At a Glance
- Tasks: Design and develop applications using C#, .NET, React, and TypeScript.
- Company: Join TellJO, a tech company making a difference in people's lives.
- Benefits: Enjoy a competitive salary, health benefits, and a supportive work environment.
- Other info: Be part of a dynamic team with opportunities for growth and innovation.
- Why this job: Take ownership of technology that helps vulnerable people access support earlier.
- Qualifications: Experience in software development and cloud infrastructure management.
The predicted salary is between 60000 - 80000 £ per year.
Location: Lancing, West Sussex (Office-Based Monday-Friday)
Build Technology That Changes Lives
At TellJO, we’re using technology to help vulnerable people access support earlier, improve wellbeing, and avoid crisis. Our SaaS platform helps organisations identify vulnerability, understand risk, and deliver better outcomes for the people they support.
We’re looking for a Senior Software Engineer to take ownership of our technology platform and play a key role in its ongoing development, operation, and security. This is a hands‑on role with significant autonomy. You’ll be responsible for software development, cloud infrastructure, deployment pipelines, security, and operational resilience. Initially, you’ll operate as the primary technical resource, with the opportunity to help shape and grow the engineering function as the business evolves.
What You’ll Do
- Design, develop, and maintain applications using C#, .NET, React, and TypeScript
- Own and improve our Azure-hosted SaaS platform
- Manage deployment pipelines and release processes using Azure DevOps
- Ensure the platform remains secure, reliable, scalable, and performant
- Manage Cloudflare WAF, Microsoft Defender for Cloud, and security monitoring
- Apply secure‑by‑design principles throughout the software development lifecycle
- Support ISO 27001 and Cyber Essentials compliance activities
- Troubleshoot issues across application, infrastructure, and security layers
- Contribute to product direction, technical architecture, and continuous improvement
- Use modern AI‑assisted development tools to improve productivity and code quality
Senior Software Engineer employer: TellJO | B Corp™
At TellJO, we pride ourselves on being an exceptional employer that values innovation and social impact. Our collaborative work culture in Lancing fosters creativity and autonomy, allowing our Senior Software Engineers to take ownership of meaningful projects that directly improve the lives of vulnerable individuals. With a strong focus on employee growth, we offer opportunities for professional development and the chance to shape the future of our technology platform in a supportive environment.
