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Hire the best Golang Developers in Barcelona, ES

Check out Golang Developers in Barcelona, ES with the skills you need for your next job.
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  • $59 hourly
    • 5.0/5
    • (21 jobs)
    ASAP solutions in case that your application is broken or not working as expected : I can help you! I'm available for quick bug fixing and also for server troubleshooting and recovery. Intro : I am an expert full-stack devops developer (including Linux administration and troubleshooting) with computer engineering studies and 15 years of experience in IT and I’m also an official industrial automation technician (industrial programming, quality, sensing and automated process control). Running Bluengo too. I'm in the central Europe timezone UTC+1 and I'm specialized in building and maintaining the next things: * SaaS platforms (I can also offer white-label SaaS's solutions with no upfront costs, just pay per use) * Management platforms with clients and staff areas (public area + backoffice) * Improve and convert legacy and current applications to high performance and high availability applications. * Internet of Things (IoT) (I have an interesting hardware product for enabling the secure boot of encrypted servers) * Industrial and management processes automation. * Desktop/mobile management apps. * Websites (from WordPress to massive video streaming websites). * Digital signage (reactive playlists, multiplatform Web/Linux/Windows/Android players, piped music, unattended secure kiosks) * Crypto projects. Some technologies I know (keywords): Linux (as DevOps, I can automate operations, maintenance and monitoring of any number of servers) PHP - Symfony - Laravel GoLang Python AWS - S3 - Cloudfront - Batch - EC2 - ECS - Route 53 - VPC's - etc. HTML - JS - CSS Docker - Docker Compose NodeJS Websockets - MQTT Arduino / ESP32 firmware MYSQL MongoDB ElasticSearch InfluxDB Grafana Prometheus Memcached Redis Angular +2 ReactJs React Native Cordova Ionic Crypto and NFT (ERC20, ERC721 ) also BTC developments. Salesforce (Lightning development and Salesforce API integrations) Zoho (Zoho API integrations) Other skills: * Clean code (SOLID, KISS, YAGNI, DRY). * Automation (bash/python scripting, CI/CD, reports, handling events, repetitive tasks, etc.). * Friendly and professional dashboards for processes (instrumentation and alerts). * Improve performance of existing systems (WordPress and custom-made developments). Most successful achievement: * I've been on-call for two years and getting 0 calls regarding issues in a massive global digital signage SaaS platform designed, implemented, built and maintained by myself (uptime of 100% for two years).
    Featured Skill Golang
    Bug Fix
    Linux
    Python
    API Integration
    JavaScript
    Troubleshooting
    Laravel
    ESP32
    Arduino Firmware
    Amazon Web Services
    MongoDB
    WordPress
    PHP
    DevOps
  • $33 hourly
    • 5.0/5
    • (1 job)
    🏆 Top 5% of talent on Upwork 💎 Worked with Fortune 100 & 500 companies ✅ 1600+ hours on Upwork ✅ 100+ projects delivered. ✅ Testing iOS, Android, Web, Desktop Applications ✅ Testing Automation Expert with 10+ years of experience ✅ Python Expert + .NET Expert I'm a seasoned Automation Engineer driven by a deep commitment to enhancing the quality and dependability of software applications. Over numerous years in this field, I've refined my abilities in crafting, coding, and executing automated tests, all geared toward streamlining the QA process. My technical proficiency extends to programming languages like .NET, Java, and Python, while I'm well-versed in a range of automation tools and frameworks, including Selenium, TestNG, and JUnit. I thrive on rapid adaptation to stay current with the latest industry trends and breakthroughs. My ultimate objective is to consistently deliver top-tier outcomes for my clients and contribute positively to their business endeavors. 🙌 If it's a yes, it would definitely be a long-term and profitable partnership for both of us. Let's chat!
