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Hire the best Apache Kafka Developers in Poland

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  • $55 hourly
    • 5.0/5
    • (16 jobs)
    Over 22 years of experience working on enterprise class systems. Variety of projects and customers. Always focused on performance and reliability. Always on cutting edge of technology. Keeping in mind business objectives and customers interests. Competencies: • Solution Selection, Architecture Design, Implementation, Customization, Migration, Internal Adoption - Freelance Consulting & Audit BigData & Machine Learning Expertise: • Machine Learning Models adoption from business use-case until production maintenance • Data Collection, Data pipelines, Data Workflows • Big Data ETL & Mining • System Integration I have a solid portfolio of enterprise level, successfully implemented solutions as well as ad-hoc optimizations of existing systems in large, global organizations.
    Featured Skill Apache Kafka
    Kubernetes
    BigQuery
    SQL Programming
    Big Data
    Docker
    NoSQL Database
    Machine Learning
    Scala
    Python
    Apache Spark
  • $100 hourly
    • 5.0/5
    • (45 jobs)
    I have over 4 years of experience in Data Engineering (especially using Spark and pySpark to gain value from massive amounts of data). I worked with analysts and data scientists by conducting workshops on working in Hadoop/Spark and resolving their issues with big data ecosystem. I also have experience on Hadoop maintenace and building ETL, especially between Hadoop and Kafka. You can find my profile on stackoverflow (link in Portfolio section) - I help mostly in spark and pyspark tagged questions.
    Featured Skill Apache Kafka
    MongoDB
    Data Warehousing
    Data Scraping
    ETL
    Data Visualization
    PySpark
    Python
    Data Migration
    Apache Airflow
    Apache Spark
    Apache Hadoop
  • $45 hourly
    • 5.0/5
    • (1 job)
    Hey, Upwork community! If you want a reliable co-founder & a dedicated team to bring your startup to life, contact me! We help ideas become real products while providing everything you need to create a startup at any stage of product development: idea, pre-seed, or seed.  Get your ready-to-market product in several months! We help with idea validation, product design, MVP development, user acquisition, go-to-market strategy, and even support in fundraising! Let’s work together! I'll help your startup thrive🚀
    Featured Skill Apache Kafka
    React Native
    Product Roadmap
    Startup Consulting
    Product Design
    Financial Model
    Product Development
    Product Discovery
    Product Strategy
    Product Architecture
    Pitch Deck
    Product Marketing
    Product Launch
    Product Review
    Product Concept
    Node.js
  • $45 hourly
    • 4.9/5
    • (11 jobs)
    Hello👋 Are you looking for experienced and certified Java engineers to boost your project? You are on the right page! Clear Solutions team provides Java engineers and grows their skills for you. We have more than 12 years of experience in IT and 8+ in Java. My team and I are happy to provide: 🚀 Java developers with transparent knowledge for transparent rates 🚀 People development services: technical assessments, mentoring, evaluation etc. Based on more than 500 interviews and technical assessments we made in the industry so far we created our own evaluation scale. Therefore you always know what set of knowledge you pay for each grade. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow ✅ I have an experience in the following: 👉 migration from on prem to AWS 👉 building microservce architecture from scratch 👉 delivering robust and high-quality code with unit tests 👉 building java high-load and distributed applications 👉 migration from monolith to microservices 👉 building the right engineering culture inside the company 👉 mentoring technical leaders Tech Stack: 🔹 Languages: Java 8, Java 16, Groovy. Spring boot, RESTful API, DB design, 🔸 Frameworks: Spring, Spring Boot, Hibernate, Spring Data 🔹 Clouds: AWS 🔸 SQL: PostgreSQL, MariaDB, Oracle 🔹 NoSQL: Elasticsearch, Redis, MongoDB, Cassandra, DynamoDB 🔸 Message brockers: Apache Kafka or RabbitMQ 🔹 Testing: Junit5, Testcontainers, Spock, RestAssured We have expertise in the following fields: ✅ FinTech, ✅ Trading, ✅ Cryptocurrency, ✅ Banking, ✅ Data processing, ✅ Healthcare, ✅ Social Networking and more. