Hire the best Golang Developers in Poland
Check out Golang Developers in Poland with the skills you need for your next job.
- $75 hourly
- 5.0/5
- (24 jobs)
Backend & ETL system Tech Lead dev / Architect with 6+ years experience in financial industry (Deutsche Bank) and 10 years in telecom (Swisscom). + Experience in commercial frontends projects Summary • Expert in building distributed and parallel processing systems based on highload lowlatency database systems: Kdb 3/4, ClickHouse. • OpenSource contributor to ClickHouse, Rust-lang and Coinbase exchange API • SQL development and administration of relational and object databases: Oracle, PostgreSQL, MongoDB, IBM DB/2, MySQL. • Java/J2EE/EJB/JMS/JSP (JBoss, WebLogic, Resin, Tomcat, Apache). • DevOps: Docker, OpenShift. • Frontend: Android, Vue, React/React-Native, Redux • Network: Building and administering corporate LAN and WAN networks. • Strong knowledge of Unix platforms: Linux/BSD/Solaris. • System development on C/C++/Rust. • Experience with Python analytic and ML frameworks: Keras/Numpy/Pandas and Jupyter notebooks. • Messaging systems: Kafka, NanoMSG, RabbitMQ. • Good knowledge of NMS-OSS telecom systems. • L3 support engineer and systems analyst communicating and problem solving with customers end-users. • Strong knowledge of Perl, Haskell, Ocaml, ErLang, JavaScript (+reactjs), K/Q/Kdb, J, APL2 • Source-control tools (Git, CVS, SVN, Mercury, Perforce).Golang
QPerformance OptimizationHaskellClickHouseCI/CDGitHubPerlDockerRust - $40 hourly
- 5.0/5
- (6 jobs)
𝐒𝐭𝐨𝐩 𝐬𝐭𝐫𝐮𝐠𝐠𝐥𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐡𝐞𝐚𝐝𝐚𝐜𝐡𝐞𝐬! 𝐈 𝐡𝐞𝐥𝐩 𝐁𝟐𝐁 𝐚𝐧𝐝 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐥𝐢𝐤𝐞 𝐲𝐨𝐮𝐫𝐬 𝐚𝐜𝐡𝐢𝐞𝐯𝐞 𝐬𝐮𝐜𝐜𝐞𝐬𝐬 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐬𝐞𝐚𝐦𝐥𝐞𝐬𝐬 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐞𝐱𝐞𝐜𝐮𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐫𝐨𝐛𝐮𝐬𝐭 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. Here's how you can achieve peace of mind: ➔ Effortless Development: Focus on running your business while I handle the entire development process, from ideation to launch and beyond. Take the burden off project management for efficient execution. ➔ Crystal Clear Reporting: Gain complete transparency with clear, actionable reports that keep you informed at every stage. No struggling to understand project progress or wondering about results. ➔ Long-Term Support: Your success is my priority. I provide ongoing maintenance and support to ensure your solution continues to operate flawlessly and meet your evolving needs. Cutting-Edge Tech Stack: ➤ Modern Frontends: I leverage cutting-edge frameworks like React and Vue.js to create user-friendly, performant experiences that drive engagement and conversions. Additionally, I utilize Server-Side Rendering (SSR) for optimal SEO and initial load speed. ➤ Scalable Backends: Node.js and Go power the backend of your solution, ensuring exceptional performance and flexibility to accommodate growth. ➤ AI Integration: Unlock the potential of AI through API integration, taking your platform to the next level with intelligent features and enhanced user experiences. Flexible Approach: ➤ SCRUM & LEAN Methodology: I leverage these proven frameworks to deliver projects on time and within budget, prioritizing tasks based on their impact on your business goals. ➤ Quality Assurance: You can rest assured knowing I deliver high-quality solutions with meticulous attention to detail. Main Stack: 🛠️ Frontend: React, Vue,, Svelte, Flutter 🛠️ Backend: Node.js, Go, Firebase, Supabase 🛠️ Third party tools: APIs and AI integration 𝐋𝐞𝐭'𝐬 𝐜𝐡𝐚𝐭 𝐭𝐨 𝐬𝐭𝐫𝐞𝐚𝐦𝐥𝐢𝐧𝐞 𝐲𝐨𝐮𝐫 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐚𝐧𝐝 𝐞𝐧𝐬𝐮𝐫𝐞 𝐚 𝐭𝐡𝐫𝐢𝐯𝐢𝐧𝐠 𝐁𝟐𝐁 𝐨𝐫 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦Golang
NGINXDockerWeb DevelopmentGraphQLNoSQL DatabaseSQLSaaSWeb ApplicationVue.jsReactNode.jsTypeScriptJavaScriptReact Native - $60 hourly
- 4.9/5
- (136 jobs)
Programming experience: python, golang, bash, perl Applications: shell scripting, web-applications, microservices, web-scraping, SQL based applications (SQLite, MySQL, Postgres, Oracle, MongoDB) Technologies and APIs: Flask, BeautifulSoup, Scrapy, Selenium, Tornado, Google API, Dropbox API, AWS API, HTML\CSS. My DevOps experience is related to: Ansible, Vagrant, OpenShift, Kubernetes, Docker, AWS, Packer, Terraform, Helm, Jenkins, Prometheus. I have certifications and years of experience in: - Google Cloud Certified - Professional Cloud Architect - AWS Certified SysOps Administrator – Associate - CKA: Certified Kubernetes Administrator Worked with UNIX systems for more than 13 years: Linux OS distributions (Slackware, Debian, Ubuntu, Red Hat), HP-UX, Mac OS X and Free BSD. Managed Apache, Postgres, MySQL, Postfix, Squid, BIND, Nginx, Docker and all range of system software. Have practical experience working with AWS Cloud services. Interested in data ETL, web apps, microservices and automation tools development.Golang
