Senior Software Engineer

Additional Resources; Greater London; Hybrid; GBP 125,000 - 150,000; Full time

Job summary

A leading biotech firm in Greater London is looking for a Senior Software Engineer to develop and scale innovative software products. This contract-based role offers hybrid working options and a competitive salary of £500 - £700 per day. Candidates should have strong expertise in Node.js and Python, experience with cloud applications, and familiarity with CI/CD processes. Join a forward-thinking tech team to make a meaningful impact in the healthcare sector.

Qualifications

• Previously worked in software engineering roles such as Backend Engineer or Full Stack Developer.
• Strong background in cloud-hosted applications and backend services.
• Expertise in multiple programming languages including Node.js and Python.
• Experience with agile software development practices.

Responsibilities

• Building and scaling new software products within an agile development team.
• Supporting the delivery of innovative health-tech services.
• Collaborating with cross-functional teams including product and UX leads.
• Applying engineering expertise across backend and full-stack development.

Skills

Node.js

Python

Cloud-hosted web applications

Ruby on Rails

Agile methodologies

Git

GitHub workflows

Data modelling

PostgreSQL

Terraform

Tools

CI/CD pipelines

Azure

AWS

GCP

Job description

An exciting opportunity has arisen for a Senior Software Engineer to join a well-established biotech company using large-scale genetic data and AI to predict disease risk and advance precision healthcare.

As a Senior Software Engineer, you will be contributing to the development and scaling of secure, reliable software in a collaborative, agile environment.

This is a contract-based role (12 weeks) offering hybrid / remote working options, a salary range of £500 - £700 per day (Inside IR35) and benefits.

Responsibilities

• Building and scaling new software products within an agile squad.
• Supporting the delivery of innovative health-tech services that positively impact society.
• Collaborating closely with cross-functional teams including product, UX, and engineering leads.
• Applying engineering expertise across backend and full-stack development.

Qualifications

• Previously worked as a Software Engineer, Backend Engineer, Full Stack Developer, Backend Developer, Cloud Engineer, Python Developer, Node.js Developer, Platform Engineer, Infrastructure Engineer or in a similar role.
• Strong background in cloud-hosted web applications and backend services.
• Expertise in Node.js, Ruby on Rails, Python; knowledge of Golang or Typescript is advantageous.
• Experience with agile methodologies, Git, and GitHub workflows.
• Competence in developing and maintaining large-scale web applications, both frontend and backend.
• Familiarity with CI/CD pipelines, test-driven development, and code reviews.
• Proficient in data modelling and relational databases such as PostgreSQL.
• Experience with Infrastructure as Code, particularly Terraform.
• Knowledge of cloud platforms including Azure (preferred), AWS, or GCP.
• Understanding of security and regulatory requirements in software design.

This is a unique opportunity to join a forward-thinking tech team and make a tangible difference. Apply now to be part of this exciting venture.

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Job Info

• Job Title: Senior Software Engineer
• Company: Additional Resources
• Location:
• Posted: Jan 8th 2026
• Closes: Feb 8th 2026
• Sector: IT
• Contract: Contract
• Hours: Full Time