Principal Full-Stack Developer (.Net+Angular)

Luxoft; Kraków; On-site; PLN 230,000 - 360,000; Full time

Job summary

Luxoft Kraków is seeking passionate software developers to craft innovative financial services products. You will join a small, agile team building risk management and portfolio analytics solutions for hedge funds.

Responsibilities include collaborating with stakeholders, delivering scalable C#/.NET and Angular applications, implementing complex business logic, and ensuring quality through testing, reviews, and continuous improvement.

Qualifications

• 8+ years of software engineering experience ( Hedge fund/financial services preferred).
• Deep expertise in C#/.NET and frontend development with Angular/TypeScript.
• Strong CS fundamentals: algorithms and data structures.
• Solid understanding of OOD/OOP, SOLID, and design patterns.
• Experience with multi-threading and concurrent programming.
• Proven ability to design, build, and support scalable, high-availability applications.
• Excellent written and verbal English communication; collaborative mindset.

Responsibilities

• Collaborate with business stakeholders to translate requirements into technical solutions.
• Design, develop, test, deploy, and maintain scalable applications using C#/.NET and Angular.
• Enhance existing functionality based on user feedback and changing needs.
• Develop complex business logic and analytical calculations for risk and scenario modeling.
• Build and maintain interactive data visualizations, reports, and charts.
• Develop and integrate REST/HTTP-based services and messaging solutions.
• Troubleshoot production issues while ensuring high availability and performance.
• Participate in code reviews, technical design discussions, and continuous improvement.
• Work closely with a small cross-functional team to deliver high-quality software.
• Ensure software quality through unit and integration testing.

Skills

C#/.NET

Angular

TypeScript

Algorithms & DS

Object-oriented design

SOLID principles

Multithreading

Backend architecture

English communication

Ownership mindset

Job description

Project description

We are looking for passionate and creative developers eager to craft innovative products and embrace new technologies. You will be part of a small, agile, and highly skilled team of technologists who are building next generation of solutions for Risk Management team and Portfolio Managers.To thrive in our team, you should possess an independent mindset while enjoying a collaborative working environment. We value candidates with full software lifecycle experience, encompassing requirements gathering, implementation, testing, release, and ongoing support.

Responsibilities

• Collaborate with business stakeholders to understand requirements and translate them into technical solutions
• Design, develop, test, deploy, and maintain scalable applications using C#/.NET and Angular
• Enhance and extend existing functionality based on user feedback and evolving business needs
• Develop complex business logic and analytical calculations to support capital usage and scenario modeling workflows
• Build and maintain interactive data visualizations, reports, and charts
• Develop and integrate REST/HTTP-based services and messaging solutions where required
• Troubleshoot, debug, and resolve production issues while ensuring high application availability and performance
• Participate in code reviews, technical design discussions, and continuous improvement initiatives
• Work closely with a small, cross-functional team to deliver high-quality software
• Ensure software quality through unit testing, integration testing, and adherence to engineering best practices

SKILLS

Must have

• Minimum 8 years of software engineering experience, preferably within the hedge fund or financial services industry
• Deep expertise in C#/.NET
• At least 4 years of frontend development experience
• Strong knowledge of Angular and TypeScript, with hands-on experience within the last 3 years
• Strong understanding of computer science fundamentals, including algorithms and data structures
• Deep understanding of object-oriented design and programming (OOD/OOP)
• Solid knowledge of SOLID principles and design patterns
• Experience with multi-threaded and concurrent programming
• Proven ability to design, build, and support scalable, high-availability applications in production environments
• Strong passion for backend architecture and application development, with a commitment to continuous learning and improvement
• Excellent written and verbal English communication skills
• Strong collaboration and stakeholder management skills
• Independent, proactive mindset with a high level of ownership and accountability

Nice to have

• Experience with Portfolio and Risk Management systems (e.g., What-If analysis, scenario modeling, real-time pricing)
• Familiarity with financial instruments (equities, derivatives, fixed income, etc.)
• Strong grasp of RDBMS concepts, data modeling, and database design
• Practice of Test-Driven Development (TDD) and performance profiling across the stack