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow As a Backend Developer, I specialize in building robust Java Applications using Core Java, Spring Framework, and Spring Boot 3, leveraging tools like Maven, Gradle, and Bazel for efficient builds, and integrating Hibernate, JPA, and Apache POI for database and document handling. I have extensive experience with RESTful Architecture and SOAP for designing APIs, ensuring Application Security, and implementing testing frameworks like JUnit, JUnit5, Mochito, and AssertJ. I work across diverse environments, including Docker, AWS, Amazon Elastic Beanstalk, AWS Lambda, Google Cloud, and Azure (Azure Cosmos DB), utilizing databases like PostgreSQL, MySQL, MongoDB, Oracle Database, Microsoft SQL Server, IBM Db2, and RabbitMQ. On the frontend, I use HTML, CSS, JavaScript, TypeScript, Angular, AngularJS, and React, collaborating seamlessly using tools like Jira. For messaging and event-driven architecture, I rely on Apache Kafka, Apache ActiveMQ, and RabbitMQ, and for advanced testing, I employ Testcontainers. With a focus on Software Architecture & Design, I also develop Standalone Applications, Desktop Applications, and Web Services, ensuring scalable, secure solutions for enterprise systems and Microservices Architecture.
    Featured Skill Apache Kafka
    Amazon Web Services
    MySQL
    MongoDB
    Spring Boot
    Kubernetes
    RabbitMQ
    RESTful API
    Elasticsearch
    Docker
    Hibernate
    Spring Framework
    Java
    SQL
  • $55 hourly
    • 5.0/5
    • (3 jobs)
    I'm a Senior Software Engineer with over 9 years of experience, I have gained extensive expertise in designing and implementing high-quality software solutions that meet the client's business requirements. Throughout my career I was working on multiple projects, here I'm sharing three of the most challenging ones: At UBS (a Swiss bank with a $60bln capitalization), I was a Senior Java Developer, and I was responsible for developing a regulatory reporting engine to handle dozens of millions of transactions the bank processes daily. This project was part of implementing their new business requirements around designing a project on an entirely new event-driven technological stack. There were several main challenges that I faced when designing and implementing the system: 1. System should handle millions of transactions per day that have to be reported in a timely manner. 2. System should be tolerant to hardware failures, including the loss of the entire data center. 3. Around 40 developers should be able to work on the project productively with minimal conflicts. 4. Correctness of reporting is essential – every introduced bug can have disastrous consequences – the system should have checks in place that prevent buggy code from being deployed to production. 5. Transaction reporting domain is very complicated, and business requirements are frequently changing. System design should be flexible enough to adjust to the required changes. 6. There are multiple stakeholders involved; each has different requirements for the system. At Denario, a fintech startup, I worked as a Senior Java Developer, assuming full responsibility for designing, developing, deploying, and maintaining the application and DevOps tasks. The main challenges in the projects were: 1. Developing a high-performance system 2. Integrating with multiple Open Banking providers 3. Ensuring the platform was scalable, fault-tolerant, and highly available 4. Ensuring the platform was secure and user data was protected 5. Collaborating with the product team to design features that met users' needs 6. Maintaining the platform and fixing issues that arose in production 7. Assuming full responsibility for the end-to-end software development process At the Ministry of National Defense of Poland, I was a Team Leader and Technical Leader responsible for providing e-learning solutions for hundreds of thousands of users. My role involved leading a team of developers, analysts, and testers to develop and maintain a learning management system. I have experience working with a variety of technologies, including: Java, Spring Framework, Spring Boot, Hibernate, JUnit, Spock, Apache Flink, Kafka, PostgreSQL DB, Oracle SQL DB, Elasticsearch, Microsoft Azure, Kubernetes, AWS I am passionate about software development and strive to stay up-to-date with the latest trends and technologies. I am dedicated to delivering high-quality solutions and exceeding client expectations.