Bash ProgrammingAmazon PluginAutomationAnsibleGoogle Cloud PlatformKubernetesPythonTerraformDocker - $40 hourly
- 5.0/5
- (7 jobs)
Main interest => Golang (Go) development and software architecture. Other languages: Laravel(PHP) - production experience with big projects. Rust, Python, Nodejs, Java - basic level (small tools, agents, scripts, POC projects). Technical stack: Linux, Grafana, Prometheus, InfluxDB, Telegraf. GCP, Firebase, AWS, Oracle Cloud. Ebay API (desktop applications, tools etc.) Ebay to Walmart bulk upload. Freeswitch, Kurento, Cisco CUIC, UCCX. SQL (MySQL, Postgres), Elasticsearch, Redis. Messengers integrations (FB messenger, Skype, Viber, Telegram, VK). Flussonic, ONVIF, ISAPI, OPCUA. Wails desktop apps with React JS. Selenium, Selenoid, Playwright automation.Golang
RustFreeSWITCHCisco CallManagerFacebook DevelopmentPostgreSQLeBay APIPostgreSQL ProgrammingMySQLPrometheusLaravelFirebaseGrafanaData ScrapingElasticsearchSelenium - $50 hourly
- 5.0/5
- (4 jobs)
DevSecOps engineer with 15 years of experience in cybersecurity, software development and linux administration. Creative, motivated and self driven. I enjoy solving problems and coming up with ideal solutions to them. I managed to work with different technologies and languages where I always relied on performance and effectivity. My main responsibilities: Setting up a logging system Integrated automatical security testing tools for continuous vulnerability management. Hardering linux services using CIS benchmarks Security incidents handling (including malware analysis, external attacks on the infrastructure, attacks on the applications and users). Performed security testing of company's applications Develop security cli tools(please see my github profile) Support and creation of wazuh rules API security Develop rules against phishing attacks Maintaining documentation Code threat assessment Stack of technologies: Ansible, OpenStack, KVM, qemu, virtual networks Wazuh, OpenSearch, Filebeat Nftables, iptables Nmap, masscan, hping, selfdev tools Develop rules against phishing attacks Code review Stack of technologies: Ansible, OpenStack, KVM, qemu, virtual networks Wazuh, OpenSearch, Filebeat Nftables, iptables Nmap, masscan, hping, selfdev toolsGolang
Automated TestingSphinxSecurity EngineeringPerl MojoliciousLinuxDatabaseMySQLDockerMicroserviceRESTful APIKubernetesPerlPostgreSQL - $50 hourly
- 5.0/5
- (21 jobs)
I'm Martin – a full-stack developer and DevOps engineer with 5 years of industry experience. I discovered coding and software systems design at the age of 17, and it's been my passion ever since. I'm dedicated to continuously improving my skills and delivering work that is both effective and impactful. My career has primarily focused on web development, where I've gained expertise in front-end technologies such as React, Next.js, and Tailwind CSS – my personal favorites. I also have significant experience with React Native and am the creator, product owner, and sole developer of the Pray4UA app. On the backend, I specialize in building scalable, production-ready web applications. I have extensive experience with Node.js and Golang, as well as some familiarity with Python web frameworks. In addition to mastering specific technologies, I pride myself on creating well-structured REST APIs and designing systems that are scalable, well-tested, user-friendly, easy to manage, and future-proof. I enjoy working with relational databases. I'm able to write complex and efficient SQL queries when needed. I also have some experience with database administration. My primary expertise is with PostgreSQL, where I have extensive hands-on experience and a clear preference for using it in my projects. As an experienced DevOps engineer, I've worked extensively with AWS and GCP, as well as exploring other cloud providers. My DevOps expertise includes managing public cloud workloads, writing and optimizing automation scripts, implementing Infrastructure as Code solutions, using Ansible for configuration management, and containerizing workflows with Docker. Some of my notable achievements include: - Designed and implemented a multi-regional A/B testing system from the ground up, currently serving millions of users with a 95th percentile latency of less than 200ms. - Building automation management dashboards from the ground up for multiple companies. - Creating the platform for the Christians for Ukraine initiative, which includes a custom CMS, an integrated website, a reporting and statistics system for literature orders, an administration dashboard, and numerous other features. - Developed the Pray4UA mobile app, including the entire backend, using Supabase and React Native. More details about these projects can be shared during our interview. Beyond my technical expertise, I value honesty and openness in all my professional relationships. When I was freelancing, I occasionally encountered dishonest clients who tried to exploit my work without paying. However, ALL of my clients can attest to my honesty, diligence, and the high quality of my results.Golang
