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Remote Senior Quantitative Developer

Back to job offers
  • Remote or Hybrid at Cracow | Poland-based candidates
  • Very good English
  • Banking and Finance
  • Min 7 years of experience minimum
  • 22 000 zł to 30 000 zł per month in B2B

Your Mission 

For one of the largest North American banks to enhance and maintain its production libraries and applications. The bank serves 17 million clients worldwide and provides personal and commercial banking, wealth management, insurance, investor services, and capital markets products and services globally. The mission will be to work mainly with their capital markets teams, focusing on derivatives and fixed income systems.

Project description: We work on maintaining and enhancing a Risk management system for a big bank. The system is a core internal instrument for the data analyst and economist to make risk calculations. It is split into 3 layers:

  • Front end – Microsoft Excel with a fully custom set of function and menus; standalone Python app
  • Business Logic Library – C++ and Python modules on the network
  • Calculation grid – 50k computing grid running the simulations in house, AWS and Azure

Qualifications:

  • 5+ years of experience in software development, ideally in the quantitative finance area
  • Good knowledge of C++ and basic knowledge of Python
  • In-depth knowledge of various (vanilla and exotic) derivative products
  • Familiarity with mathematical models for the dynamics of the financial market
  • FpML knowledge is a plus
  • Numeracy to be able to understand quantitative finance
  • Commercial experience in financial or capital markets
  • Ability to use a version control system, ideally Git
  • Finding yourself in a large codebase
  • Good communication skills
  • Being open to code in other programming languages
  • Fluent in spoken and written English

Please note that the interview process is divided into four parts:

  1. Technical phone screening~30 minutes
  2. Technical interview~2 hours
  3. Non-technical call with hiring manager~45 minutes
  4. Optional: call with client for which you will be working 

They offer: 

  • Necessary equipment to work
  • Flexible working hours
  • Remote work possibility
  • Interesting, challenging and exciting work with international teams
  • English lessons with native speaker
  • Training Budget 
  •  Multisport card

Food, Health, Well-being, Additional:

  • Lunches from Kraków’s restaurants that are delivered both to the office and homes( or a refund of the budget allocated for it) 
  • Kitchen full of food, drinks, fruit, and snacks
  • Private medical insurance
  • Air-conditioning 
  • No dress code
  • The chillout area incudes comfortable bean bags, therapy balls, PlayStation 4 or Nintendo Switch + games stretching area and pull-up bar
  • Team events
  • Indoor parking place for bicycles
Contact us
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Julien Revillot

Associate Partner

For more than ten years, I’ve been driven by one idea — the future of Space and Defense depends on the people behind it. My career began in technical recruitment, where I had the privilege to hire engineers designing cutting-edge systems for aerospace and advanced manufacturing.

Co-founding Demexios was a natural next step: a way to transform my industry knowledge and relationships into a dedicated structure that helps clients recruit faster, smarter, and with strategic alignment.
Over time, I built long-term partnerships with companies leading technological sovereignty — from NewSpace startups developing electric propulsion to defense integrators modernizing tactical and surveillance systems. These collaborations allowed me to form a powerful network of decision-makers, project leaders, and experts who now trust Demexios to deliver when precision truly matters.
Today, my role is not just to connect candidates and companies — it’s to ensure that every hire strengthens our clients projects.

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Matthieu Konarzewski

Associate Partner

Across the landscape of global security, Matthieu Konarzewski was forging his path in the defense sector. With a robust background collaborating with startups and international firms in software, health, fintech, and beyond, Matthieu honed his dual skills in technology and talent acquisition over several forging experience.

His story took a defining turn during a high-stakes engagement with defense contractors, where he specialized in sourcing profiles for mission-critical roles in ballistics, radar systems, and high-security embedded technologies. Imagine Matthieu navigating the complexities of international defense networks, identifying experts in GNC (Guidance, Navigation, and Control) and FPGA development to fortify teams against emerging threats. “I’ve learned how a talented team makes all the difference in achieving concrete results,” Matthieu shares, emphasizing his commitment to being a reliable partner in building resilient organizations.

His focus on defense profiles has led to seamless placements that enhance national security and industrial innovation, all while fostering long-term client relationships.