    Featured Skill Apache Kafka
    API
    Spock
    Java
    Spring Framework
    JUnit
    Unit Testing
    Linux
    SQL
    Bash Programming
    Spring Boot
    Linux System Administration
    Bash
  • $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 projects
    Featured Skill Apache Kafka
    Next.js
    Golang
    Kubernetes
    PostgreSQL
    Docker
    TypeScript
    Terraform
    MongoDB
    React Native
    React
    HTML
    CSS
    JavaScript
    Node.js
  • $40 hourly
    • 5.0/5
    • (5 jobs)
    I have many years of experience in web applications development. Development stack: Java, JavaScript, TypeScript, SQL Experienced in java backend, frontend, web development, layout, dashboards, charts, maps, REST, forms, user management systems, complex data visualization, database, state management and much more. I took part in different projects for finance and analytics sector with full development cycle - customer specific portals for managing business processes, data visualization tools for risk analysis, complex user and content management systems. My primary skills: - Java, JavaScript, Typescript - Spring, Guice, Hibernate, Google Web Toolkit - Angular, RxJs, NgRx, D3.js, jQuery - HTML, CSS, SVG - SQL It is important for me to build long-term relationships with clients. I am ready to discuss requirements and communicate with your team.
    Featured Skill Apache Kafka
    Couchbase Server
    Azure DevOps
    Docker
    Kubernetes
    HTML
    Angular
    Hibernate
    JavaScript
    TypeScript
    CSS
    D3.js
    Java
    Spring Framework
    SQL
  • $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 estimation
    Featured Skill Apache Kafka
    Unix
    MongoDB
    EventBus
    Domain-Driven Design
    Event Sourcing Framework
    DigitalOcean
    Computer Network
    Git
    Clean Architecture
    Linux
    PostgreSQL
    Microservice
    Kubernetes
    Docker
    Golang
    Python
    C++
  • $150 hourly
    • 5.0/5
    • (33 jobs)
    🥇Expert-vetted (top 1%) Upwork freelancer. 💡Top AI voice in LI. 👔 10+ years of experience on executive tech positions. ⭐️⭐️⭐️⭐️⭐️ "Ivan seamlessly navigated the complexities of the non-deterministic nature of OpenAI/LLMs. Highly recommend! Ivan - Exceptional work on our POC. Thank you." ⭐️⭐️⭐️⭐️⭐️ "Amazing to work with. Went above and beyond expectations." ⭐️⭐️⭐️⭐️⭐️ "Ivan understands AI and LLMs really well, he’s a great communicator and transparent about his methods and efforts." ----------------------- Hello! I'm all about technology and the magic it brings to our lives. . There's something truly special about building things from scratch and watching them take off. With a solid foundation in tech, I have a particular interest in the final product — its user experience, design, and the customer's journey. Collaborating with product and business teams is something I thoroughly enjoy, as it brings together different perspectives for a common goal. My area of expertise lies in Artificial Intelligence, Machine Learning, and Natural Language Processing. Here are some of the services I commonly offer: - Strategic AI audits and guidance - Elevating existing products with AI enhancements - Designing and developing new AI-centric solutions - PoC/MVP for AI projects I've had the privilege of working with over 50 companies, including notable names like UBS, Yahoo, STC, and Hitachi. This experience has allowed me to contribute significantly to the growth and transformation of various products. Interested in exploring how AI can revolutionize your product? I'd love to chat about your vision and how we can bring it to life. Feel free to reach out, and let's start a conversation about your next big step in innovation. ----------------------- Some of my AI and ML skills include: ✅ Data Science and Machine Learning expertise including Deep Learning, Natural Language Processing, and Computer Vision using TensorFlow, PyTorch, Keras, scikit-learn, Numba, etc. ✅ API Development and Integration, including external API integration like OpenAI API. ✅ Expertise in Reinforcement Learning and its applications in complex environments using libraries like OpenAI Gym, Stable Baselines, and RLlib. ✅ Advanced skills in data preprocessing, feature engineering, and dimensionality reduction techniques for machine learning models. ✅ Proficiency in time-series analysis and forecasting using ARIMA, LSTM, and Prophet for predicting future trends. ✅ Development of chatbots and virtual assistants using platforms like Dialogflow, Rasa, and Microsoft Bot Framework. ✅ Experience with Generative Adversarial Networks (GANs) for creative applications such as art generation, style transfer, and data augmentation. ✅ Implementation of recommendation systems using collaborative filtering, content-based, and hybrid approaches. ✅ Proficient in big data analytics using Apache Spark, Hadoop, and related ecosystems for handling large-scale data processing. ✅ Knowledge of edge computing and deploying AI models on edge devices using TensorFlow Lite, PyTorch Mobile, and ONNX. ✅ Expertise in computer vision tasks like object detection, image segmentation, and facial recognition using OpenCV and Dlib. ✅ Strong background in mathematics and statistics, essential for algorithm development and model optimization. ✅ Experience with cloud platforms like AWS, Google Cloud, and Azure for deploying and scaling machine learning models. ✅ Capable of conducting AI-driven research and development, staying at the forefront of emerging technologies and methodologies. ✅ Ability to communicate complex AI/ML concepts to non-technical stakeholders and collaborate effectively with interdisciplinary teams. P.S. Curious about the future of AI in your industry? Drop me a message, and I'll share my insights and predictions!
