We are looking for an experienced Senior Lead Full Stack Developer to join a long-term project for a European Union organization based in Warsaw, operating within the defence and security sector. This role combines hands-on software development, technical leadership, and architectural responsibilities across modern frontend and backend technologies, including Angular, TypeScript, RxJS, NgRx, .NET, C#, Node.js, NestJS, and microservices/micro frontends architectures.
As a senior member of the development team, you will contribute throughout the complete software development lifecycle, support architectural decisions, mentor technical teams, and help deliver scalable, secure, and high-quality enterprise solutions in a highly international environment.
Knowledge and Skills:
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Has gone at least 1 time through the complete lifecycle of the solution.
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Expert in developing enterprise level software systems in specified technology domain.
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Knows UML and can design applications in UML.
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Proficient in designing and developing: data layer, business logic layer and UI layer.
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Worked in Scrum developments.
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Is capable for leading technical teams.
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Holds ability to document effectively technical solutions.
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Presents problem solving skills.
Specific Requirements:
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Demonstrates practical experience in software development as Senior Full-Stack Developer or Lead Developer.
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Demonstrates practical experience in design and development of micro fronted or microservices solutions.
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Possesses outstanding expertise in design patterns from both object-oriented and functional programming paradigms.
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Demonstrates practical experience in frontend technologies development including Angular, RxJS, NgRx, TypeScript, CSS/SCSS.
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Demonstrates practical experience in backend or backend for fronted (BFF) technologies development based on Node.js and Nest.js framework, or alternative JavaScript frameworks.
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Demonstrates practical experience in backend technologies development including .NET, C#.
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Demonstrates practical experience in working with relational (e.g. Microsoft SQL Server) and non-relational databases.
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Posses knowledge of GraphQL.
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Demonstrates practical experience in development of automated and unit tests.
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Possesses knowledge of CI/CD tools (e.g. Azure DevOps) and containers-based development environments (e.g. OpenShift).
Certificates:
At least 1 certification among:
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Advanced level certificate in software development technology domain
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or an equivalent certification recognized internationally (subject to acceptance as a valid credential by the Contracting Authority).
Typical Tasks and Responsibilities
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Designs and develops the system.
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Lead development teams.
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Translates requirements into design.
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Optimizes software from performance, security and quality points of view.
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Produces technical documentation.
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Estimates effort and time for development.
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Sets software development standards.
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Propose technical solutions for business needs and technical problems.
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Collects and interprets software metrics.
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Manages configuration and releases.
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Contributes to requirements analysis, testing, quality assurance, change management, deployment.
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Tests solutions and develops testing tools.
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Documents developments.
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Prototypes solutions.
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Acts as 2nd and 3rd line support.
Formal Requirements:
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Education at minimum EQF Level 6 (Bachelor's degree or equivalent). ICT-related education is not required.
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Minimum 6 years of professional experience in IT.
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Minimum 3 years of experience in a similar role (Senior Full Stack Developer, Lead Developer, or equivalent).
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Citizenship of an EU Member State.
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English language proficiency at minimum B2 level, confirmed by a language certificate.
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Willingness to obtain a Confidential Security Clearance. The security screening procedure must be initiated within the first 45 days of assignment.
What We Offer:
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Long-term B2B contract with SHIMI (minimum 42 months).
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Near-Site delivery model: primarily remote work, occasional visits to the Warsaw office, up to 12 on-site days per quarter.
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Project start: December 2026, with the option to join within 2 months of the offer date.
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Rate: 320-370 EUR/MD nett + VAT
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Opportunity to work on enterprise-scale software solutions in an international environment.
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Co-financing of private medical care and sports card.
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Training and professional development budget.
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Collaboration with experienced international teams and technology experts.
Technologies: Angular, RxJS, NgRx, TypeScript, CSS/SCSS, .NET, C#, Node.js, NestJS, GraphQL, Microsoft SQL Server, Azure DevOps, OpenShift, UML, Microservices, Micro Frontends.
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