Front-End DevelopmentNext.jsReactGraphQLDevOpsTypeScriptSoftware Architecture & DesignDatabase ArchitectureRESTful APIPostgreSQLDeployment AutomationDockerPythonGoogle Cloud Platform - $38 hourly
- 5.0/5
- (1 job)
I am a full-stack Software Engineer with years of experience. Throughout my career I worked with many technologies and programming languages. I value clear communication within the team which I believe is essential to deliver results quickly. I enjoy building scalable and architecturally sound systems. The world of engineering is ever growing and continuous learning and experimentation is a part of it I enjoy.Golang
GraphQLCI/CDReact NativeTypeScriptDockerJavaScriptHTMLElmGitCSSAmazon Web Services - $32 hourly
- 5.0/5
- (12 jobs)
Tehnically skilled and System Engineer / DevOps with 8 years of experience. Main focuses are the maintenance of highly loaded systems, development and maintenance of CI-CD pipelines, AWS cloud based solutions, cyber security. Proficient with developing automation scripts (Bash, Python, Golang) and automation tools for Infrastracure as a Code (terraform), Configuration as a Code (ansible). Advanced skills of deployment CI-CD pipelines within Github Actions and Jenkins. Excelent troubleshooting skills, large experience in deployment and configuring of monitoring and logging systems (Zabbix, ELK) including security events monitoring (Rapid7 IDR). Created visualization dashboards, configured alerts. Experience in development services solutions within a large telecom operator (near 5 millions subscribers). Experience in security architecture development for one of the major lottery development company.Golang
DockerLinuxJenkinsGitELK StackZabbixDevOpsHashiCorp VaultTerraformGrafanaCI/CDCybersecurity MonitoringKubernetes - $40 hourly
- 5.0/5
- (1 job)
I'm a result-oriented software engineer with 7+ years experience in the industry with a focus on backend development and cloud technologies. I can help you with building a system of any complexity starting from idea to fully implemented and maintained app working in production. My responsibilities include progamming, estimations, requirements clarification, setting up features delivery and other things which are required to create web, mobile and cloud applications My expirience includes using: - Cloud providers - AWS, Google Cloud, Digital Ocean and Cloudflare - DevOps technologies - Docker, Kubernetes and Terraform - Kafka and ksqlDB as data broker and stream data tool - SQL and NoSQL databases - MongoDB, PostgreSQL and Redis - Web technologies - React, Next.js, JavaScript, TypeScipt, HTML, CSS and websockets - React Native to create cross-platform mobile applications I'm opened to full or part time jobs as well as fixed budget projectsGolang
Next.jsKubernetesPostgreSQLDockerTypeScriptTerraformMongoDBReact NativeReactHTMLApache KafkaCSSJavaScriptNode.js - $45 hourly
- 5.0/5
- (1 job)
👋 Hello I am an experienced programmer in technologies of JavaScript, Ruby, PHP/Laravel, Java, No code and Blockchain. I mainly use JavaScript and its technologies such as React, Vue.js, Angular, Node.js, Java SpringBoot, and PHP and Laravel, Ruby on Rails, MongoDB and MySQL to build web applications. I also utilize my Webflow and Bubble.io skills to convert figma designs to beautiful and responsive websites. I am looking forward to working with a talented team and trending to high-tech and long-partnership. I am exploring relevant techs to execute and build Smart Contracts and DApps on diverse networks. My main skill sets are as below: ➡️ JavaScript/TypeScript, React, Next.js, Node.js, Angular, Vue, Svelte, PHP/Laravel ➡️ Java SpringBoot ➡️ Ruby on Rails ➡️ MongoDB, MySQL, AWS, Firebase, Docker, CI/CD ➡️ Highcharts, D3.js, FlowChart, Chart.js, three.js ➡️ Solidity, Ethereum, Cryptocurrency, NFT, EVMs, Web3, Ethers ➡️ CMS • WordPress • Elementor • Divi ➡️ No Code • Webflow • Bubble.io ➡️ Solana, Rust, Solana Web3, Solana Wallets 💥 I will a build successful work history here by working hard and honestly with Excellent Clients, just you!!!Golang
