Junior Data Engineer

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

 

You will join the AI Markets development team, responsible for providing reporting, analytics, and management information from multiple data sources to a diverse set of users, including senior management, quants, traders, and external clients.

A key component of this solution is kdb+, one of the most advanced time-series databases where speed and performance at scale are critical. You will work with large datasets and real-time systems, focusing on data engineering, performance optimization, and API integration.

Sounds like your kind of challenge? 

What you’ll be doing

Platform Design & Development

  • Develop and optimize kdb+ queries and processes to meet low-latency, high-throughput performance requirements
  • Build analytic and aggregation layers that feed APIs, downstream systems, and AI/ML workflows

Data Engineering & Integration

  • Expose kdb+ data to front-end applications, AI engines, and reporting systems via APIs
  • Collaborate with AI/data engineering teams to deliver structured, high-quality datasets for models

Performance & Reliability

  • Implement monitoring and alerting solutions for kdb+ environments
  • Support failover strategies and disaster recovery plans for critical services

Collaboration & Governance

  • Partner with traders, quants, and business stakeholders to translate requirements into scalable solutions
  • Adhere to internal policies around data governance, operational risk, and model risk complia

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

What you get in return

  • Flexible cooperation model
  • 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

  • A strong analytical mindset and a passion for solving complex data engineering challenges
  • Solid computer science fundamentals or experience with functional programming languages (Haskell, Clojure, Scala) OR vectorization skills in Python, R, Matlab, or Wolfram
  • Interest in large datasets, data modeling, and statistical concepts
  • Familiarity or willingness to learn Linux, Cloud infrastructure, and AI/ML integration
  • Ability to own tasks from requirements gathering to implementation and testing with cooperative engagement
  • Excellent problem-solving skills, proactive attitude, and strong communication skills

Nice to Have

  • Experience in financial services or trading environments
  • Knowledge of cloud platforms and distributed systems
  • Exposure to kdb+/q or interest in building expertise

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. 

Junior Data Engineer

Kraków

B2B

800 - 1000 pln/md netto + VAT

Apply for position

I will handle your recruitment

Marek Lemański

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.

New baby gift

Important moments matter to us.

When a child is born, we prepare a personalised gift. All it takes is a short message to the Talent Network Development team.

do you like
like our offer?

the recruitment process

We support you at every stage

Submit your CV

Apply directly for a selected job offer or simply send us your CV.

Recruiter call

If your profile matches the role or we have a good opportunity for you, a recruiter will get in touch with you.

Profile shared with the client

After the call, we recommend your profile to the client. This is your first real step toward a specific project.

Project interview

If the client wants to proceed, we arrange the meeting. We prepare you for the interview and stay in close contact.

Feedback and decision

You receive feedback regardless of the outcome. If it’s a match, we present an offer.

Contract 100% online

All formalities are handled remotely. Fast, convenient and straightforward.

Ongoing support

Our IT Talent Network team supports you throughout the entire project.

Referral Program

Refer a friend & get up to 6,000 PLN

Do you know an IT specialist who could be a good fit for one of our projects? Share their contact details with us and we’ll take care of the rest.

You can receive up to 6,000 PLN for a successful referral.