    Featured Skill Golang
    Manual Testing
    Swift
    Systems Engineering
    C#
    Python Script
    Project Management
    QA Software & Testing Tools
    Java
    System Automation
    Automation
  • $90 hourly
    • 0.0/5
    • (0 jobs)
    SaaS, PaaS, Cloud, Web, Mobile, API, backend, frontend. I’m the real deal 10x fullstack ninja. Very successful developer with 15 YOE. I make platforms and services happen. Fullstack in broadest sense from mobile & web front ends, API & backend, through to cloud architecture and deployment systems. Apps: award winning and massively successful including an Apple Design Award and recognition from the European Space Agency (Galileo Master). I use React Native, or Flutter. Web: worked with major brands to lead teams that reached audiences of tens of millions DAU. I primarily use Next.js, React, Jekyll. Often Tailwind. API / Backend: designed an API Improvement Program for an organization with 600 developers unifying hundreds of APIs. Expert. I use Node.js or Go, open to FastAPI. Frequently I use Postgres, MongoDB less and less… Cloud: Kubernetes certified. Deep experience with k8s, AWS, Hetzner, STACKIT, and OVH. Primary tools include Terraform, Pulumi, FluxCD, Traefik, Hashicorp Vault, Harbor, Docker, S3, VMs, AzureDevops, GitHub actions, some history with Jenkins. I have broad expertise from being involved at the ground level on many projects as a master of getting greenfield projects started quickly. As a go-to problem solver, I’ve often been brought into projects that are struggling with legacy tech or tech debt that needs a fire fighter capable of getting in deep and proposing effective changes. This has exposed me to a wide set of technologies where I’ve had to go deep, developing a broad skillset that does not lack depth despite the breadth. If you need someone who only does one technology then that’s not me but if you need someone who is capable of doing all of it at a very capable level, often expert, then that’s me. I have energy. I have drive. When I have a problem in front of me it will get solved, either by going deep and cracking it or by changing the system to change the problem. Results are what matter and I bring results. I have lead teams, often providing technical leadership to multiple teams in a Staff or Principal type role. I provide architectures and synthesize business needs into actionable tech plans to be consumed by Product Owners, business leadership, or by developer-led teams. I prefer to work in the Big Design Up Front model, or for more exploratory / bluesky work then SCUM, SAFe, or Kanban work well for me. European time zone (Barcelona) but I’m the type of developer who is often coding until 2am. I’ve never had a complaint about overlap or reachability. I love to communicate. Face-to-face (online or with a coffee) are critical to trust, communication, and partnership but I also seek to ensure asynchronous lines of communication are strong, and to provide deep visibility into progress via quality up-front planning, accurate Jira boards, and an always up-to-date timeline assessment. I want challenges. I just love coding. I love bringing products to life. I take very real satisfaction in being able to deliver high quality faster than most can deliver low quality. I bring a product mindset supported by my formal education in User-centric design, alongside my formal education in Software Engineering, which combine with 15 years of experience creating very high quality products. My broad skillset derives from this product-centered and user-design oriented mindset. I am a technical person, I am an engineer, but I don’t think in terms of technology I think in terms of outcomes and impact. Technology is a tool to enable us to create. I love technology but I really love to create. Let’s make something together. Greenfield projects, SaaS, PaaS, apps, APIs, let’s make them happen. You need a firefighter to save your product? I’ll roll up my sleeves and get in there, and I’ll energize your team while I’m there. I bring passion. That’s not a buzzword, I have it. I bring enormous energy. I can’t let go until the problem has been cracked or redefined. I bring insight. I speak tech, business, and product. I bring experience. I bring a long list of major achievements, Apple Design Award recognition, working with huge brands and huge audiences. I’m excited to see what possibilities exist for us here.
    Featured Skill Golang
    Cloud Architecture
    Linux
    Amazon S3
    Terraform
    CI/CD
    Node.js
    Google Cloud Platform
    Kubernetes
    Agile Software Development
    AWS Development
    App Development
    React Native
    TypeScript
    React
  • $55 hourly
    • 0.0/5
    • (1 job)
    Desired position and salary Devops, SRE Specializations: - Programmer, developer - System administrator Employment: project work, part time Work schedule: remote working, flexible schedule, shift schedule Desired travel time to work: any
    Featured Skill Golang
    Flux
    Amazon EC2
    Kubernetes
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    13+ years of experience in the software engineering field. Strong leadership skills. Experience in building highly effective teams from scratch. Passionate engineer with a strong background in DevOps and Quality Assurance fields. Go, Python, Java programming skills. Strong knowledge of microservice architecture patterns and best practices. Experience in building large-scale high availability distributed systems. Strong understanding of DevOps processes. Hands-on experience with AWS, Google Cloud Platform, Digitalocean. Experience with Docker and modern container orchestration platforms like Kubernetes, Nomad, Swarm. Experience in building CI/CD processes from scratch. Experience in providing real-time monitoring, observability, distributed tracing, alerting, and incident management. Experience in the migration of huge monolithic applications to microservices. Huge experience in Automation testing.
    Featured Skill Golang
    Google Cloud Platform
    DigitalOcean
    Docker
    Continuous Integration
    API Development
    Terraform
    DevOps
    Amazon Web Services
  • $55 hourly
    • 0.0/5
    • (0 jobs)
    I am an experienced Software Engineer, adept at creating exceptional platforms that offer exceptional user experiences. My expertise lies in backend development, where I've utilized languages such as Java, TypeScript and GoLang to architect innovative microservices. Additionally, I possess frontend proficiency with React. I'm motivated to elevate platform quality and performance while cultivating robust customer relationships through cutting-edge solutions.
