Principal Developer / Architect

About the Position

We are seeking a Principal Developer / Architect with at least 8 years of professional software development experience to join our team in Krakow, Poland, building scalable and high-availability applications.

Responsibilities

As a Principal Developer / Architect, you will play a key role in building and evolving the firm’s core application framework used by development teams across the organization. This is a highly collaborative, hands-on role with broad impact.

Key responsibilities:

• Plan, develop, and support the firm’s in-house application framework
• Define and contribute to low-level architecture and core design decisions
• Partner with development teams to help kickstart new projects and provide technical expertise
• Collaborate with developers and business users across the organization to deliver mission-critical platforms and services
• Support investment professionals across equities, credit, and other major asset classes
• Work closely with the broader Technology team on cross-functional initiatives

Requirements

• At least 8 years of professional software development experience
• Deep expertise in C#, ASP.NET, SQL Server
• Good working knowledge of Angular, JavaScript / TypeScript, HTML, CSS
• Full SDLC experience: requirements, implementation, testing, release, and support
• Strong focus on clean, high-performance code (SOLID principles)
• Experience with multi-threaded programming
• Proven ability to build scalable, high-availability applications and support production systems
• Excellent written and verbal English communication skills, including technical discussions
• Strong team-oriented, collaborative working style
• Independent, proactive mindset with a high level of ownership and collaboration

Nice to Have

• CI/CD systems (TeamCity, Octopus Deploy)
• Financial products (equities, derivatives, fixed income, etc. and related terminology)
• Order management systems (i.e., Charles River)
• Working with market data (i.e., Bloomberg Terminal, Bloomberg APIs)
• Workload automation and enterprise job scheduling software (i.e., ActiveBatch)
• Profiling and performance tuning techniques throughout the whole stack

We Offer

• Relocation options
• Experience in an international environment
• Cross-cultural experience
• Feedback culture
• Regular appraisals
• Annual holiday - 20 or 26 days (depending on seniority)
• Occasional leave - 1 or 2 days (depending on circumstances)
• Child care leave - 2 days or 16 hours per year
• Absence due to force majeure - 2 days or 16 hours per year
• Maternity Leave - 20 weeks
• Parental Leave - 41 weeks
• Paternity Leave - 14 days
• Expert-led tech courses
• Internal instructor-led soft skills courses
• Comprehensive in-house self-learning resources
• Access to external self-learning libraries like ProQuest eBook and Udemy for Business
• Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy
• Custom Learning Programs: upskilling, reskilling, technical mentorship
• Leadership Programs for Managers
• Multisport card
• LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.
• One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners
• Preferential banking offer
• Preferential car leasing offer
• Cafeteria program discounts
• Luxoft Social Benefit Fund: sport and recreation benefits
• Private Healthcare Insurance with unlimited access to specialists
• Full dental support
• Travel Insurance
• Life insurance at the corporate rate for employees and family members
• Reimbursement for corrective glasses
• Fun social activities organized by the Luxoft team
• Online entertainment events for the whole company and local team events
• A workplace where you’re treated with respect within a multicultural team
• Rotation between projects and accounts
• New career opportunities

About the Company

We are looking for passionate and creative engineers who are eager to build innovative products and embrace new technologies at a leading hedge fund. You will be part of a small, agile, and highly skilled team of technologists building next-generation platforms to optimize investment decisions.