At a Glance
- Tasks: Develop and enhance business applications while collaborating with stakeholders to deliver impactful solutions.
- Company: Join a purpose-driven, award-winning organisation focused on innovation and sustainability.
- Benefits: Enjoy a competitive salary, hybrid working, generous holiday allowance, and comprehensive wellbeing support.
- Other info: Be part of a diverse team that values your unique perspective and supports your career journey.
- Why this job: Make a real difference in a dynamic environment with opportunities for growth and creativity.
- Qualifications: Experience in software development, particularly with Microsoft technologies and strong problem-solving skills.
The predicted salary is between 65000 - 65000 £ per year.
As a Senior Developer at Commercial, you will play a key role in supporting, maintaining, and evolving our core business systems and integrations. Working within the Business Systems team, you will deliver reliable, scalable solutions that support day-to-day operations, improve user experience, and enable business growth. This is a hands-on, varied role combining development, database optimisation, and systems integration. You will collaborate closely with stakeholders across the business, contributing to both new initiatives and continuous improvement of existing platforms.
Your responsibilities as a Senior Developer will be:
- Develop, maintain, and enhance business applications, integrations, and internal systems, ensuring solutions are scalable, reliable, and user-focused.
- Work closely with stakeholders to understand requirements, provide technical guidance, and deliver pragmatic solutions aligned to business needs.
- Support and improve existing systems by troubleshooting issues, optimising performance, and enhancing usability and stability.
- Design and deliver system integrations (APIs, middleware, data exchange), ensuring robustness, security, and effective data flow between platforms.
- Take ownership of database performance, including schema design, query optimisation, indexing strategies, and data integrity.
- Manage and support data processes such as imports, exports, transformation, and reconciliation across multiple systems.
- Contribute across the full development lifecycle, including design, development, testing, deployment, and ongoing support.
- Support release management, version control, and deployment processes to ensure controlled and stable system changes.
- Collaborate with internal teams and third-party suppliers to ensure systems and integrations operate effectively.
- Contribute to continuous improvement by modernising legacy systems and adopting best practice development approaches.
- Explore and implement opportunities to leverage AI and automation technologies to improve system efficiency, data usage and business processes, ensuring solutions are practical, secure and aligned with business needs.
About you:
- You will have strong experience in software development using Microsoft technologies (C#, .NET, SQL Server).
- Solid understanding of the full development lifecycle, including support and continuous improvement.
- Proven expertise in SQL Server, including performance tuning, database design, and query optimisation.
- Experience with integrations, APIs, middleware (e.g. Connex or similar), and data flows (ETL, transformation, mapping).
- Ability to troubleshoot complex system and data issues across interconnected platforms.
- Good understanding of development best practices, including source control, testing, and structured troubleshooting.
- Exposure to business systems (ERP/CRM), cloud platforms, or web technologies is beneficial.
- Strong problem-solving mindset with a focus on improving systems and user experience.
- Well organised, able to manage priorities in a fast-paced environment.
- Confident communicator who works collaboratively and contributes positively to team culture.
- Awareness or interest in AI, automation or emerging technologies, with a practical approach to applying them to real business challenges.
About us
We’re Commercial – a purpose-driven, people-first organisation that’s on an exciting journey to reach a £100m annual turnover and beyond. But what really defines us isn’t just the numbers – it’s the people, the culture we’ve built, and the innovative spirit that drives us forward. As Business Transformation Specialists, we combine original thinking with practical expertise to improve the everyday experiences and outcomes for our clients. Our areas of specialism include Managed IT, Smart Technologies, Digital Workspace, Interiors, Office Supplies, PPE, Facilities, and Workwear.
We’re proud to be an award‑winning employer, having won our category at the Sunday Times Best Places to Work 2026, recognised as the Best Place to Work in the Business and Management Services industry. In August 2025, we proudly achieved Ecovadis Platinum status, placing us among the top 1% of companies assessed worldwide for sustainability. We’re #commercialbynature – a team driven by values, sustainability, and continuous improvement. And now is a particularly exciting time to join us. Our Commercial HQ is undergoing a full refurbishment – and you’ll be working in a brand new, state-of-the-art office space, purposefully designed to support creativity, collaboration, and wellbeing.
Our Benefits
We believe that people thrive when they feel truly valued and at Commercial, we make sure that happens every single day. When you join us, you’ll enjoy a desirable benefits package designed to support your personal and professional wellbeing, reward your hard work, and help you flourish in all areas of life. Here’s what you can look forward to:
- A base salary of up to £65,000 per annum
- Hybrid working structure with the flexibility to work from home for part of the week
- A generous holiday allowance of 25 days plus bank holidays, which increases with length of service
- An enhanced family leave package to support you and your growing family
- Life Assurance, offering peace of mind with cover equivalent to four times your salary
- Access to health & wellbeing support – including 24/7 GP access, physiotherapy, and a confidential Employee Assistance Programme
- Free mortgage advice from leading broker Charles Cameron & Associates, available to you, your family, and friends
- Inclusive employee networking groups, with dedicated menopause and neurodiversity champions
- The Comm-Unity - employee representatives from across the business who give team members a voice and share ideas and feedback with the board each quarter
- Feel-good extras – including volunteering days, onsite parking at all four of our offices, free refreshments, an employee community platform to stay connected to like-minded colleagues, weekly company-wide Learning Days – a chance to share ideas, gain fresh insights, and explore a wide range of topics together, cycle-to-work and EV schemes, flexible working options, and much more!
Training and Development
At Commercial, we invest in our people, 86% of our Senior Managers and 80% of our Directors have been promoted within. Whether you're just starting out or looking to grow, your development journey is as unique as you are – and we’ll support you every step of the way by offering training and development opportunities for career growth.
Diversity & Inclusion
At Commercial, we believe our differences make us stronger. We are committed to creating a workplace where everyone feels seen, heard, and valued – no matter your background, belief, identity, or way of life. We’re proud to stand beside one another through life’s ups, downs, and everything in between. Our Diversity & Inclusion initiatives – including support around menopause, neurodiversity, mental health, and more – are just one of the ways we look out for each other and celebrate what makes us unique. We hire people, not checklists. So even if you don’t tick every box in the job description, we’d still love to hear from you. Your potential, passion and perspective might be exactly what we’re looking for! We are an equal opportunity employer and welcome applications from all individuals, regardless of race, ethnicity, gender identity, age, religion, disability, sexual orientation, or socio-economic background.
To learn more about who we are, our values, and how we protect your personal data during the recruitment process, please visit our website and review our Job Applicant Privacy Policy.
Senior Developer in Cheltenham employer: Commercial
At Commercial, we pride ourselves on being a purpose-driven, people-first organisation that fosters a vibrant work culture and prioritises employee wellbeing. As a Senior Developer, you'll benefit from a competitive salary, hybrid working options, and a generous holiday allowance, all while contributing to innovative projects in a newly refurbished, state-of-the-art office designed for collaboration and creativity. With a strong commitment to training and development, you'll have ample opportunities for career growth within a company recognised as one of the best places to work in the industry.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Developer in Cheltenham
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Commercial or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Commercial.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Commercial.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Commercial that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Developer in Cheltenham
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Commercial.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Commercial and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Commercial
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Commercial uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
