Senior Developer (.NET/React)

Posted 14 Days Ago
Be an Early Applicant
London, Greater London, England, GBR
Hybrid
Senior level
Healthtech • Insurance
The Role
Lead full-stack development on a greenfield product: design architecture with central architects, build .NET Core back-end services and React front-end components, use AI tooling (GitHub Copilot), manage Azure DevOps CI/CD, design MongoDB schemas, integrate Microsoft Dynamics CRM, and enforce code quality via reviews and secure AI-assisted practices.
Summary Generated by Built In
Building innovative solutions; enabling safer workplaces for everyone.
 We’ll create a safer working world, building software to support a global network of responsible buyers, suppliers and partners.
 We take the pain out of compliance for over 50,000 organisations globally, helping them protect their people, their operations, and the planet.
Keeping our network of hiring clients, suppliers, and contractors compliant with the standards that matter most, from health and safety and sustainability to ethical behaviour by building best in class solutions.

What that means day to day
Key Responsibilities
• Technical Direction & Architecture Collaboration: Work closely with the central architecture team to shape the technical direction of the product, contributing to architectural decisions and ensuring alignment with enterprise standards. Play a key role in delivering a greenfield project
• Full Stack Development: Build scalable back-end services using .NET Core and responsive front-end components using React.
• AI-Assisted Engineering (Core Expectation): Champion the use of GitHub Copilot as a fundamental part of day-to-day development. Use AI tooling to accelerate delivery, improve code quality, and influence team practices around effective prompting and AI-assisted workflows.
• DevOps Practice: Actively utilise Azure DevOps, managing repository pull requests and configuring CI/CD build and release pipelines.
• Database Management: Design, optimise, and maintain efficient document schemas and queries in MongoDB.
• Integration Support: Integrate with Microsoft Dynamics CRM to streamline business workflows and data synchronisation.
• Code Quality & Governance: Write clean, testable code and participate in peer code reviews, ensuring all AI-assisted output meets strict security and architectural standards.

What you’ll need to be successful
Essential Criteria (Must-Haves)
• Architecture Collaboration: Experience working with architecture functions to influence and implement technical direction, particularly within greenfield or early-stage products.
• AI Tooling Leadership: Strong, hands-on experience using GitHub Copilot (or equivalent) as a core part of development, with the ability to demonstrate how AI can materially improve productivity and code quality.
• Back-End Expertise: Strong proficiency in C# and the .NET framework (.NET Core / .NET 6+).
• Front-End Expertise: Proven professional experience building modern, component-based web applications with React.
• DevOps Knowledge: Solid understanding of Azure DevOps (Repos and Pipelines) for agile task tracking and code management.
• Database Experience: Hands-on experience working with MongoDB or other NoSQL databases.
• API Development: Experience building and consuming web services and RESTful APIs.
Desirable Criteria (Nice-to-Haves)
• CRM Familiarity: Experience with Microsoft Dynamics CRM.
• Cloud Infrastructure: Experience deploying and hosting applications directly within Microsoft Azure or AWS.

What you'll get in return
We have a hybrid workplace policy, where you will work from the office 2-3 days per week.
Our office is located in Shoreditch, London
We want you to be able to do your best work here. We emphasize providing many ways to support our team to do their best work and below are some of the perks and benefits we offer:
 
Personal Health & Wellbeing / Benefits

>🍼 Enhanced Parental Leave 
>🌴Generous annual leave, with the option to buy and sell additional days
>🏥 Healthcare Plan
>💟 Annual Giving Day – an extra day to give back to yourself or your community
>🚲 Cycle-to-work Scheme 
> 🚗 Electric Vehicle Scheme 
 Future Planning

>💰Pension scheme with employer contributions 
>🧬 Life Assurance – 3X base salary
>💸 Rewards Program – access to discounts and cashback  
>🏫 LinkedIn Learning License for upskilling & development 
Interested but don’t feel you meet all the requirements? 

Our recruitment team assesses and reviews all applications against the role and business needs. We believe in people having transferable and soft skills and want you to know that we do consider where an individual might not meet all the criteria, but have the aptitude and capability, nonetheless. Our priority is to ensure we set people up for success. We will make a final call based on our determining whether we can offer the necessary support to upskill or provide the developmental support needed for you to get the best out of this opportunity with us!
Bring Your Whole Self to Work.

We are proudly an equal-opportunity employer. We are committed to ensuring that no candidate is discriminated against because of gender identity and expression, race, disability, ethnicity, sexual orientation, age, colour, region, creed, national origin, or sex. We are dedicated to growing a diverse team while continuing to create an inclusive environment where everyone feels safe and empowered to be themselves.
What you can expect if you apply: 
  • A response to your application within 15 working days
  • An interview process consisting of:
    • An initial discovery call with the recruiter
    • A first stage interview via Microsoft Teams 
    • Additional interview (likely face to face) with the stakeholders you’ll be working with closely in the role
We’re keen to ensure our hiring process allows you to be at your best, so if you need us to make any adjustments, please just let us know.

About
Equal Employment Opportunity   We are an equal opportunity workplace. All candidates will be afforded equal opportunity through the recruiting process. We do not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, disability, gender identity and/or expression. We are dedicated to growing a diverse team of highly talented individuals and creating an inclusive environment where everyone feels empowered to bring their authentic selves to work.   If you are contacted for an interview and require accommodation/adjustments during the interviewing process, please let us know.

Skills Required

  • Experience collaborating with architecture functions to influence and implement technical direction for greenfield or early-stage products
  • Hands-on experience using GitHub Copilot or equivalent AI tooling as a core part of development
  • Proficiency in C# and .NET (.NET Core / .NET 6+)
  • Professional experience building component-based web applications with React
  • Solid understanding of Azure DevOps (Repos and Pipelines) and CI/CD practices
  • Hands-on experience with MongoDB or other NoSQL databases, including schema design and query optimisation
  • Experience building and consuming web services and RESTful APIs
  • Ability to write clean, testable code and participate in peer code reviews, ensuring security and architectural standards
  • Experience with Microsoft Dynamics CRM
  • Experience deploying and hosting applications in Microsoft Azure or AWS
Am I A Good Fit?
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The Company
HQ: Cardiff
617 Employees

What We Do

We help create better workplaces, and help to keep people safe, reduce risks and simplify processes through our expert teams and technology. Since 1979, we’ve been providing our clients with market-leading compliance and risk management solutions. We have expanded over the years to include certification, accreditation, HR and health and safety consultancy for SMEs, and training expertise, resulting in the Alcumus business that exists today. By building great relationships with our customers, we understand their needs and provide a range of technology solutions, advice and support that helps to identify and minimise risks, navigate compliance and create better workplaces to keep people safe. Our solutions go beyond simple box ticking exercises, where we constantly look for new and innovative ways to support and enhance our clients’ businesses and make it easier for them to keep their workforce safe by embracing new and evolving technology. Our team includes over 1,000 employees across our UK, North American, American and APAC offices. We take great pride in being an inclusive organisation by respecting and appreciating each individual, regardless of age, gender, ethnicity, religion, disability, sexual orientation, education, or nationality, creating a safe, positive, and nurturing environment. Whether you’re a contractor, SME or multi-national enterprise, we’re here to help create safe and effective workplaces.

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