Senior Software Engineer

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

 

We are looking for an experienced Senior Software Engineer to join a global AI Markets technology team focused on delivering high-quality, AI-powered solutions for institutional clients. Our mission is to create cutting-edge applications using natural language processing (NLP) and AI to transform how financial markets data is accessed and consumed.

You will be working in a collaborative engineering environment where all stages of the delivery lifecycle matter – from analysis and design through to deployment and production support, following the principle: “If you build it, you support it.”

Sounds like your kind of challenge? 

What you’ll be doing

  • Collaborate in a small team of 4–6 developers, closely aligned with a dedicated product owner.
  • Translate business requirements into development stories and deliver iteratively into production.
  • Maintain production ownership: provide technical support for the solutions delivered.
  • Identify and reduce technical debt, ensuring sustainable code quality while delivering new features.
  • Design and develop scalable, maintainable solutions in Python following internal standards and best practices.
  • Participate in pair programming and cross-skill within the team, contributing to backend and, when necessary, front-end tasks.
  • Take ownership of problem-solving and contribute to continuous integration and delivery improvements.

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 – 2 times a week at Cracow offcie
  • 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

  • 5+ years of hands-on experience with Python, including frameworks and libraries such as Pandas, NumPy, Flask, or Django.
  • Experience in designing and deploying enterprise-level applications with strong coding principles.
  • Knowledge of machine learning, NLP, or AI concepts is an advantage.
  • Understanding of Agile development methodologies and practices.
  • Strong problem-solving mindset and collaborative approach, capable of working with global, multidisciplinary teams.
  • Ability to mentor junior developers and lead by example.
  • Fluent English written and spoken, with excellent communication skills.

Nice to have:

  • Exposure to JavaScript frameworks (e.g., Vue.js) or willingness to learn front-end technologies.
  • Understanding of cloud platforms or experience with KDB.
  • Domain knowledge in financial markets, particularly FX or Rates pricing systems.
  • Familiarity with DevOps practices, containerization, or automation.

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

1400 - 1600 PLN/MD net + VAT

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 take care of every stage of process

Submit your CV

The supplier takes full responsibility for the applications, their performance and load, and monitors and fixes any problems and failures.

Contact with
a Recruiter

The supplier takes full responsibility for the applications, their performance and load, and monitors and fixes any problems and failures.

Sending your CV
to the client

The supplier takes full responsibility for the applications, their performance and load, and monitors and fixes any problems and failures.

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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.