BlockchainLaravelWebflowBubble.ioWordPressNode.jsSvelteAngularVue.jsNext.jsReactPythonTypeScriptJavaScript - $60 hourly
- 5.0/5
- (1 job)
Experienced Senior DevOps, DevSecOps, and Infrastructure Architect with a proven track record in leading and managing cloud migrations, infrastructure automation, and DevOps transformations. Expertise in AWS, Docker, Kubernetes, CI/CD pipelines, and security compliance standards such as PCI/PA DSS and ISO 27000. Adept at optimizing systems for performance, scalability, and reliability. Passionate about leveraging cutting-edge technologies to deliver robust and efficient solutions.Golang
PCI DSSEnterprise ArchitectureAzure DevOpsAmazonSoftware ArchitectureCybersecurity ManagementMachine LearningArtificial IntelligenceDevOpsCloud MigrationCI/CDPythonKubernetesMicrosoft Azure - $40 hourly
- 5.0/5
- (5 jobs)
Hello! 👋 I’m a Full Stack, Blockchain, and AI Developer with a passion for building cutting-edge solutions. Here’s a quick look at what I do best: 💻 Full Stack Development: - Frontend: Proficient in React, Next.js and Vue.js, delivering responsive, user-friendly interfaces. - Backend: Skilled in Node.js, Python, Golang and Java for scalable, secure applications. - Databases: Expertise in PostgreSQL, MySQL, and MongoDB for efficient data handling. 🔗 Blockchain Development: - Smart Contracts: Experienced with Solidity and Rust on Ethereum and Solana. - NFTs & DeFi: Building NFT marketplaces and decentralized apps (dApps), with expertise in ERC-20 tokens. - Bitcoin Development: Skilled in working with BRC-20 tokens and integrating them into various blockchain solutions. 🤖 AI Development: - Generative AI: Creating innovative models for text, image, and data generation. - Machine Learning: Implementing ML models using TensorFlow and PyTorch. - NLP: Expertise in building chatbots and AI-driven solutions. 💼 Soft Skills: - Strong communicator and collaborator. - Problem solver with a focus on efficient solutions. - Detail-oriented and committed to delivering high-quality results. Let’s build something amazing together! 🚀Golang
Amazon Web ServicesApache KafkaSmart ContractNext.jsSolidityNode.jsReactEcommerceWeb ApplicationWeb DevelopmentNFTC++RustPHP - $35 hourly
- 4.6/5
- (2 jobs)
As a Senior Full-Stack Developer with 7 years of experience, I specialize in building scalable, high-performance web applications with a focus on AI integration. Proficient in Python, Golang, React, and Next.js, I develop intelligent systems leveraging machine learning frameworks like TensorFlow and PyTorch. My expertise spans both back-end (Django, Flask, Gin) and front-end development, creating dynamic, AI-driven user experiences. With hands-on experience in cloud platforms such as AWS, I design efficient, secure, and maintainable solutions. Let’s collaborate to bring your AI-powered project to life!Golang
JestSeleniumGitHubDockerGoogle Cloud PlatformAWS LambdaNext.jsReactPyTorchTensorFlowFastAPIFlaskDjangoPython - $40 hourly
- 5.0/5
- (72 jobs)
Hello, I’m Jerzy, a Senior Full-Stack Developer with 18 years of experience in backend and web development. My expertise goes beyond technical delivery—I deeply understand the business challenges behind each project, ensuring I bridge the gap between technical requirements and business needs to create impactful solutions. Here’s how I can help: I offer expertise in architecture, development, and maintenance of high-quality software and web applications. Whether you need to build from scratch or enhance an existing system, I can provide the technical leadership and hands-on development skills necessary to drive your project forward. My Technology Stack: Backend: ✅ PHP | Symfony | Laravel ✅ Python | Django ✅ Golang ✅ Ruby | Ruby on Rails ✅ Node ✅ MySQL, MongoDB, OrientDB Frontend: ✅ JavaScript | React | Vue | Angular E-commerce solutions: ✅ Magento | Shopify Leadership Experience: As CTO at Polcode, I’ve successfully led teams of developers, guiding projects from inception through to deployment and beyond. My leadership is rooted in a strong technical foundation and a keen understanding of product strategy. I can help assemble and manage a team tailored to your specific needs, ensuring tasks are prioritized and the project is steered in the right direction. Key Areas of Expertise: ✅ Web Development: Hire mid-level or senior developers with a specific tech stack through Polcode. Reduce recruitment cost and effort and let them connect you with experienced front-end, back-end, and full-stack engineers ✅ E-Commerce Development: Work with developers from a Bronze Adobe Solutions Partner. Polcode collaborates with certified Magento developers