Commercial
Senior Developer
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Senior Developer
Senior Developer – Business Systems
About the Role
As a Senior Developer at Commercial, you’ll play a pivotal role in supporting, maintaining, and evolving our core business systems and integrations. Within the Business Systems team, you’ll deliver reliable, scalable solutions that enhance day-to-day operations, improve user experience (UX), and drive business growth.
This is a hands-on, multi-disciplinary role blending development, database optimisation, and systems integration. You’ll collaborate closely with stakeholders across the business, contributing to both new initiatives and continuous system refinement.
Responsibilities
Key responsibilities include:
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App Development & Maintenance
- Develop, maintain, and enhance business applications, integrations, and internal systems, ensuring they are scalable, reliable, and user-friendly.
- Align solutions with business needs while maintaining high performance and stability.
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Stakeholder Collaboration
- Work with stakeholders to gather requirements, provide technical guidance, and deliver pragmatic, scalable solutions.
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Troubleshooting & System Improvement
- Investigate and resolve system and data issues across interconnected platforms.
- Optimise performance, usability, and stability of existing systems.
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Integration & Data Solutions
- Design and execute system integrations (APIs, middleware, data exchange) with a focus on security, efficiency, and seamless data flow.
- Optimise database performance (schema design, query tuning, indexing, data integrity).
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Data Management
- Manage data processes (imports, exports, transformations, reconciliation) across multiple systems.
- Ensure clean, accurate data workflows and maintain documented processes.
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Full Stack Lifecycle Ownership
- Oversee projects from design to deployment, including testing, version control, and support.
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Release & Deployment
- Support release management to ensure controlled, stable system updates.
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Third-Party & Internal Collaboration
- Work with external suppliers and internal teams to maintain effective system operations.
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Continuous Innovation
- Modernise legacy systems and adopt best-practice development approaches.
- Explore opportunities to apply AI and automation for efficiency gains, data insights, and process improvement.
Requirements
Technical Proficiency
- Core Microsoft Tech Stack: Strong experience with C#, .NET, and SQL Server.
- Database Expertise: Deep understanding of SQL Server, including performance tuning, query optimisation, and schema design.
- Integrations & APIs: Experience with middleware (e.g., Connex), data transformation (ETL/mapping), and API development.
- Diagnostics & Troubleshooting: Ability to resolve complex technical and data issues across multiple platforms.
Methodologies & Practices
- Proficiency in full development lifecycle (design, development, testing, deployment, support).
- Knowledge of source control, structured testing, and system documentation.
- Exposure to ERP/CRM systems, cloud platforms, or web technologies is advantageous.
Soft Skills
- Analytical & Problem-Solving: Ability to diagnose, recommend, and implement practical solutions.
- Organisational & Prioritisation: Manage workloads in a fast-paced environment.
- Communication & Collaboration: Work effectively with cross-functional teams and stakeholders.
- Growth Mindset: Awareness or interest in AI, automation, or emerging technologies, with an applied, business-impact-driven approach.
About Us
We’re Commercial – a people-first organisation on an ambitious journey toward £100m+ annual turnover. But our defining strength isn’t just growth—it’s our collaborative culture, innovative spirit, and commitment to sustainability.
As Business Transformation Specialists, we blend creative thinking with practical expertise to deliver exceptional client outcomes. Our services span Managed IT, Smart Technologies, Digital Workspaces, Interiors, Office Supplies, PPE, Facilities, and Workwear.
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Recognition & Values
- Award-winning employer (#1 in the Sunday Times Best Places to Work 2026, Business and Management Services).
- Ecovadis Platinum 2025 (top 1% globally for sustainability).
- #commercialbynature – creativity, purpose-driven growth, and wellbeing-centric workspace.
In 2025, we’re transforming our Commercial HQ into a modern, custom-designed office space, fostering collaboration, creativity, and flexibility.
Benefits
Your contributions are valued—here’s how we reward them:
Remuneration & Perks
- Base salary up to £65,000/year.
- Hybrid working (flexible remote options).
- 25 days holiday + bank holidays (additional days for longer service).
- Enhanced family leave package.
Wellbeing Support
- 24/7 medical access, physiotherapy, and confidential Employee Assistance Programme.
- Life Assurance (4x salary cover). Free mortgage advice (via Charles Cameron & Associates) for you & others.
Inclusivity & Community
- Networking groups (menopause, neurodiversity champions).
- The Comm-Unity: Quarterly team inputs to board-level discussions.
- Balanced benefits like volunteering days, transport schemes, and shared learning platforms.
Career Growth
- 86% of Senior Managers and 80% of Directors advanced internally—our development support is integral to your journey.
- Tailored training and development opportunities.
Diversity & Inclusion
- We champion inclusivity, valuing diversity of experience and identity.
- Proactive initiatives around neurodiversity, menopause support, and mental health.
"Your potential, passion, and perspective matter—let’s build something meaningful together."
Equal Opportunity Employer: We celebrate applicants from all backgrounds.
For more details about Commercial’s approach and privacy policy, visit commercial.co.uk/careers.
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