    Featured Skill Golang
    CATIA
    Agile Project Management
    Agile Software Development
    Testing
    GraphQL
    SQL
    MongoDB
    ExpressJS
    Spring Boot
    React
    TypeScript
    JavaScript
    NodeJS Framework
    Node.js
    Java
  • $10 hourly
    • 0.0/5
    • (1 job)
    Hello! I'm a skilled programmer with a background in mechanical engineering and currently pursuing a master's degree in logistics and supply chain management. I specialize in building efficient and scalable systems, including fleet management platforms, using a robust tech stack that includes Python, SQLAlchemy, Golang, FastAPI, Nginx, PostgreSQL, and Preact. With solid experience in these technologies, I’ve successfully implemented features that support real-time data, manage complex inventories, and optimize fleet operations. My journey in programming began during my university years, where I built a desktop app with Python to simplify a complex task, which I made open-source for my peers. I later developed my first website using React for a client, which further solidified my interest in software development. After graduation, I worked as a breakdown maintenance technician at a public transport provider, where I identified the need for a fleet management system. I took charge of this project, and as the system grew in importance, I was moved to HQ to work on it full-time. Since then, I’ve implemented numerous features and optimized the system for performance, and it is now a core tool at the company. Currently, I’m continuing to develop this project in my free time while advancing my knowledge in logistics and supply chain management during my master’s program. You can check out a demo of the system here: Demo Link (username: demo, password: demopassword). What I Can Do for You: * Build custom software solutions using Python, Golang, FastAPI, and more. * Design and implement fleet management systems, databases, and real-time applications. * Optimize existing systems for better performance and scalability. I’m excited to leverage my experience to help you solve your technical challenges. Let’s discuss how I can contribute to your next project!
    Featured Skill Golang
    Linux
    GPS
    FastAPI
    SQLite
    PostgreSQL
    CSS
    Bootstrap
    Flask
    SQLAlchemy
    Python
    React
    HTML
    JavaScript
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    Adaptable professional with proven communication, problem-solving, and technical skills. Aiming to leverage my abilities to successfully fill the Software Engineer role at a company. Frequently praised as hard-working by my peers, I can be relied upon to help a company achieve its goals. I'm eager to learn and enjoy my work.
    Featured Skill Golang
    Blockchain
    Rust
    Python
    Solidity
    Google Cloud Platform
    Apache Kafka
    Docker
    Elasticsearch
    Spring Boot
    Kubernetes
    Java
    Microservice
    MongoDB
    MySQL
  • $39 hourly
    • 0.0/5
    • (0 jobs)
    Dear client I am a game developer. I dreamed of game development when I was 12. I liked algorithm and attended ACM contest at school. I majored in C, C#, Java, Unity, Cocos2D, Unreal Engine, Android/iOS App and Web Development at university. - Technology 1. C / C++ / C# / Python / Cocos2D / Unity / Unity 3D / Unreal Engine / Roblox / Three.js / Aframe / WebRTC 2. Android SDK / React Native / Hybrid / Xamarine / Flutter 3. CSS / Javascript / Typescript / PHP / Nodejs 4. Python / Golang / Ruby / Solidity / Rust I developed several opensource OS, eCommerce CRM / SFCC and Bank Risk management system using C and C# with classmates at university. I am collaborative and work with a team.
    Featured Skill Golang
    Xamarin
    AR & VR
    Node.js
    Rust
    NFT Art
    Unity
    Solidify
    Python Script
    Unreal Engine
    3D Game Art
    ASP.NET
    C#
    Python
  • $20 hourly
    • 0.0/5
    • (0 jobs)
    Hi, I'm Egor! I'm a Backend Software Engineer with 5 years of experience. I mostly work with Python & Go, also have an experience with Java & C++. I have a vast experience working with AI, including optimizing PyTorch code, deploying models to production, running inference with Triton and building real-time video&audio streaming applications. Besides the AI-related stuff, I've worked a lot with classic backend systems for web and mobile applications (Python: FastAPI, Flask, Django, Tornado; Go: net/http, gin); set up monetization with Stripe, Paddle, Square; integrated analytics and other 3rd party tools. I'm also experienced in setting up and maintaining cloud environments (AWS, GCP, Scaleway) from simple managed containers to complex Kubernetes clusters with custom networking. In addition, managed it via Terraform and set up CI/CD with GitHub actions, CircleCI. Feel free to ping me here or in telegram @ekarp
    Featured Skill Golang
    MongoDB
    ClickHouse
    PostgreSQL
    Kubernetes
    Docker
    Amazon Web Services
    Google Cloud Platform
    FFmpeg
    NGINX
    PyTorch
    Django
    Flask
    FastAPI
    Python
  • $30 hourly
    • 0.0/5
    • (0 jobs)
    I'm n00m4d, a seasoned software developer with over 5 years of experience. My expertise shines in backend and DApp development. Throughout my career, I've specialized in crafting indexers for blockchains and developing innovative DApp projects, transforming user experiences. Technologies and tools I'm working with include Rust, Go, Docker, PostgreSQL, RocksDB, ClickHouse, Redis, and Kafka. Do you have questions or an exciting project in mind? Feel free to reach out, and let's explore the possibilities together.