who are ready to take on your project. Improve performance, migrate to modern versions of e-commerce platforms, create custom ones from scratch or boost it with AI. ✅ Other - Software Development: Polcode’s developers can build a custom CMS, ERP or other system for companies that have higher expectations and don’t want to use existing SaaS solutions. We’ll connect you with team members who will guide you through the entire process, ensuring your business grows. ✅ Product Management: Boost your project with an experienced IT expert skilled in management, processes, and operations. Choose from a range of roles: Project Managers, DevOps, UX/UI Designers, or Quality Assurance Specialists. Polcode’s experts are ready to take on your tasks. I am eager to discuss your project and how I can contribute to solving your development challenges. Let’s work together to deliver technical excellence and create solutions that are a perfect fit for your business needs. Looking forward to your inquiry!Golang
UX & UI DesignQuality AssuranceMagentoDjangoPythonRuby on RailsVue.jsReactJavaScriptLaravelSymfonyPHP - $65 hourly
- 5.0/5
- (34 jobs)
Welcome to my profile! I’m an AI development expert with more than 10 years of experience in the IT overall. Started as a PHP engineer and back-end architect, and now I am keen on cutting-edge technologies and helping businesses achieve their objectives. But, as a technical expert, I also embed my unique approach to working with clients: - Solid requirements analysis and elicitation - Offering at least a couple of project scope realization options - Preparing a Technical Vision outlining a possible technical strategy Recently I’ve been involved in a bunch of AI researches and projects as a part of my core expertise to stay in touch with new technological insights and keep my professional expertise up to the industry's best practices. Besides these, here is a list of bells and whistles I can also provide: Expertise: - Data Science - Machine Learning - Artificial Intelligence - Computer Vision - NLP - OCR - CNN - Deep Learning - Neural Networks - Biometric Authentication Project types: - Chatbots - Assistants - AI-powered software - Tracking systems - Forecasting software - Recognition solutions Technologies: - PHP stack - Python - PyTorch - SQL - Airflow - Scikit-learn - Pandas - Docker - AWS - Microsoft Azure - Cloud Environments Domains: - Finances - Internet of Things - HoReCa - Retail - Healthcare - Fitness, Wellness, and Lifestyle - Social Media - Education - eCommerce - Transport & Logistics - Marketing & Advertising - Manufacturing - Heavy Machinery I’m open to both consultancy and development opportunities. Feel free to get in touch with me and my team if you want to discuss an AI concept, I am sure I will have valuable and interesting ideas to share with you!Golang
Computer VisionData ScienceMachine LearningArtificial IntelligenceChatbotChatGPTOpenAI EmbeddingsHIPAAWeb DevelopmentElectronic Medical RecordHealthcare ITAPI DevelopmentPHPMySQL - $125 hourly
- 5.0/5
- (20 jobs)
Software engineer with 10+ years of experience in development and devOps. Recent projects: * Fintech project (golang) * Custom connectors for Zapier, Workato, Terraform, Crossplane, Pulumi * Datasets management platform for Computer Vision projects (python) * IoT platform (golang) Skills: golang, python, devops, custom integrationsGolang
DockerRESTful APIDevOpsTerraformApplication Release AutomationGitAPIPythonScriptingZapierAPI IntegrationAutomation - $35 hourly
- 5.0/5
- (6 jobs)
If we work, you can count on me. I: - ensure clear communication; - pay attention to details; - strive to deliver in the shortest timeframe. Top technologies I like and use often: Frontend - Redux, RTK, SWR, Apollo GraphQL Client - Next.js (App & Pages), CRA, React Router - CSS Modules, Tailwind CSS & UI, Headless UI - Storybook, Testing Library, Jest, MSW - PNPM, Yarn & Workspaces, Lerna, Nrwl Nx Backend: Node.js - NestJS (RESTful & GraphQL APIs) - TypeORM, Prisma - Apollo GraphQL Server Backend: Go (Golang) - PGX, GORM, GoRedis - Gorilla, Gin - Protocol Buffers (Protobuf), gRPC - Temporal Platform & Go SDK DevOps: Automation tools - Docker & Compose - GitHub Actions DevOps: Infrastructure - DBs: Redis, Postgres, Mongo, Neo4j - PaaS: DO, AWS, Heroku, GCP, Vercel, AppflowGolang
DevOpsTypeScriptJavaScript - $65 hourly
- 5.0/5
- (5 jobs)
