Tech Lead

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

As a Tech Lead, you will drive the technical vision and hands-on development of Data Fabric products. You’ll lead and mentor engineers, establish best practices, and deliver robust, secure, and high-performing solutions across the stack – from modern UIs to backend integration. Your leadership will shape the engineering culture and ensure alignment between technology and business goals.

Sounds like your kind of challenge?

#LI - Hybrid: 2x/week from the office in Kraków

What you'll be doing

Lead and mentor a team of developers, fostering high standards for coding, reviews, and technical design.
Define and communicate technical vision, standards, and best practices across frontend and backend domains.
Design scalable and maintainable architecture for TypeScript/Next.js frontends and integrations with Java Spring Boot services.
Collaborate with product managers, UX, and data teams to refine requirements and ensure smooth delivery.
Drive secure coding practices, performance optimization, and reliability in production systems.
Oversee quality through automated testing, observability, and continuous improvement processes.
Troubleshoot and resolve complex issues across UI, API integrations, and infrastructure.
Support roadmap planning, technical documentation, and stakeholder communication.

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

What you get in return

Flexible cooperation model
Hybrid work setup – 2x/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

Who we're looking for

Proven experience in a Tech Lead, Lead Developer, or similar leadership role.
Strong hands-on development background in TypeScript, React, Next.js, and modern frontend architectures.
Experience delivering full-stack solutions, including working knowledge of Java and Spring Boot.
Deep understanding of REST APIs, authentication flows (OAuth2, JWT), and secure development practices.
Ability to guide system design decisions and implement scalable, maintainable solutions.
Excellent communication skills and experience collaborating with cross-functional teams.

Nice to have:

Familiarity with React Query, Redux Toolkit, PostgreSQL, and containerized/cloud-native environments.
Exposure to observability tools (OpenTelemetry, Micrometer) and automated testing frameworks (Vitest, Playwright, JUnit).

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.

Ready to take the next step?

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