Who we are
At Mercury, we're redefining how recruitment and staffing firms use technology. Our cloud-based SaaS platform, built on Microsoft Dynamics 365 and the Power Platform, helps businesses automate, scale, and perform at their best.
Founded in 2014, we've grown rapidly into a global organisation with teams across the UK, US, and Australia, trusted by more than 100 customers and 8,000 users. Our growth is powered by innovation and driven by people who care about doing great work. We believe in building technology that changes how the industry works and in creating an environment where talented people can do their best work every day.
What you'll do
As a Senior Full Stack Developer, you'll play a key role in shaping and delivering the next evolution of our web and AI-driven products.
This is a hands-on role, but it's also about ownership, architectural thinking, and influence. We're looking for someone who doesn't just write code, but understands how systems fit together and actively contributes to improving them.
Here's what you'll be doing:
* Design, build and enhance full stack applications using: .NET (C#), ASP.NET Web API (Framework & Core), Angular, TypeScript, HTML5, CSS3/SASS
* Develop scalable, secure RESTful APIs that integrate seamlessly within our wider Microsoft ecosystem
* Work extensively with Microsoft Azure, including AI services and emerging frameworks
* Contribute to AI-powered initiatives such as intelligent pre-screening, matching logic, and conversational interfaces
* Collaborate closely with Product Owners, QA, Architects and fellow Developers within an Agile SCRUM environment
* Participate fully in refinement, sprint planning and reviews - helping shape both technical and functional direction
* Conduct code reviews and champion clean, maintainable coding standards
* Mentor and guide junior and mid-level developers
* Take ownership of technical solutions - proposing clear, structured plans to move from current state to future state
* Adapt confidently when priorities shift in a fast-moving product environment
We're building new products as well as enhancing existing ones, so you'll have the opportunity to work on greenfield initiatives alongside complex, evolving systems.
What we're looking for
We're looking for a senior developer who combines technical depth with ownership, collaboration, and the confidence to help shape how we build and evolve our products.
We're looking for:
* Strong commercial experience with .NET C#, Angular, and building robust ASP.NET Web APIs within a RESTful architecture.
* Solid experience working with Microsoft Azure, including cloud-based application development.
* A strong understanding of clean coding principles, unit testing (MSTest/NUnit), source control (Git/TFVC), and delivering production-ready, maintainable solutions.
* Experience working within a collaborative Agile/SCRUM environment, actively contributing to refinement, planning and review sessions.
* Systems-level thinking - able to understand how features fit into wider architecture and propose structured, scalable solutions.
* Ownership and accountability - comfortable managing your workload, communicating timelines clearly, and taking initiative rather than waiting for direction.
* Strong communication and collaboration skills, with the ability to mentor others and adapt positively in an environment where priorities can evolve.
Bonus points for:
* Experience designing or implementing AI-driven solutions, ideally within the Microsoft ecosystem.
* Exposure to Azure AI services, agentic frameworks, or similar emerging technologies.
* Understanding of design patterns and SOLID principles.
* Experience with CI/CD pipelines and secure applications (e.g. OAuth2).
* Exposure to Dynamics 365, Dataverse, microservices, or queuing architectures.
Why Mercury
At Mercury, we pride ourselves on fostering a vibrant company culture that strikes the perfect balance between professionalism and a modern, enjoyable work atmosphere. Our commitment to employee well-being and growth sets us apart. Here's what you can expect when you join our team:
Healthy Work-Life Balance:
Hard work is essential, but we understand that it doesn't mean endless hours. Unsociable work schedules are not the norm here. We believe in productivity and not burnout.
Agile and Empowered:
Our commitment to Agile and Scrum methodologies empowers our developers. From top management down, everyone understands the importance of efficient processes and collaboration.
Flexible Environment:
We embrace flexible working arrangements. Whether it's remote work or flexible hours, we trust our employees to find the balance that suits them best.
Open Communication:
Transparency is key. We encourage open dialogue, active listening, and constructive feedback. Your voice matters.
Gratitude and Autonomy:
We appreciate hard work and celebrate achievements. You'll have the autonomy to make an impact and contribute meaningfully to our success.
Accessible Leadership:
Our leadership team is approachable and supportive. You'll find guidance and mentorship readily available.
Equality and Inclusion:
We champion diversity and equality. Everyone deserves respect, fairness, and equal opportunities.
Investment in Growth:
We provide training and career growth opportunities. Don't just take our word for it, our team members' testimonials speak volumes.
What we offer
* Competitive salary
* Great learning and development plan
* Microsoft certifications paid for and supported by Mercury
* Permanent Health Insurance (PHI)
* Health Cash Plan
* Critical Illness Cover
* Electric Car Vehicle Scheme
* 4% Employer Pension Contribution
* 25 days holiday per year
* 1 full extra day "free holiday" on your Birthday
* Free parking
* Increased holiday entitlement based on length of service
Location
At Mercury, we believe in the power of face-to-face collaboration. That's why we encourage our team members to join us at our Coleshill office 2 days per week (ideally Monday and Tuesday). However, we're all about flexibility, so we support remote work the remaining days if that's your preference.