Tech Lead

Technologies we use

Expected

• Java
• Spring Boot
• React
• TypeScript
• JUnit
• Vitest
• Playwright

Optional

• Spark
• Next.js

Operating system

• Windows

About the project

As a Tech Lead, you’ll take ownership of designing and delivering scalable software solutions across the Java (Spring Boot) backend and React/Next.js TypeScript frontend. You’ll guide the team technically and support product excellence in a cloud-native setup.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• at the client's site
• agile

Your responsibilities

• Lead and mentor a cross-functional engineering team, ensuring delivery quality and technical growth.
• Architect robust Java (Spring Boot) backend services and maintain well-structured React/Next.js frontends.
• Ensure end-to-end delivery of product features — from design, through development, to deployment.
• Set and enforce engineering best practices, including testing, code quality, and observability standards.
• Collaborate closely with UX, backend, and data teams to advance product functionality and user experience.
• Drive continuous improvement, ensuring projects align with architectural and performance goals.
• Note: Detailed project information will be shared during the recruitment process.

Our requirements

• Proven experience as a Tech Lead or Senior Full Stack Developer.
• Strong backend experience with Java/Spring Boot and good command of React + TypeScript.
• Solid understanding of system architecture, API design, and data flow integration.
• Familiarity with observability tools and monitoring practices in distributed environments.
• Hands-on knowledge of database design, migration, and testing frameworks (JUnit, Vitest, Playwright).
• Strong communication skills, proactive leadership, and the ability to balance hands-on coding with team guidance.

Optional

• Experience with cloud-native environments and deployment automation.
• Background in data engineering (Spark, event-driven processing).
• Practical experience with Next.js or other modern frontend frameworks.

What we offer

• Flexible cooperation model
• Hybrid work setup – 2 days a week from the office
• 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

This is how we work on a project

• Continuous Deployment
• Continuous Integration

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

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.

Mindbox Sp. z o.o.

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

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.