Senior Full Stack Developer - 6-month Fixed Term Contract in Minehead

Singer Instruments empower scientists in laboratories in over 60 countries to accelerate their research efforts on global challenges. We’re looking for a Senior Full Stack Developer to take ownership of translating complex product discovery specifications into production‑grade, highly scalable features for our new AI SaaS platform.

The Role

Supported by a newly secured public funding grant, we are initiating an intensive engineering phase to transition a laboratory-validated technical imaging technology from a Proof of Concept (TRL 4) into a commercially viable TRL 7 multi‑tenant AI SaaS platform. The platform leverages advanced machine learning models to automate high‑precision feature detection, image normalisation, and automated data analysis. You will be responsible for designing, implementing, and deploying both the user‑facing client applications and the robust server‑side architectures for the SaaS platform.

What you’ll bring to our team (key contributions)

• You will take ownership of the end‑to‑end technical construction of the SaaS web application, translating complex product discovery specifications into production‑grade, highly scalable features.
• Design, develop, and maintain robust, scalable software solutions across the entire technology stack.
• Build and maintain secure RESTful APIs, manage database schemas, and optimise server‑side logic.
• Implement responsive, intuitive user interfaces and deliver a seamless user experience using modern frameworks.
• Lead code reviews, enforce best practices, and provide technical guidance and mentorship to junior members of the team.
• Work closely with Product & Project managers, UX/UI designers, and other engineers in an Agile environment.

Who you are (essential skills & attributes)

• Proven experience building, scaling, and maintaining multi‑tenant SaaS platforms, including user subscription workflows and strict multi‑tenant data isolation.
• 5+ years of commercial full‑stack software engineering experience.
• Extensive, expert‑level experience with cloud platforms, specifically Amazon Web Services (AWS).
• You must be comfortable managing, scaling, and architecting systems using core services like AWS EC2, AWS Lambda, and related infrastructure.
• Strong proficiency in both Python and Node.js to build secure, scalable, and resilient server‑side components.
• Deep expertise in React and modern state management tools for highly interactive, intuitive user interfaces.
• Advanced experience designing schemas and optimising complex queries in relational databases common on AWS, particularly PostgreSQL or MySQL (ideally via Amazon RDS or Amazon Aurora).
• Experience using tools like Terraform, AWS CloudFormation, or AWS CDK to define and deploy infrastructure programmatically.
• Strong ability to work with third‑party vendors, external APIs, and strategic tech partners to smoothly integrate external systems, software components, or infrastructure tools.
• Familiarity with leveraging AI‑driven engineering tools (e.g., GitHub Copilot, Claude) to optimise development speed and team delivery.
• Extensive experience working within fast‑paced Agile delivery teams using frameworks such as Scrum/Kanban, and expert‑level proficiency with project management tools, specifically Jira and Confluence.

Intelligent AI Integration:

• Hands‑on experience embedding AI capabilities directly into platform features to drive user efficiency, specifically:
• Building conversational chatbots and intelligent virtual assistants.
• Developing automated data analysis pipelines to surface business insights.
• Implementing predictive text, smart autocompletion, or generative content tools.

Hands‑on experience building automated build, test, and deployment workflows using GitHub Actions, GitLab CI, or AWS CodePipeline.

Knowledge of implementing secure authentication protocols and protecting against vulnerabilities.

Understanding of data protection regulations such as GDPR and security frameworks like SOC 2.

Experience setting up observability tools like Datadog, New Relic, or AWS CloudWatch to track system health and latency.

Experience writing thorough automated tests using Jest, React Testing Library, Cypress, or Playwright.

You will bring 5+ years of commercial full‑stack software engineering experience to the role. Crucially, while this outlines typical pathways, your unique journey matters more than just a qualification.

Mandatory Grant Compliance & Eligibility

To comply with the strict terms of our public funding body, all applicants must meet the following baseline criteria:

• Sovereignty Status: Candidates must possess an absolute, unrestricted right to work in the UK (UK Nationals preferred). We cannot offer visa sponsorship or international remote working arrangements.
• Geographic Restriction: Every hour of work and line of code must be executed strictly on UK soil. Working from overseas is contractually prohibited.