    Featured Skill Golang
    Solana
    Prometheus
    Grafana
    Docker
    ClickHouse
    Redis
    Apache Kafka
    PostgreSQL
    DApp Development
    Blockchain
    Rust
  • $80 hourly
    • 0.0/5
    • (0 jobs)
    Innovative software engineer offering eight years of experience in the full software development lifecycle from concept through delivery of applications and customisable solutions under agile methodologies. With a keen attention to detail and being able to analyze code and engineer well researched, cost-effective and scalable solutions. Knowledgeable in Java, Go, C# backend scalable services.
    Featured Skill Golang
    Angular
    .NET Core
    API
    JUnit
    .NET Framework
    Apache Kafka
    PostgreSQL
    MariaDB
    Spring Boot
    Java
    C#
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    Seasoned developer - more than 20 years of experience, of which half was fully remote. Currently focusing on Golang, distributed systems, and AI agents. - Working on autonomous LLM agents. - - Golang; TBA - Developed a declarative control flow library for distributed workflows. - - Golang; asyncmachine.dev - Delivered a CLI client for AI data pipelines (startup). - - Golang, UK; instill.tech - Refactored and optimized parts of Wireguard-based mesh networking software (startup). - - Golang, US; netmaker.io - Refactored and maintained fintech REST microservices (enterprise). - - Golang, US; IDT.net - Worked on a distributed web scraping engine for Google Maps (scaleup). - - Nodejs, UK; UB.io - Worked on a mobile e-learning app for chess (scaleup). - - React Native, UK; Chessable.com
    Featured Skill Golang
    Firebase
    VPN
    IPFS
    NoSQL Database
    Distributed Computing
    TypeScript
    JavaScript
    Python
    PHP
    Node.js
    Redis
    Docker
    Kubernetes
    SQL
  • $30 hourly
    • 0.0/5
    • (0 jobs)
    Senior Full-Stack Engineer with 10+ years of experience architecting and developing scalable enterprise solutions. Specialized in high-volume payment systems, real-time transaction processing, and complex system integrations. As a technical leader who has worked with fintech giants like Mercado Pago and financial processors handling billions of transactions annually, I bring proven expertise in: • Designing robust payment solutions with sub-10-second processing times and zero data inconsistencies • Building secure, high-performance APIs and microservices using Java, Golang, C#, and Node.js • Implementing event-driven architectures that scale to handle 40M+ annual transactions • Migrating legacy systems to modern stacks with zero downtime • Leading cross-functional teams to deliver complex projects on aggressive timelines My approach combines technical excellence with business understanding—I architect solutions that not only solve technical challenges but also drive business growth. Recent achievements include developing Toyota's USA-Mexico payroll integration and Redeban's Open Banking QR payment platform. I excel at quickly understanding project requirements and delivering high-quality code that exceeds expectations. Whether you need a complete system architecture or specialized backend development, I bring a "think first, code later" philosophy that ensures efficient, maintainable solutions. Let's discuss how my technical leadership and development expertise can help bring your project to life.
    Featured Skill Golang
    Application Integration Software
    AI Agent Development
    Architectural Design
    Cloud Computing
    API Development
    Python
    Node.js
    JavaScript
    React
    C++
    C#
    ASP.NET Core
    ASP.NET
    Java
  • $28 hourly
    • 0.0/5
    • (0 jobs)
    A Senior Software Developer with over 10 years of enterprise software development. I am currently the CTO of Level5 Digital and previously the head of Application and Database at ACTV (African Cable Television). Outside of work, i am actively involved in a number of disruptive technology projects. One of these is Koborent; a real estate application that aims to change the way people search for properties online. The second is Pharma Business Insight; a data and analytics platform for pharmaceutical companies and the Federal Ministry of Health (Nigeria). My technical capabilities includes PHP (Laravel), Python (Flask & Django) , JavaScript (VueJS, React), Golang MySQL and some great DevOps skills.
    Featured Skill Golang
    Laravel
    API Development
    AWS Systems Manager
    Vue.js
    CSS 3
    MySQL
    HTML5
    JavaScript
    PHP
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