    Featured Skill Apache Kafka
    RESTful Architecture
    RESTful API
    NGINX
    Web Application
    Database Architecture
    API Integration
    Elasticsearch
    Hibernate
    Spring Framework
    Java
    Docker
    Microservice
    Kubernetes
    Architectural Design
  • $20 hourly
    • 5.0/5
    • (5 jobs)
    With over six years of experience in software development, I excel in creating scalable, secure applications using Java, Spring Boot, and Spring MVC. My technical expertise includes Hibernate, Thymeleaf, PostgreSQL, and RESTful Architecture, ensuring robust and efficient solutions. I have successfully delivered full-stack applications and managed cloud infrastructures with AWS and Terraform, optimizing performance and cost-effectiveness. My experience in microservices and database management with PostgreSQL guarantees structured and secure data access. I am a problem solver with a focus on clean, maintainable code, and I prioritize client communication to align with business objectives. My education and continuous learning in software development further enhance my ability to deliver innovative solutions. I am eager to bring my skills to your project and help achieve your goals with cutting-edge software solutions.
    Featured Skill Apache Kafka
    API Integration
    Microservice
    Spring MVC
    REST API
    PostgreSQL
    Java
    API
    RESTful Architecture
    SQL
    Spring Boot
    Thymeleaf
    Hibernate
  • $45 hourly
    • 2.7/5
    • (2 jobs)
    I'm a dedicated Software Engineer with over 8 years of rich industry experience. Along the way, I've honed my leadership skills by managing dynamic teams and have become known for my excellent communication abilities, both with technical teams and non-technical stakeholders. My expertise lies in Java, Microservices, and creating robust Cloud-centric solutions. I also possess a strong background in constructing automated CI/CD pipelines on GitLab, ensuring efficient and streamlined development cycles. While these form my core strengths, I'm also well-versed in Python and bash-scripting, bringing a diverse skill set to any project. I take pride in having architected and developed two Cloud-native projects from scratch: a dockerized Spring Cloud Microservices application on AWS and a highly scalable serverless AWS Lambda-based application. I'm eager to channel my skills and passion into enhancing and driving forward your product or service. Let's collaborate to achieve excellence!
    Featured Skill Apache Kafka
    CI/CD
    React
    AWS Lambda
    Amazon Web Services
    SQL
    RESTful API
    JavaScript
    Spring Framework
    Java
    Python
    Microservice
    API
    MongoDB
    Hibernate
  • $25 hourly
    • 5.0/5
    • (3 jobs)
    I’m a developer with experience in building both front end and back end 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! I’m experienced in Java, Spring, Hibernate, SQL, Docker, Jenkins, React, Angular, JavaScript, plain HTML and CSS I’ll fully project manage your brief from start to finish.
    Featured Skill Apache Kafka
    Jenkins
    Docker
    Angular
    Redux
    CSS
    HTML
    React
    JavaScript
    MySQL
    PostgreSQL
    Spring Boot
    Java
  • $30 hourly
    • 5.0/5
    • (5 jobs)
    Experienced Java Developer with 5+ years in backend development. Proficient in Java, Spring, Quarkus, and cloud technologies. Strong expertise in microservices, databases, and DevOps tools. Adept at designing scalable architectures and optimizing application performance. Passionate about writing clean, maintainable code and mentoring junior developers.
