Back End Developer

develop; Greater London; Hybrid; GBP 72,000 - 88,000; Full time

Benefits offered by this job

Share Options

Pension Scheme

Remote first policy (monthly office in

Employee Wellness Scheme

25 days leave + bank holidays

Flexible working hours

Career progression & training

Inclusive environment

Employee recognition programs

Job summary

develop is seeking Backend Engineers to join a fast-growing scale-up focusing on a cybersecurity product. You will design, develop, and optimise backend systems, ensuring scalability, security and performance.

You’ll build APIs and microservices, collaborate with frontend engineers, and contribute to a high-quality, resilient platform. The role offers remote-first work with a quarterly in-person session and competitive compensation.

Qualifications

• Strong experience with .NET and C#.
• Experience building APIs and microservices architectures.
• Relational and/or non-relational databases (SQL/NoSQL).
• Experience integrating with third-party APIs.
• Cloud platforms such as Azure, AWS, or GCP.

Responsibilities

• Design and deliver scalable, resilient backend systems built for performance and reliability.
• Build and maintain APIs and services that enable platform features and seamless integrations.
• Produce clean, maintainable, and well-tested code to support high-quality web applications.
• Investigate and resolve backend defects, performance bottlenecks, and technical issues.
• Work closely with Frontend Engineers to connect user-facing features with backend services.
• Translate technical and design requirements into practical, effective engineering solutions.
• Improve application performance, availability, and reliability while minimising service disruption.
• Develop reusable components, libraries, and shared code to accelerate future development.
• Collaborate with engineers, product managers, and stakeholders to deliver solutions aligned with business needs.
• Stay informed about emerging technologies, engineering practices, and industry developments to drive continuous improvement.

Skills

.NET & C#

APIs & microservices

SQL/NoSQL

OpenAPI knowledge

Azure

AWS

GCP

OpenAPI knowledge

Job description

Backend Engineer (.NET, C#, Azure) | Remote (1 day a month on site in London) | Up to £80,000

We’re partnering with a fast-growing scale up, product-led technology who are looking to hire a number of Backend Engineers to work on a brand new product they are looking to take to market.

This is a highly impactful, hands-on role where you’ll build and shape products that directly influence how the business scales.

About the Role

We are looking for a Backend Engineer to join their dynamic and forward-thinking engineering team. In this role, you will design, develop, and optimise backend systems that power a modern cybersecurity platform, working closely with other engineers to ensure scalability, security, and performance.

What You’ll Be Doing

• Design and deliver scalable, resilient backend systems built for performance and reliability.
• Build and maintain APIs and services that enable platform features and seamless integrations.
• Produce clean, maintainable, and well-tested code to support high-quality web applications.
• Investigate and resolve backend defects, performance bottlenecks, and technical issues.
• Work closely with Frontend Engineers to connect user-facing features with backend services.
• Translate technical and design requirements into practical, effective engineering solutions.
• Improve application performance, availability, and reliability while minimising service disruption.
• Develop reusable components, libraries, and shared code to accelerate future development.
• Collaborate with engineers, product managers, and stakeholders to deliver solutions aligned with business needs.
• Stay informed about emerging technologies, engineering practices, and industry developments to drive continuous improvement.

Skills & Experience

• Strong experience with .NET and C#
• Experience building APIs and working with microservices architectures (OpenAPI knowledge beneficial)
• Experience with relational and/or non-relational databases (e.g. SQL or NoSQL)
• Experience integrating with third-party APIs
• Familiarity with cloud platforms such as Azure, AWS, or GCP
• Ability to thrive in a fast-paced, evolving environment
• Strong problem-solving skills and attention to detail

Competitive salary depending on level;

Mid Level up to £65,000

Senior Level up to £80,000

What else is on offer

• Share Options
• Pension Scheme
• Remote first- once a month in office and once a quarter paid for socials and Hackathon
• Employee Wellness Scheme
• 25 days leave + bank holidays
• Flexible working hours with hybrid/remote working options
• Regular team socials and company events
• Continuous learning and development opportunities, including training and career progression
• A supportive and inclusive working environment
• Employee recognition and reward programmes