Backend Engineer

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

Are you passionate about shaping cutting-edge architecture and delivering innovative solutions? We’re looking for a Backend Engineer to join our client’s team and be part of a transformative journey towards next-generation payment capabilities.

You will play a critical role in delivering Future State Architecture (FSA) for payment processing, introducing a lean and reusable payment processing engine. This engine will become the core of future payment capabilities, providing high-speed, cost-effective, and high-quality product delivery.

Sounds like your kind of challenge?

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

What you’ll be doing

Deliver engineering expertise for Future State Architecture and create best-in-class payment processing capabilities.
Produce high-quality code artifacts, ensuring quality gates are met and robust testing is included.
Design and develop highly available and resilient software in a distributed environment.
Partner with DevOps teams to implement automated infrastructure delivery, CI/CD pipelines, and DevSecOps practices.
Provide technical solutions to complex problems, perform feasibility studies, and deliver architecture guidance in alignment with global standards.
Stay current on emerging technologies and compliance requirements, including cybersecurity and data privacy regulations.

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

8+ years of applied experience as an API engineer with solid understanding of architectural design (gap analysis, data models, etc.).
Strong engineering background in back-end microservices development, application security, authentication, caching, and middleware.
Advanced programming skills in Java (Go and Rust are a plus). Familiarity with Spring Boot and distributed systems design.
Knowledge of Kafka, Docker, Kubernetes, and experience with observability tools (Grafana, Prometheus, Jaeger).
Expertise in cloud environments, networking, identity and access management, and DevOps methodologies.
Experience working in financial institutions, preferably in payment systems.
Strong leadership abilities to mentor and inspire the team, coupled with critical thinking and problem-solving skills.
Excellent English communication skills, both written and verbal.
Bachelor’s degree in Computer Science, Engineering or related field.

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.

Backend Engineer

Kraków

B2B

1550 - 1700 PLN/MD netto + VAT

Apply for position

I will handle your recruitment

Aneta Nankiewicz

SUPPORT & BENEFITS

Private healthcare

Fast access to doctors and medical tests.

Mindbox fully covers the individual package. You can extend the coverage to your partner and family on preferential terms. A wide network of medical providers and clear rules for everyday use.

Multisport

Energy that pays off.

We cover 50% of the card cost. You get access to thousands of sports facilities across Poland, plus a convenient mobile app. Additional cards for family members are available.

Training & development

Practical support for your career growth.

We co‑fund courses, certifications and conferences under a clear Training Policy. You also get access to a library of recorded webinars and trainings – available whenever you need them.

Eyewear or contact lenses co‑funding

Clear vision means comfortable work.

Up to PLN 500 every two years, with an additional PLN 300 available in justified cases. Simple reimbursement, regardless of your form of cooperation.

Group life insurance

Real protection from day one.

Option I is fully funded by Mindbox, Option II is co‑funded. You can include your partner and adult children, with coverage that also applies to treatment and hospitalisation abroad.

Ongoing support from the Talent Network Development

You’re not on your own in a project.

Regular contact, quick response and a partnership‑based approach. You focus on your work — we help take care of the rest.

Regular integration meet‑ups

Relationships that work beyond the project.

Cyclical meet‑ups for contractors in major cities across Poland. A space to talk, exchange experience and stay in real contact with the Mindbox team.

Annual company‑wide integration

One event. The whole community.

A two‑day company gathering with accommodation, transport and a full activity programme. Time to connect teams from across Poland and build shared experiences.