    Featured Skill Apache Kafka
    GraphQL
    PostgreSQL
    MySQL
    Elasticsearch
    Gradle
    Spring Boot
    CI/CD
    Hibernate
    Docker
    API
    RESTful API
    RabbitMQ
    Object-Oriented Programming
    Web Development
  • $30 hourly
    • 5.0/5
    • (1 job)
    Summary Experienced and proactive Lead AQA Engineer with technical background (Technical and Economical University degree, business school) with focus on testing backends with complex logic. The main automation stack is Java, worked with Ruby and Python (base knowledge). Started automation testing on the project from scratch, build up AQA and Performance/Load teams, managed testing processes, long and short terms plans, was responsible for the professional team growth.
    Featured Skill Apache Kafka
    Python-Requests
    Rest Assured
    Continuous Integration
    RESTful API
    Team Management
    Test Automation
    Selenium
    API Testing
    Python
    GitLab
    Java
    Software Testing
    Docker
    Jenkins
  • $80 hourly
    • 0.0/5
    • (0 jobs)
    Senior Java Developer, interested in writing quality well tested code and designing optimal solutions. I’m able to work on backend solutions from start (analysis of requirements), to end (implementation and delivery)
    Featured Skill Apache Kafka
    Code Refactoring
    Architectural Design
    AWS Development
    Amazon DynamoDB
    Spring Framework
    Kotlin
    Java
    Microservice
    SQL
    Spring Boot
    PostgreSQL
    Apache Cassandra
    JUnit
  • $60 hourly
    • 0.0/5
    • (0 jobs)
    I am excited to offer my expertise as a Senior Java Developer and Solution Architect with hands-on experience delivering high-quality, scalable software solutions for international clients. With a strong foundation in computer science and over 15 years of professional experience, I have successfully contributed to the design, development, and deployment of complex systems—particularly within regulated industries such as healthcare and telecommunications. My primary focus is on backend development in Java 17, leveraging modern language features like pattern matching and sealed classes, combined with Spring Boot (Web, Data, Security) and Hibernate. I specialize in building microservices architectures integrated with PostgreSQL, Kafka (for asynchronous communication and event sourcing), and Kubernetes/OpenShift for container orchestration. I have deep experience in setting up CI/CD pipelines using Jenkins and ArgoCD, deploying Dockerized applications to AWS, and ensuring high availability and fault tolerance. I am also well-versed in modern DevOps practices, GitOps workflows, and infrastructure monitoring using Prometheus and Grafana. My toolset includes Testcontainers for integration testing, Cucumber with Gherkin for E2E scenarios, and SonarQube for static code analysis. I value clean architecture, test-driven development, and clear API contracts (OpenAPI-first approach). In addition to my technical strengths, I bring proven project leadership capabilities—driving development processes, aligning teams with business goals, and delivering results on time and within scope. I am dependable, curious, and passionate about creating robust, maintainable solutions that bring real value to end users. I believe my background aligns well with your needs, and I’m confident that I could contribute meaningfully to your team from day one. Please find my resume attached. I would be happy to schedule a call or meeting to explore how I can support your goals. Feel free to contact me anytime :)
    Featured Skill Apache Kafka
    AI App Development
    DevOps
    Test Automation
    OpenAPI
    REST API
    Flutter
    Angular
    Microservice
    CI/CD
    Docker
    PostgreSQL
    Kubernetes
    Spring Boot
    Java
  • $45 hourly
    • 0.0/5
    • (1 job)
    - Results-driven software engineer with 3 years experience in IT - Programming Languages: Java, Javascript - Experienced in estimating, designing, implementing and testing of Java-based complex and high-performance applications - Soft skills are teamwork, time-management, quick witty, assiduity, communication - Interested in staying up-to-date with the latest technologies and best practices in software development.
