Senior Software Developer (.Net)

Senior Software Developer (.Net)

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.

We are looking for a highly skilled Senior Software Developer to join a team responsible for developing and maintaining applications used within Product Control – including Fair Value Adjustments (FVA), Independent Price Verification (IPV), and regulatory Stress Testing.

The team is focused on extending existing tooling and building new solutions as part of a modernisation initiative that moves from legacy applications to a microservices‑based platform with modular UI, message queues and workflow orchestration.

This role is ideal for an experienced developer who enjoys building scalable, secure, and high‑performing systems while actively participating in code reviews, testing, and continuous improvement.

Sounds like your kind of challenge?

• Design, develop and implement new features within a microservice‑based environment.
• Maintain and support live processes and applications in production.
• Write clean, efficient and secure code following best software engineering practices.
• Use modern AI coding assistants (e.g., Claude Code, GitHub Copilot) to enhance productivity.
• Conduct code reviews and proactively suggest optimizations and security improvements.
• Define test plans and testing strategies in collaboration with QA engineers.
• Participate in design sessions and project planning meetings to share technical input.
• Engage with multiple stakeholder groups to clarify requirements and ensure alignment.
• Work effectively within Agile POD teams to deliver stories and tasks.
• Provide rotational support for production tickets and incidents.
• Configure and manage changes in CI/CD tools to support deployment pipelines.

#Li-hybrid
Note: Detailed project information will be shared during the recruitment process.

• Flexible cooperation model
• Hybrid work setup – remote days available depending on the client’s arrangements - 2 days a week from the office in Kraków
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

• Excellent knowledge of C# and .NET, with demonstrated hands‑on experience building enterprise applications.
• Proficiency in SQL and familiarity with non‑relational databases.
• Working knowledge of Python and preferably PySpark for data‑driven processing.
• Strong understanding of software design patterns, best coding practices and technical documentation.
• Awareness of AI concepts – prompting, limitations, responsible use and safety considerations.
• Excellent collaboration and communication skills (verbal and written).
• Experience in financial or risk systems is advantageous – especially Product Control or Valuation domains (Fair Value Adjustments, IPV, Bid‑Offer processes).

• Familiarity with big‑data and distributed processing frameworks (e.g., Spark).
• Experience with cloud‑based solutions and CI/CD deployment pipelines.
• Knowledge of containerisation and infrastructure automation tools (Docker, Kubernetes).
• Exposure to financial regulatory and reporting systems.

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Submit your application! We look forward to reviewing your profile 😊

Know someone who might be a great fit?
Feel free to share this opportunity using the referral link: Mindbox Referrals System