Senior Software Developer

At Mindboxwe 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?

Responsibilities

• 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

Requirements

• 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.

Note:Detailed project information will be shared during the recruitment process.

Benefits

• 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).

Nice to Have

• 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’llbecome part of Mindbox - a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’llback you up every step of the way, accelerate your development, and ensure your skills make a difference.