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 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

Daily tasks

• 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.

Requirements

• 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.

Must have: TypeScript, React, Next.js, Java, Spring Boot, REST API

Nice to have: Redux, PostgreSQL, Automated testing, JUnit