Senior Lead Full-Stack Developer (.NET, Angular, Microservices)

Quick Facts

• Role: Senior Lead Full-Stack Developer (.NET, Angular, Microservices)

• Focus: Hands-on full-stack development + technical leadership and architecture

• Domain: Defence and security (EU organization)

• Work model: Primarily remote; occasional Warsaw office visits (up to 12 on-site days/quarter)

• Contract: Long-term B2B (minimum 42 months)

• Rate: 320–370 EUR/MD net + VAT

• Start: December 2026 (option to join within 2 months of the offer date)

Description

You will lead and develop enterprise-scale full-stack solutions across the complete software development lifecycle. The work spans frontend (Angular/TypeScript/RxJS/NgRx), backend (.NET/C# and Node.js/NestJS for BFF), and microservices/micro frontends architectures, with an emphasis on scalable, secure, high-quality delivery. You will also mentor teams, translate requirements into design, and optimize performance, security, and quality.

Role description (Responsibilities)

• Design and develop the system

• Lead development teams

• Translate requirements into design

• Optimize software for performance, security, and quality

• Produce technical documentation

• Estimate effort and development time

• Set software development standards

• Propose technical solutions for business needs and technical problems

• Collect and interpret software metrics

• Manage configuration and releases

• Contribute to requirements analysis, testing, QA, change management, and deployment

• Test solutions and develop testing tools

• Document developments and prototypes

• Act as 2nd and 3rd line support

Requirements

• 1+ complete lifecycle experience of a solution

• Practical Senior/Lead full-stack experience

• Micro frontend and/or microservices design/development experience

• Design patterns expertise (OO and functional paradigms)

• Frontend expertise: Angular, RxJS, NgRx, TypeScript, CSS/SCSS

• Backend/BFF expertise: Node.js with NestJS (or equivalent JS frameworks)

• Backend expertise: .NET and C#

• Relational and non-relational database experience

• GraphQL knowledge

• Automated and unit testing experience

• CI/CD knowledge (e.g., Azure DevOps) and containers-based environments (e.g., OpenShift)

• Education: minimum EQF Level 6 (Bachelor’s or equivalent)

• 6+ years professional IT experience

• 3+ years in a similar senior/lead role

• EU Member State citizenship

• English proficiency B2+ (certificate required)

• Willingness to obtain Confidential Security Clearance; initiate screening within first 45 days

• 1+ advanced certification in relevant software domain (or equivalent internationally recognized credential)

Benefits

• Co-financing of private medical care and sports card

• Training and professional development budget

• Collaboration with experienced international teams and technology experts