Senior Backend Engineer

New Yesterday

Job Description:

Location: Hybrid 1-2 days/week onsite (Reading or Paddington), rest remote

Contracting period: 4 months with possibility to extend.

Role Overview

We are seeking a Senior Backend Engineer with strong Node.js expertise to design, build, and optimise cloud-native microservices. You'll work in a fast-paced, collaborative environment, delivering high-performance APIs and scalable backend systems for digital, telecom, SaaS, or high-transaction sectors. The ideal candidate combines architectural thinking with hands-on coding, thrives in containerised environments, and embraces DevOps practices.

Key Responsibilities

  • Design, develop, and maintain microservices in production using Node.js and modern frameworks (Fastify preferred; Express, Koa, or Hapi also considered).
  • Implement and maintain APIs using REST, GraphQL, OpenAPI, and Swagger standards.
  • Build cloud-native solutions using Docker, Kubernetes, and cloud providers (GCP preferred; AWS/Azure also relevant).
  • Apply best practices for security (OAuth 2.0, OIDC, CORS, CSRF).
  • Work with SQL and NoSQL databases such as PostgreSQL, MySQL, MongoDB, and Redis.
  • Ensure code quality with unit and functional testing using frameworks like Cypress, Mocha, or Jest.
  • Collaborate closely with DevOps teams, leveraging CI/CD pipelines (GitHub, GitLab) and IaC tools (Terraform, Ansible).
  • Monitor and optimise services using tools like Splunk, StackDriver, Datadog, or Grafana.
  • Mentor junior engineers and contribute to technical knowledge sharing.

Requirements

Technical Skills

  • 5+ years of professional backend development experience, with deep hands-on expertise in Node.js asynchronous programming and non-blocking I/O.
  • Proven track record of delivering production microservices.
  • Solid understanding of cloud-native architectures and containerisation.
  • Familiarity with DevOps pipelines, IaC, and monitoring tools.
  • Strong database skills (SQL & NoSQL).

Soft Skills

  • Clear communicator, able to engage both technical and non-technical stakeholders.
  • Pragmatic approach to problem-solving and mentoring.
  • Proactive in troubleshooting and root cause analysis.
  • Comfortable navigating ambiguity and fast-changing requirements.
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Apply
Location:
City Of London, England, United Kingdom
Salary:
£80,000 - £100,000
Job Type:
FullTime
Category:
IT & Technology

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