Senior Backend Developer (Node.js/TypeScript) Belfast / Hybrid At a Glance 5 years of back-end engineering experience, with at least 3 years in Node.js Strong TypeScript skills and a deep understanding of modern JavaScript (ES6) Proven track record designing and building scalable APIs and microservices Cloud-native delivery experience across AWS, Azure, or GCP A collaborative, ownership-driven mindset with a focus on quality and mentorship Who You'll Work For Our client is a modern, cloud-native digital consultancy delivering exceptional engineering, composable commerce solutions, and data-driven digital experiences. With a highly experienced team of around 50 people, they operate on a remote-first basis and are scaling at pace. They take a considered approach to hiring, prioritising people who bring something new to the team, not just technical skills. What You'll Be Doing As a Senior Backend Developer, you will design, build, and optimise high-quality server-side applications and APIs that power complex digital experiences. Working closely with front-end engineers, DevOps specialists, cloud architects, and project managers, your responsibilities will include: Designing, developing, and maintaining scalable Node.js applications and microservices built with TypeScript Building RESTful and GraphQL APIs using modern, best-in-class frameworks Implementing strong patterns for performance, reliability, and maintainability in cloud-native environments Collaborating with DevOps and Cloud Engineering teams to ensure smooth CI/CD pipelines and efficient deployments across AWS, Azure, and other cloud platforms Using serverless functions and cloud-managed services where appropriate to build flexible, scalable solutions Participating in project planning and architectural discussions to guide technical decision-making Leading code reviews, providing constructive feedback, and supporting the growth of junior engineers Staying current with emerging back-end technologies, patterns, and tooling, identifying where they can add value Your Impact You will play a central role in shaping the back-end engineering standards and practices of a growing technical team. Your architectural thinking and commitment to quality will directly influence the reliability and scalability of solutions delivered to clients. Beyond the code, your mentorship will help junior engineers develop and grow, contributing to a culture where everyone around you becomes better. What We're Looking For Essential 5 years of professional back-end engineering experience, with at least 3 years using Node.js Strong understanding of TypeScript and modern JavaScript (ES6) Proven experience building scalable APIs and microservices Hands-on experience with cloud platforms (AWS, Azure, or GCP), including serverless compute Solid understanding of authentication, authorisation, and API security best practices Strong problem-solving skills and familiarity with cloud-native development patterns Desirable Experience with headless e-commerce platforms such as commercetools, Shopify Plus, or BigCommerce Knowledge of event-driven architectures and messaging systems (AWS EventBridge, Azure EventGrid) Experience integrating with enterprise systems and complex third-party APIs, including payments, fulfilment, and ERP Experience delivering large-scale enterprise projects with multiple stakeholders Knowledge of performance optimisation and observability tooling Experience with SQL and NoSQL databases, including ORM/ODM frameworks Familiarity with Infrastructure-as-Code tools such as Terraform or CDK Understanding of CI/CD pipelines and Git-based workflows What's In It For You Competitive salary based on experience Share options under an HMRC-approved EMI scheme Remote-first working with access to co-working spaces 25 days annual leave plus bank holidays Pension matched up to 8% Bupa Private Healthcare and Health Assessments Specsavers Corporate Eye Care Cycle to Work Scheme Training and professional development budget High-spec equipment and home-office budget A supportive, innovative, and inclusive team culture If you're interested or have any further questions on the role, please feel free to reach out to Eve Geddis directly on LinkedIn. Skills: Node.js Typescript AWS API Design GraphQL Benefits: Pension Fund Medical Aid / Health Care ADZN1_NI