Entrepreneur in the Software Engineering industry. Working with business clients as a CTO, Senior Software Developer, Lead Software Developer, Software Architect and a freelancer. Specialized in solving difficult, unusual and customized solutions, implementing modern technologies for clients all around the world. I have mastered Golang, which was my first choice programming language over 6 years of professional career. However, depending on the business requirements, I was also developing using different programming languages like Java, Python, C++ or PHP. • Design, Architecture and Implementation of highly-available distributed systems composed in a Git mono-repository, multiple Golang microservices, communicating via gRPC, Event-Bus and RESTful APIs, with infrastructure on AWS, DigitalOcean and GCP cloud providers • Implementation of Docker images for custom services based on: Golang, Node.js, React+Next.js, PostgreSQL, MySQL, PHP. • Design and implementation of SQL and NoSQL databases • Event-driven Architectures based on different kind of Event Buses, like: NAST, Google PubSub, Kafka, Mosquitto, RabbitMQ • Design and implementation of a Kubernetes Cluster with Helm Charts per service. • Implementation of Authorization and Authentication services with OAuth2, JWT tokens, Argon2 passwords • Implementation of a custom Golang-based database service, based on different database engines like: LevelDB, RocksDB, Pebble and finally on BadgerDB • Design and implementation of complex Github, Gitlab, BitBucket and Travis based CI/CD, that test, build Docker images and deploy to Kubernetes or service running on Docker Compose or Docker Swarm. • Implementation of complex Scripts on Unix-like platforms • Implementation of Golang based CLI • Implementation and contribution to many open-source libraries like: - github.com/unidoc/unipdf - github.com/unidoc/unihtml - github.com/google/go-cloud - github.com/blockysource • Implementation of a Golang JBIG2 PDF encoder and decoder • Migration of a medium-sized PHP-based service to micro-service environment • Implementation of highly-available Golang based backend service, that prepares, processes and clear Geographical Meshes • Implementation of a Construction Industry - Elevation Calculator, based on Golang service, that stored, computed and exports a PDF drawing with price estimationGolang
Apache KafkaUnixMongoDBEventBusDomain-Driven DesignEvent Sourcing FrameworkDigitalOceanComputer NetworkGitClean ArchitectureLinuxPostgreSQLMicroserviceKubernetesDockerPythonC++ - $40 hourly
- 4.9/5
- (67 jobs)
I have been working as web developer for over 12 years I have learned all Ecommerce ins and outs and I am happy to implement my skills and knowledge to develop and support eCommerce stores, sites. Custom web development is a challenge for me. How can I improve your business: - Ecommerce website development from scratch; - Magento integration with payment, shipping, accounting and marketing systems; - Magento, Prestashop, Drupal theme and extension development. I do not just create websites based on a certain platform. I deliver eCommerce development solutions. - Why hire me as Magento, Prestashop, Drupal developer - Ready to answer all your questions via email 24/7 - Always listen to the client and ready to implement tasks I will be the best asset to your project. My previous experience in web development - Custom Magento development for famous food UK brand - Migration to Mageno from other cms for modern Shoes website - Bug fixing and consulting for online food retailer in the United Kingdom - Payment processor integration in eCommerce for Girard Sudron, France - Security Patches installation for all projects My main skills: - Frameworks: Laravel, Symfony, Zend, Yii2 - CMS: Magento 1/2, PrestaShop, Drupal etc - PHP 7 - MySQL (MariaDB, Percona) - NoSQL: MemcacheDB, Redis, MongoDB - GIT workflow - JS, HTML, CSS skills - Ready to work with Linux (apache/nginx, PHP, MySQL, Memcached, Redis, Varnish) - Know how to work with Redux, React, Vue etc. - PSD/Sketch to html/css. - Project management systems: Jira, Redmine or any other according to your requirements I do not believe in luck, I believe in hard work. Ready to improve your web business? Feel free to contact me.Golang
KlaviyoGoogle Tag ManagerRESTful APIMicroserviceTypeScriptEcommerce Website DevelopmentYii2DrupalAPI IntegrationMagentoPrestaShopReactPHP - $20 hourly
- 5.0/5
- (1 job)
