Senior Backend Engineer

2 weeks ago

Remote Wrocław Kraków Łódź, Czech Republic Unravel Full time

5+ years of experience in backend development, preferably in a microservices architecture. Strong expertise in Node.js and Golang; proficiency in Python is a plus. Experience with PostgreSQL and database design and Key-Value-Stores like redis for high-availability systems. Solid knowledge of containerization (Docker) and orchestration with Kubernetes. Hands-on experience with AWS cloud services and infrastructure. Familiarity with gRPC communication and API best practices. Familiarity with event-driven architectures based on messaging systems like RabbitMQ and AWS SQS. Understanding of NestJS and exposure to Angular and Svelte frontends. Comfortable working in agile environments with a proactive, solution-oriented mindset. Ability to work independently and take ownership of complex tasks. Basic knowledge in the domain of electric energy industry is a plus. Very good written and spoken English skills. Knowledge of German is an advantage. Job Description The project is an advanced digital twin platform that unifies all energy and climate-relevant data into a single, comprehensive solution. It is designed to support all stakeholders involved in the energy transition by providing precise, data-driven insights and decision-making tools. Through a modular architecture, the platform addresses the most critical challenges of the energy and climate transformation – from CO₂ balancing and renewable energy expansion to power grid planning and municipal heating strategies. About the Role We are looking for an experienced and independent Senior Backend Engineer to join our agile development team. In this role, you will design, build, and maintain scalable microservices using modern backend technologies. You will have the opportunity to shape architecture decisions and work closely with cross-functional teams to deliver high-quality software solutions. ,[Design, develop, and maintain microservices-based backend systems using Node.js, Golang, and Python. , Design and optimize models and queries in PostgreSQL for high performance and scalability. , Develop and maintain APIs using gRPC and REST standards. , Containerize and deploy applications using Docker and orchestrate them with Kubernetes on AWS infrastructure. , Contribute to the architectural design of distributed systems. , Collaborate with frontend developers working with Angular and backend teams using NestJS. , Ensure system reliability, scalability, and performance. , Work independently, driving projects from concept to production. , Participate in agile ceremonies, peer reviews, and continuous improvement processes. ] Requirements: Golang

  • Senior Backend Developer @ RemoDevs

    2 weeks ago

    Remote, Wrocław, Gdańsk, Warsaw, Kyiv, Kraków, Czech Republic RemoDevs Full time

    5+ years as a professional developer, with strong experience in Backend Development in a SaaS environment. Expert in Python 3.10+ and Django 4.x (REST APIs, ORM, async tasks). Skilled in system design and building distributed systems on AWS. Deep knowledge of PostgreSQL, Redis, and Elasticsearch/OpenSearch. Hands-on AWS experience (ECS, Lambda,...

  • Senior Backend Engineer

    2 weeks ago

    Remote, Kraków, Czech Republic GrassRoots Full time

    You’ll be great if you have 6+ years professional backend experience (or equivalent impact). Strong Python skills with FastAPI and/or Django in production. Deep SQL chops with PostgreSQL (query tuning, indexes, migrations, transactional integrity). Asynchronous Python (async/await), task queues (Celery/RQ), event systems. Experience building distributed,...

  • Senior AWS Python Backend Engineer @ Holisticon Connect

    7 days ago

    Remote, Wrocław, Czech Republic Holisticon Connect Full time

    ✅  You might be the perfect match if you are/have: 4+ years of professional backend software development in Python; Good understanding of event-driven development; In-depth knowledge of a variety of AWS cloud services and solutions; Hands-on solid knowledge of containerisation technologies such as Docker; Ability to work with Unix and Bash shell...

  • Senior Backend Engineer

    7 days ago

    Remote, Wrocław, Kraków, Białystok, Łódź, Warszawa, Gdynia, Czech Republic Spyrosoft Full time

    Strong professional experience with Kotlin and Java Expertise with Spring Boot framework Solid understanding of microservices architectures Hands-on experience with Kubernetes and containerization technologies Proficiency in Git, CI/CD, and modern DevOps practices Familiarity with database design and management Passion for renewable energy and...

  • Senior Backend Developer

    2 weeks ago

    Remote, Gdańsk, Wrocław, Warsaw, Kraków, Poznań, Czech Republic RemoDevs Full time

    5+ years as a professional developer, with strong experience in Backend Development in a SaaS environment. Expert in Python 3.10+ and Django 4.x (REST APIs, ORM, async tasks). Skilled in system design and building distributed systems on AWS. Deep knowledge of PostgreSQL, Redis, and Elasticsearch/OpenSearch. Hands-on AWS experience (ECS, Lambda,...

  • Backend Engineer with Golang @ VirtusLab

    2 weeks ago

    Remote, Kielce, Kraków, Wrocław, Czech Republic VirtusLab Full time

    What we expect in general 6+ years of experience in backend development, preferably in platform engineering. Strong proficiency in one or more backend programming languages (Go, Python, Node.js, etc.). Experience with cloud platforms (AWS, GCP, Azure) Hands-on experience with containerization (Docker, Kubernetes) and serviceorchestration. Excellent...

  • Senior Backend Engineer @ vonRoll Infratec

    3 days ago

    Kraków, Czech Republic vonRoll Infratec Full time

    Experience in applying architectural styles and using design patterns 5+ years of experience in PHP Knowledge of Symfony or other PHP framework Experience in delivering solutions from kick-off until deployments Experience in maintainig and bug fixing Knowledge of GIT and Git flow Fluent communication in English, written and verbal Proactive communication and...

  • Senior Fullstack Engineer @ Sunscrapers

    7 days ago

    Remote, Czech Republic Sunscrapers Full time

    What’s important for us? Expertise in TypeScript Proficiency in React its latest ecosystem, like hooks, react-query etc Proficiency in CSS and related tooling (Sass or Less) Experience with designing and consuming REST APIs Excellent command in spoken and written English, at least C1 Attention to detail and sense of aesthetics, from clean code to beautiful...

  • Senior Java Backend Developer @ Upvanta

    2 weeks ago

    Remote, Czech Republic Upvanta Full time

    Skills and attributes for success Excellent knowledge of Java supported by 8+ years of professional experience Many years of experience in commercial projects in development and maintain scalable backend services using Java, Spring, Spring Boot, and microservices architecture Experience in design and implementation secure RESTful APIs, Practical experience...

  • Senior Backend Engineer

    2 weeks ago

    Remote, Czech Republic HomeBuddy Full time

    You’re going to need this to be successful in this role 5+ years of professional development experience, with experience in PHP/Laravel. Experience in at least one other modern language or framework - ideally .NET Core, Go, Kotlin/Native/Multiplatform. Alternatively, experience in Node.js or Python. Solid understanding of OOP, SOLID principles, and design...