    Featured Skill Apache Kafka
    AWS Development
    Spring Cloud
    React
    Kubernetes
    Facebook JavaScript
    Hibernate
    Spring Data
    Spring Boot
    JavaScript
    Java
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    👋 Hi, I'm Paul, an IT expert helping businesses succeed through smart technologies. Have expertise in many areas, including FE+BE, Mobile, ML & AI, Big Data, QA, DevOps, and Design. An in-house robust team of over 300 specialists with such key strengths as: ➤ Java, .NET / C#, Python, Node.JS, ➤ JavaScript, React, Angular, Vue.js, TypeScript, ➤ Kotlin / Java, Swift / Objective-C, React Native, Ionic, Flutter ➤ Machine Learning / ➤ Big Data ➤ Quality Assurance (QA) and DevOps. ➤ UX/UI Design 💻 Our Services: - Custom Software Development: - Team Extension (Staff Augmentation, Dedicated Teams): - IT Outsourcing: 📈 Let's embark on a journey of technological excellence together! ______ Agile Software Development, Web Development, Mobile Development, Website Development, App Development, Software Expert, Gugu, Application Development, Platform Development, Android, Spring, Hibernate, Liquibase, Kubernetes, RabbitMQ, Postgres, Microservices, Desktop, API, NoSQL, MongoDB, SQL, MSSQL, MySQL, Java, Azure, AWS, Application, Website, Solutions, Job, Full Stack Developer, SaaS, MVP, MVC, MVVM, Hire, Agency, Company, Startup, Digital, Effective, Productive, Experienced, Seasoned, Developing, Creation, Corporate, IT, Tech, Technology.
    Featured Skill Apache Kafka
    Flutter
    Mobile App
    PostgreSQL Programming
    MongoDB
    NGINX
    JDBC
    Kubernetes
    Liquibase
    PostgreSQL
    Hibernate
    Spring Framework
    Apache HTTP Server
    Spring Boot
    Java
  • $35 hourly
    • 0.0/5
    • (0 jobs)
    Java Software Engineer | Lublin, Poland Software Engineer with over 6 years of experience developing web applications. Extensive expertise in full-stack development, CRM platform integrations, and microservices architecture. Proven track record in optimizing systems and resolving technical issues promptly.
    Featured Skill Apache Kafka
    Spring Framework
    Memcached
    Docker
    Mockito
    JUnit
    JavaScript
    MySQL
    SQL
    Dropwizard
    React
    Spring Boot
    Automated Testing
    REST API
    Java
  • $20 hourly
    • 5.0/5
    • (1 job)
    - 10+ years of professional experience in JVM-based software development. - Expertise in Scala’s modern FP stack (Typelevel, ZIO, Akka), data engineering (Hadoop, AWS, Spark), and Java (Spring) for high-performance solutions. - A product-oriented mindset, focused on understanding the business domain deeply to deliver solutions that align with and exceed business expectations.
    Featured Skill Apache Kafka
    Distributed Database
    Distributed Computing
    Microsoft SQL Server
    PostgreSQL
    ClickHouse
    PySpark
    Google Cloud Platform
    Amazon Web Services
    Microsoft Azure
    Java
    Apache Flink
    Apache Spark
    Python
    Scala
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    - 8 years of professional experience in Software Industry - Extensive expertise in Ruby and Ruby on Rails framework - Built and maintained web applications across diverse domains - Proactive engineer with a product-oriented mindset, consistently improving processes and technical infrastructure - Strong grasp of efϑicient workϑlow principles - Collaborative team player with a strong interest in continuous learning - Communication skills
    Featured Skill Apache Kafka
    Swagger
    Redis
    NGINX
    macOS
    Linux
    Elasticsearch
    AWS CloudFront
    AWS Lambda
    Git
    MySQL
    PostgreSQL
    Ruby
    RSpec
    Ruby on Rails
  • $70 hourly
    • 0.0/5
    • (0 jobs)
    Specialties: Internet Aplication Development, Aplication Design, Software Development, Database Managment, Unix and Linux System Administrator, Windows Administrator, Network Administrator, IT Manager.
