AI-native Full Stack Engineer

Transition Technologies MS S.A. ("TTMS") is a global IT company and part of the Transition Technologies Group, one of the largest IT firms in Poland. Currently, TTMS employs nearly 800 specialists across eight offices nationwide.

TTMS is committed to growth and the continuous development of its employees' skills. We support large enterprises and global corporations by implementing and maintaining dedicated IT systems, as well as automating their business processes. TTMS is also a partner of AEM, Salesforce, Microsoft, and others.

Why join us? We carry out unique, complex, and innovative projects across various industries. Thanks to our flexible collaboration models and multidisciplinary teams, we provide end-to-end project solutions. TTMS is a modern company that cares about the future of our planet-we drive change through environmentally friendly IT solutions.

Our company leverages advanced AI-driven solutions to support the transformation of traditional processes into intelligent, automated operations. With AI solutions, we assist in business process optimization (integration of Webcon + AI), low-code application development (Power Apps), and reporting (Power BI, Snowflake Data Cloud).

Apply today and work with globally recognized clients. Develop your skills with us, take part in exciting projects, and contribute to the success of our clients!

Your responsibilities

• Design and ship end-to-end production features across database, API, business logic, UI, testing, and deployment
• Build reliable, scalable applications with strong data integrity, authorization, validation, and performance
• Design relational data models, safe migrations, APIs, background jobs, and integrations with internal and third-party systems
• Develop modern web applications using Python and React with a focus on maintainability and consistent architecture
• Use AI coding agents across the development lifecycle - from planning and implementation to testing, refactoring, documentation, and code review
• Write clear, verifiable specifications and carefully review AI-generated code, catching subtle issues around security, correctness, performance, and edge cases
• Maintain high engineering standards through strong typing, automated testing, linting, CI/CD, and consistent code patterns
• Own the reliability and performance of the applications you ship, including debugging production issues and participating in on-call
• Collaborate with product and business stakeholders to turn ambiguous requirements into well-scoped, maintainable solutions
• Contribute to architecture decisions, code reviews, engineering standards, and tooling that improve both human- and AI-assisted development

We are looking for you, if you have

• Strong Python skills and hands-on experience building production applications in a typed Python codebase (type hints, mypy/pyright)
• Solid full-stack experience with React, Python (FastAPI/Django), REST/GraphQL APIs, and modern web application architecture
• Strong knowledge of relational databases, particularly PostgreSQL or MySQL, including schema design, indexing, transactions, query optimization, and safe migrations
• Experience designing authentication and authorization for multi-user or multi-tenant applications, including data- and role-level access controls
• Practical experience with runtime validation, automated testing across unit, integration, and end-to-end levels, and production-quality engineering practices
• Proven experience using AI coding agents such as Claude Code, Cursor, or Copilot as a core part of the software development lifecycle
• Ability to effectively decompose ambiguous requirements into precise, verifiable tasks and critically review AI-generated code
• Experience with Docker, CI/CD, cloud infrastructure, and observability
• Familiarity with React, ORMs/query builders, Redis, background job systems, and infrastructure-as-code is a strong plus
• Strong communication skills and the ability to work effectively with both technical and non-technical stakeholders

We offer

• Participation in interesting and demanding projects
• Flexible working hours
• A great, non-corporate atmosphere
• Stable employment conditions (contract of employment or B2B contract)
• Opportunities for development and promotion
• Attractive package of benefits
• Work model: remote or hybrid (2 days per week from the office)

We reserve the right to contact the selected candidates.