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Offer summary
(Summary generated by AI based on the full job description)
Project involves delivering scalable web solutions across Java (Spring Boot) backend and React/Next.js + TypeScript frontend. Required skills include system architecture, API design, data integration, testing frameworks (JUnit, Vitest, Playwright) and observability practices. Responsibilities cover leading and mentoring the engineering team, architecting backend services and maintaining frontends, ensuring end-to-end feature delivery, enforcing code quality and observability standards, and collaborating with UX and data teams. Offer includes hybrid work, benefits (private medical care, Multisport, insurance) and professional development support.
from: 28 October 2026
to: 27 November 2026
30 000 - 33 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:lead
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland
Requirements
Expected technologies
Java
Spring Boot
React
TypeScript
JUnit
Vitest
Playwright
Optional technologies
Spark
Next.js
Operating system
Windows
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.
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.
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 siteagile
This is how we work on a project
- Continuous Deployment
- Continuous Integration
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.
What we offer
- 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
Benefits
- sharing the costs of sports activities
- private medical care
- sharing the costs of professional training & courses
- life insurance
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.
Tech Lead
30k–33k zł / mth. (B2B)
I apply to:
Mindbox Sp. z o.o.
Kraków, Lesser Poland
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