Senior Python Developer @ Spyrosoft

Proven commercial experience as a Senior Developer in Python – essential for backend development, scripting, and automation tasks Mastery of Python language features, data structures (lists, dictionaries), web frameworks (Django, Flask, FastAPI), and testing (pytest) Experience with AWS EC2, Terraform, CloudFormation, and Kubernetes Familiarity with integrating 3rd-party APIs, working with databases (SQL, NoSQL), cloud providers (AWS, Azure), and CI/CD pipelines Proficiency with Docker and Kubernetes for application containerization and orchestration Expertise in setting up CI/CD pipelines with Jenkins, GitHub Actions, or CircleCI for automated builds, tests, and deployments Ability to create and optimize AI prompts for tools like GitHub Copilot, improving automated code generation Knowledge of industry standards: unit testing, linting (PyLint), and security scanning (Snyk) for software reliability Understanding of microservice architecture, event-driven architecture (Kafka), domain-driven design (DDD), and CQRS Expertise in designing and managing APIs (REST, gRPC, GraphQL) using tools like FastAPI, Flask, or Django Ability to design cloud networking configurations (e.g., VPCs, load balancers) and work with serverless applications like AWS Lambda Familiarity with methods like canary releases, blue-green deployments, and A/B testing for smooth software updates We’ll be happy to see your experience in: AI and LLM development, including GenAI tools like OpenAI API, Hugging Face, LangChain, and prompt engineering (e.g., GitHub Copilot). Advanced deployment and monitoring practices, such as canary releases, blue-green deployments, A/B testing, and tools like Datadog. Code quality and security tooling (e.g., PyLint, Snyk), as well as Infrastructure as Code using Terraform or Microsoft Entra. Cloud networking design (e.g., VPCs, load balancers) and integrations with WebSockets and Slack bots. Identity and Access Management (IAM), including SSO, federated identity, RBAC/ABAC/ReBAC, and LDAP directory services. Join our team in Warsaw, where we’re collaborating on a cutting-edge fintech venture with a global industry leader. Together with our Partner – Klarna, we’re building an IT hub designed to drive innovation in digital payment solutions. We’re on the lookout for top-tier engineers who thrive in dynamic, forward-thinking environments. Spyrosoft is leading the recruitment process, facilitating a seamless experience for candidates who are ready to shape the future of online shopping and payments. This opportunity is ideal for engineers who value independence, proactiveness, and flexibility. Our engagement begins with a B2B contract through Spyrosoft, transitioning to a direct contract with our Partner. We offer a hybrid work model in Warsaw’s vibrant Wola district (3 days from the office). English fluency and eligibility to work in Poland are essential, as is the successful completion of a background check to meet the rigorous standards of the financial domain. Our process: CV selection Initial recruitment screening Online logic test Cultural fit interview ,[Design, build, and maintain Python-based microservices supporting Klarna’s AI-driven internal tools, including Rejection Bot, Appeal Bot, Timeline Bot, and future LLM-powered platforms., Integrate seamlessly with internal APIs (e.g., PTX, Decision Store, OSIS) and third-party systems such as Kiki, FullStory, and Slack., Monitor system performance and user experience using observability tools like Datadog and Langsmith, focusing on key metrics such as latency, error rates, and customer satisfaction., Work closely with cross-functional teams—including Product, Data Science, Legal, and Customer Service—to deliver scalable, compliant, and user-centric AI solutions., Promote engineering excellence through code reviews, CI/CD pipelines, Docker-based workflows, automated testing, and adherence to microservice design principles in a high-velocity development environment.] Requirements: Python, Django, Flask, FastAPI, AWS, Docker, CI/CD, pytest, Terraform, Kubernetes, CD tools, Git, Communication skills