Senior Full Stack Software Engineer (Node.js / NestJS)

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX and Ul design, managed services, product development, and software development.

This is the job

Join a core platform team supporting the digital transformation of one of the Europes' leading telecommunications companies.

This isn't a typical Full Stack role focused on building customer-facing features. Around 70% of your work will be backend development, building integration services and cloud-native applications with Node.js and NestJS. The remaining time will be spent on frontend development using React and contributing to platform engineering initiatives.

You'll work on business-critical enterprise systems, cloud infrastructure, and integrations with a range of enterprise platforms that support key business operations. You'll also help improve the tools, processes, and platforms that enable development teams to deliver software more efficiently.

If you enjoy solving complex backend challenges, working with modern cloud technologies, and building reliable systems at scale, you'll feel at home in this role.

This is you

We're looking for someone with solid commercial software engineering experience who enjoys working in modern cloud environments and building scalable solutions.

You'll bring experience in many of these areas:

• 5+ years of commercial software engineering experience
• Strong experience with TypeScript and Node.js
• Hands-on commercial experience with NestJS
• Commercial experience with React or Next.js
• Experience working with AWS in production environments
• Experience with Kubernetes, Docker, and Helm
• Experience using Terraform or other Infrastructure as Code tools
• Experience building and maintaining enterprise API integrations
• Experience working on large-scale production systems
• Experience working in Agile development teams
• Fluent spoken and written English

• Experience in the telecommunications industry
• Experience with GitOps workflows and ArgoCD
• Experience integrating with Salesforce, Netcracker, or similar enterprise platforms
• Experience working with Storyblok or another headless CMS
• Experience contributing to platform engineering or developer experience initiatives

As a Senior Full Stack Software Engineer, you'll help build and maintain the services and platforms that support critical business operations.

Your responsibilities will include:

• Designing, developing, and maintaining scalable applications using Node.js, NestJS, TypeScript, and React
• Building and supporting cloud-native solutions on AWS using Kubernetes, Helm, Terraform, and modern deployment practices
• Developing integrations with enterprise platforms, APIs, CRM systems, and third-party services
• Contributing to platform engineering initiatives that improve developer experience, deployment processes, and system reliability
• Working closely with engineers, architects, and product stakeholders to deliver secure, scalable, and maintainable solutions
• Participating in technical discussions, code reviews, and architectural decisions
• Continuously improving application performance, engineering standards, and platform reliability

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.