Senior Software Engineer

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

We are seeking an experienced Java Application Specialist to join our Front-to-Back Trading Technology Team, delivering innovative solutions for Credit Derivatives and Interest Rate Derivatives workflows. You will develop mission-critical applications that enable real-time risk management, improve resiliency, and enhance DevOps/tooling ecosystems across the trading stack.

The role requires a mix of technical expertise, leadership in application development, and strong stakeholder collaboration to improve efficiency and modernize our technology landscape. This is a great opportunity for engineers passionate about trading technology, high-performance systems, and AI-based automation.

Sounds like your kind of challenge?

What you’ll be doing

Design and build scalable, high-performance back-end solutions using market-leading technologies
Act as an Application Specialist for front-to-back systems supporting Credit and IR derivatives trading
Deliver sustainable tooling infrastructure for DevOps, release management, monitoring, and resiliency
Drive modernization and improvements in existing tech stack, processes, and tooling
Collaborate in architecture and design reviews, presenting improvements in engineering forums
Ensure the system supports real-time risk management requirements for global trading workflows
Mentor team members on engineering best practices and AI-driven tooling adoption

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

What you get in return

Flexible cooperation model – choose the form that suits you best
(B2B, employment contract, etc.)
Hybrid work setup – remote days available depending on the client’s arrangements – 2 days a 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

7+ years of hands-on experience in Java backend development, building RESTful services and microservices
Expertise in high-availability service architectures designed for performance and resiliency
Solid experience with SQL and relational databases (PostgreSQL or Sybase), with performance optimization knowledge
Hands-on experience with AI development tools and models applied to software engineering efficiency
Proven track record of owning and delivering Java-based modules or services in production environments
Excellent communication and presentation skills; fluent in English
Strong problem-solving and analytical capabilities, with ability to handle pressure in mission-critical environments
Passionate about technology: continuous learner, always exploring new tools and patterns
Team player mindset with collaborative approach in a global, fast-paced environment

Nice to Have

Experience supporting production environments and troubleshooting under SLA
Familiarity with Agile frameworks, Continuous Integration (CI), and Continuous Deployment (CD) workflows
Domain knowledge in banking or financial trading systems

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.

Senior Software Engineer

Kraków

B2B

1550 - 1750 pln/md netto + VAT

Apply for position

I will handle your recruitment

Karolina Kuśmierczyk-Pazdro

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.