    Featured Skill Apache Kafka
    JavaScript
    PHP
    Python
    Linux
    PostgreSQL
    MySQL
    Oracle Database
    Java
    Kotlin
    Software Development
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    I’m a Senior Software Engineer specializing in backend development and AI-powered data engineering, passionate about building scalable systems that turn data into actionable intelligence—turning data into decisions, and code into impact. With over 12 years of experience, I help businesses unlock the true potential of their data through clean code and innovative AI integration.
    Featured Skill Apache Kafka
    Apache Airflow
    SQL
    Python
    .NET Core
    C#
    LangChain
    Spring Boot
    TypeScript
    JavaScript
    Java
    Data Analysis
    ETL Pipeline
    ETL
    Machine Learning
  • $33 hourly
    • 0.0/5
    • (0 jobs)
    I am software engineer specialised with backedn technologies. Working for large data-oriented company. Knowing data processing, backend development and DevOps tools.
    Featured Skill Apache Kafka
    Apache Spark
    Python
    Scala
    Elasticsearch
    Spring Data
    Spring Boot
    Spring MVC
    Java
  • $35 hourly
    • 0.0/5
    • (0 jobs)
    I work as a software developer for over 30 years. I have rich experience in development of backend systems with databases, big data, microservices and clouds. I am using functional programming and object oriented languages Scala and Java. I am focused on correctness, performance, scalability, flexibility, configurability and maintainability of resulted working systems and solutions. I am following principles of testing driven, continuous delivery, versioning, observability, clean code, reactive event streams, domain modeling, safety declarative guaranties proofs, static types, contract interfaces, layers and modules in software development. I also have some experience with programming languages Haskell and Go. I actively research in practical usage of advanced concepts in software development such as applied category theory, effects handlers, metaprogramming and embedded custom domain specific languages.
    Featured Skill Apache Kafka
    RxJava
    Functional Programming
    Haskell
    AWS Development
    AWS Lambda
    Golang
    MongoDB
    Couchbase Server
    Elasticsearch
    SQL
    Apache Spark
    Java
    Scalaz
    Scala
  • $80 hourly
    • 4.9/5
    • (20 jobs)
    Linux, C, C++, Clojure, AWS, PostgreSQL, MySQL, MongoDB, DynamoDB, ElasticSearch, Data Pipelines, Docker, Infrastructure Architecture, GraphQL, Deployment, Monitoring and Maintenance I’m a Software Engineer with great Infrastructure background. I know how to build things quickly and cost-effectively even in a cloud. Last projects: - Actimobile.com - VPN: Principal Engineer - Palta.com - Co-Founding Company: Backend & Infra Architect - wanna.fashion - Virtual Try On solutions: Backend & Infra Architect - gojuno.com: Juno - Ride Sharing Service: Infrastructure Architect - iron.io - IronWorker, IronMQ, IronCache: Infrastructure Engineer - wargaming.net - World Of Tanks: Infrastructure Engineer
    Featured Skill Apache Kafka
    FreeBSD
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  • $70 hourly
    • 5.0/5
    • (7 jobs)
    Hi, I am CEO of EMCA Software based in Poland. Our service concentrate around all ELK project and use cases. We provide all sort of services around ELK: - architecture design, - full deployment, - custom parsin, - integrations, - auditing and troubleshooting, - migrations. Common use cases we do: Log management, APM, SIEM, CMDB. I can dedicate an engineer, architect or developper to You task. We can work constantly, providing monthly service and optional - rapid help. We are also a vendor of Energy Logserver - Elasticsearch fork for SIEM usecase energylogserver.pl. We develop own ELK fork, because we have turned into SIEM with it. All our projects concentrate around ELK, logs and SIEM - we can also work on different ELK flavours. We work as a Team of ELK experts and developers. We would like to join Your project as we can deliver all expected competencies. As a Team - the service can be provided asap and taken care for long term cooperation. Our knowledge: ELK - all around, Wazuh, Bro, Kafka, elastalert, loadbanalcers We also know Splunk. Providing a connector for Splunk to read data in Elasticsearch! Get in touch to talk how we can help ! Artur
    Featured Skill Apache Kafka
    Elasticsearch
    Logstash
    Kibana
    ELK Stack
    Nagios Core
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