Hi! - I work with PHP, Go, JavaScript, Vue.js, Flutter&Dart, MySQL, Postgres, RabbitMQ, Redis, Apache Kafka, C#, Docker. - Writing websites, SPA, API services/microservices, admin panel, CMS. - Laravel Framework (PHP), Symfony, Zend Framework, Gin (Go), WebSocket. - Configuration of Linux, Docker, RabbitMQ, git servers. - Development of programming solutions (PHP + MySQL/Postgres + Vue.js, Go + Postgres + WebSocket). - Writing programs for personal computers (PC) using C#. - Updating existing solutions, making corrections, code refactoring. - Integration with the API of MBank, Santander, BNPParibas, DotPay, PayPal, Blue Media, DiPocket, PaySafeCash, DPay, Paymenterio banks. - API integration of various loan/credit services. - Database optimization and normalization. - Applying SOLID design patterns and principles, writing tests (unit, modular and integration). - Integration with Google API, AWS, Firebase, Apple, Facebook. Cześć! - Pracuję z PHP, Go, JavaScript, Vue.js, Flutter&Dart, MySQL, Postgres, RabbitMQ, Redis, Apache Kafka, C#, Docker. - Pisanie stron, serwisów/mikroserwisów, API, panelej admina, CMS. - Laravel Framework (PHP), Symfony, Zend Framework, Gin (Go), WebSocket. - Konfiguracja serwerów Linux, Docker, RabbitMQ, git. - Opracowanie rozwiązań programistycznych (PHP + MySQL/Postgres + Vue.js, Go + Postgres + WebSocket). - Pisanie programów dla komputerów osob istych (PC) na C#. - Aktualizacja istniejących rozwiązań, wykonanie poprawek, refaktoryzacja kodu. - Integracja z API banków MBank, Santander, BNPParibas, DotPay, PayPal, Blue Media, DiPocket, PaySafeCash, DPay, Paymenterio. - Integracja z API różnych usług pożyczkowych/kredytowych. - Optymalizacja i normalizacja baz danych. - Stosowanie wzorców projektowych i zasad SOLID, pisanie testów (jednostkowych, modułowych i integracyjnych). - Integracja z API Google, AWS, Firebase, Apple, Facebook.Golang
PostgreSQL ProgrammingLaravelFlutterMySQL ProgrammingVue.jsDartHTML5C#JavaScriptPHP - $40 hourly
- 5.0/5
- (4 jobs)
I have been a professional full-stack developer since 2013. During this time, I have architected and coded complex software systems, including CMS systems, Data Ingestion Modules, and Data Visualization portals. I stay up to date on the latest practices in frontend responsiveness and performance optimization. I have experience with various technologies such as Python, Django, and ReactJS, which have proven to be critical complementary tools to my main skill set. Apart from high-quality code, what matters to me personally is keeping an open mind and implementing a creative approach to assigned tasks. Whenever it is called for, I roll up my sleeves and attempt to square the circle. My can-do attitude and eagerness to constantly develop, help me to dream big and achieve my goals. I work well in teams and autonomously and place a great emphasis on skillful communication. On top of this, I easily adapt to my Customers’ business goals to support them on their path to success! My technology stack: Backend: Django, Django REST Framework, Python, Go, Node.js, Express Frontend: React.js, Typescript, Tailwind, NextJS, Vue.js, Vuex.js Databases: PostgreSQL Other: Docker, Pytest, Google API, ElasticSearch My technical expertise covers also: Code quality: Acceptance Tests, Unit testing with PHPUnit, PSR Standards, Design Patterns Version Control System: Git (Github, GitLab, Bitbucket) Issue Trackers: JIRA, Redmine, Trello My recent projects: impak Ratings - In this project, I served as a full-stack developer with a primary focus on Python. I was responsible for retrieving, processing, validating, and saving data from Google spreadsheets to the database, ensuring the data's integrity and consistency across the spreadsheets, backend, and frontend. I worked on performance optimization, displaying data in another service created in React, and generating PDF reports from the application's views. Additionally, I developed a Google Spreadsheet plugin using Apps Script to check spelling directly within the spreadsheet. Technologies used: Python, Django, Django REST Framework, Golang (Echo framework), Mongodb, Node.js, TypeScript, React.js, Redux/RTP Query, Express.js, Puppeteer.js, ElasticSearch, Redis, Tailwind CSS, Survicate app - I was a member of a JavaScript development team that was responsible for creating one of most advanced app for collecting user feedback on multiple platforms (Web, Mobile, Email). The team delivered a thoroughly-tested and very secure platform that gained trust of hundreds companies from all over the world. My main duties concerned assistance with upgrading analytics bars and integrations panels. Technologies used: HTML, CSS, JavaScript, AngularJs, Vue.js, Vuex, Mocha.js, Vue Test Utils iParts e-commerce - a long-term project that aimed at finetuning and optimizing one of the largest online stores in Poland, with thousands products on stock and related specialized car parts sites. I worked in a 10-person dev team that closely cooperated with marketing specialists. I served the role of full stack developer, and I was tasked with helping to maintain and add advanced UX web components such as: - AJAX system allowing for adding items to the basket - Notification system, when too many items were added to the basket - Front page car find bar, with AJAX request and save car option for easier part selection in the future - Multi-option advanced tyre filter page, with selected filter bar display and caching system Technologies used: PHP, Lumen, HTML 5, CSS3, JavaScript, jQuery, Vue.js, Vuex.js, Node,js, Webpack, MySQL, PostreSQL, PHPUnit, TestCafe, ElasticSearch, Redis I work with Polcode Software House - one of the top-rated agencies on Upwork, located in Poland (EU). We have achieved an impressive 99 % Job Success rate with over 1 mln hours logged. We are a team of about 150 people (developers, delivery managers, project managers, and graphic designers) whose daily job is problem-solving. We never leave a customer with an unfinished project - working in a team we can guarantee the project's full continuity, no matter the circumstances. We are here to help you have your work done and finished. Looking forward to our cooperation! Best regards, AndrzejGolang
Web DevelopmentPostgreSQL ProgrammingAgile Project ManagementLumen Micro FrameworkEnglishWeb ApplicationAgile Software DevelopmentDockerElasticsearchExpressJSData VisualizationGoogle APIsNode.jsReactDjangoPostgreSQLTypeScriptPython - $75 hourly
- 0.0/5
- (0 jobs)
Systems Design. Technical documentations. Hands-on development. Golang since 2016 // Python since 2015 // Java & OOP since 2013. Passionate Gopher. Hands-on Cisco networking solutions since 2012.Golang
NoSQL DatabaseTechnical SupportDockerCloud ComputingLinux System AdministrationDistributed ComputingSoftware DevelopmentSocket ProgrammingTraining & DevelopmentNetwork AdministrationSQLMongoDBPython - $60 hourly
- 0.0/5
- (0 jobs)
High performing developer with about 8 years of overall experience in backend and web development. Experience in Go over 3 yearsGolang
Unit TestingElasticsearchApache KafkaRabbitMQRESTful APIMicroserviceGraphQLPostgreSQLMySQL - $50 hourly
- 0.0/5
- (0 jobs)
I am a well-rounded full-stack developer passionate about developing quality software. I focus on building products and my diverse skill set allows me to tackle any challenge. My preferred front-end technology is React, while on the blockchain I have solid skills in Web3, Smart Contracts.Golang
Node.jsReactSolanaBlockchain DevelopmentRustC# - $120 hourly
- 0.0/5
- (0 jobs)
I’m a developer with experience in building websites for small and medium sized businesses. Whether you’re trying to win work, list your services or even create a whole online store – I can help!Golang
ReactNode.jsBlockchain DevelopmentAngularNext.jsRustC++TypeScriptPython - $80 hourly
- 0.0/5
- (0 jobs)
Blockchain Core & Fullstack Engineer PROFESSIONAL SUMMARY Proactive and creative blockchain developer with 6 years of experience of expertise in DEFI, DEX, Smart Contract, Blockchain Core Logic, Cosmos SDK, Tendermint Core, Substrate & Polkadot. I like to study and create new technology and develop secure applications. Well-versed in creating test cases, as well as covering all test conditions and eliminating redundancy and duplications. Additionally successfully identified and resolved a process bottleneck that reduced coding efficiency by up to 30%., CORE STRENGTHS - Rust - Golang - Solidity - Wasm - Python - Typescript - Web3.js - Smart Contract - React.js - Next.js - Node.js - PHP - Ethereum - Solana - Avalanche - Terra - Cosmos - Near - Wax - Blockchain Core Logic - Blockchain Security Logic - Blockchain Backend - Cosmos SDK & Cosmos Hub - Substrate & Polkadot - PM - CTOGolang
Cosmos OSPolkadotweb3.jsFront-End DevelopmentBlockchain ArchitectureEthereumSolidityBlockchainSmart ContractReactRustTypeScriptC++ - $120 hourly
- 0.0/5
- (0 jobs)
Proactive and creative blockchain developer with 6 years of experience of expertise in DEFI, DEX, Smart Contract, Blockchain Core Logic, Cosmos SDK, Tendermint Core, Substrate & Polkadot. I like to study and create new technology and develop secure applications. Well-versed in creating test cases, as well as covering all test conditions and eliminating redundancy and duplications. Additionally successfully identified and resolved a process bottleneck that reduced coding efficiency by up to 30%., CORE STRENGTHS - Rust - Golang - Solidity - Wasm - Python - Typescript - Web3.js - Smart Contract - React.js - Next.js - Node.js - PHP - Ethereum - Solana - Avalanche - Terra - Cosmos - Near - Wax - Blockchain Core Logic - Blockchain Security Logic - Blockchain Backend - Cosmos SDK & Cosmos Hub - Substrate & Polkadot - PM - CTOGolang
Blockchain ArchitectureEthereumComputer ScienceReactSmart ContractSecurity AnalysisPolkadotFront-End Developmentweb3.jsRustC++TypeScript Want to browse more freelancers?
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