Principal Full-Stack Developer (.Net+Angular)

Luxoft Poland; Polska; On-site; PLN 240,000 - 360,000; Full time

Job summary

Luxoft Poland searches for an experienced Software Engineer specializing in C#/.NET and Angular to design, build, and maintain scalable enterprise applications. You will collaborate with business stakeholders, translate requirements into technical solutions, and deliver high-quality software in a cross-functional team.

You'll contribute to backend architecture, implement robust unit and integration tests, and ensure high availability through efficient debugging and performance tuning, while

Qualifications

• 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

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

C#/.NET

Angular

TypeScript

REST/HTTP

Multithreading

OO Design

SOLID principles

Unit Testing

English proficiency

Stakeholder collaboration

Tools

REST services

Job description

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

Mandatory Skills Description

• 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 Skills Description

• 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