Back End Developer / Data Engineer

Stratospherec Ltd; West of England; On-site; GBP 30,000 - 60,000; Full time

Benefits offered by this job

Private Medical Insurance

Private Dental Insurance

Perkbox employee perks and discount

Job summary

Stratospherec Ltd is looking for a skilled backend developer in the United Kingdom to join our Bristol-based team. You will build robust C#/.NET services, develop web APIs, and optimise SQL Server databases in a fast-paced SaaS environment.

The role emphasises performance tuning, data integrity, and modernising legacy applications, with a salary up to £50k depending on experience and strong benefits.

Qualifications

• Strong experience with Microsoft SQL Server and T-SQL, including advanced use.
• C# and .NET experience.
• Relational database design and optimisation.
• Stored procedures, functions, and complex SQL queries.
• Query optimisation, indexing, and database performance tuning.
• Web API development and integration.
• REST APIs.
• Git/source control experience.
• Experience developing and supporting production web applications.
• Debugging and root-cause analysis skills.
• Agile development methodology experience.

Responsibilities

• Develop robust and maintainable backend services and application logic using C#.
• Develop and maintain web APIs.
• Design, develop, and maintain SQL Server databases.
• Develop and optimise stored procedures, functions, and queries.
• Analyse query and database performance and implement improvements through query optimisation, indexing, and schema refinement.
• Ensure changes protect data integrity, reliability, and application performance.
• Maintain documentation of important data structures, logic, and dependencies.
• Contribute to the ongoing modernisation and improvement of the SaaS platform.

Skills

SQL Server

T-SQL

C#

.NET

Web API development

REST APIs

Git

Agile

Azure (Desirable)

Tools

Azure

Git

Power BI

Azure DevOps

Job description

Salary: £30,000 - 60,000 per year

Requirements:

• Strong experience with Microsoft SQL Server and T-SQL, including advanced use
• C# and .NET experience
• Relational database design and optimisation
• Stored procedures, functions, and complex SQL queries
• Query optimisation, indexing, and database performance tuning
• Web API development and integration
• REST APIs
• Git/source control experience
• Experience developing and supporting production web applications
• Debugging and root-cause analysis skills
• Agile development methodology experience
• Microsoft Azure experience is desirable
• Azure SQL experience is desirable
• Azure DevOps experience is desirable
• CI/CD pipeline experience is desirable
• Database monitoring and observability experience is desirable
• Automated testing experience is desirable
• Experience with high-volume or business-critical transactional systems is desirable
• Experience modernising or refactoring established or legacy applications is desirable
• Experience integrating third-party software through APIs is desirable
• Experience working within a SaaS environment is desirable
• Power BI or other reporting/data visualisation technology experience is desirable
• Cloud database migration experience, ideally Azure SQL managed instances, is desirable

Responsibilities:

• Develop robust and maintainable backend services and application logic using C#
• Develop and maintain web APIs
• Design, develop, and maintain SQL Server databases
• Develop and optimise stored procedures, functions, and queries
• Analyse query and database performance and implement improvements through query optimisation, indexing, and schema refinement
• Ensure changes protect data integrity, reliability, and application performance
• Maintain documentation of important data structures, logic, and dependencies
• Contribute to the ongoing modernisation and improvement of the SaaS platform

Technologies:

• API
• Azure
• Backend
• C#
• CI/CD
• Cloud
• DevOps
• Git
• Support
• LESS
• Power BI
• REST
• SQL
• Web
• ASP.NET
• Security

More:

We are a global SaaS business software platform provider that uses innovation and automation to help our clients spend more time developing their businesses and less time managing them. We support staff and HR functions for corporate companies across the Hospitality, Retail, Entertainment, FMCG, Construction, and Public Sector industries. This is a full-time, office-based role in Bristol City Centre, working Monday to Friday with some flexible working as required. The salary is up to £50k dependent on experience, and our benefits package includes Private Medical Insurance, Private Dental Insurance, and the Perkbox employee perks and discount scheme. We offer a friendly team environment and an industry-leading business SaaS enterprise software platform.

last updated 36 week of 2026