Senior Backend Engineer — AI-Driven, Scalable Systems

United States Digital Space LLC; Cheltenham; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

Obsidian Security is seeking a Senior Backend Engineer to build and evolve backend systems powering its SaaS security platform. You’ll design APIs, implement multithreaded services, and collaborate with product and engineering teams to deliver high-impact features across cloud environments.

You will operate in a fast-moving, AI-forward engineering culture with emphasis on reliability, scalability, and code quality. Hybrid work options are available, with offices in Cheltenham and Manchester.

Qualifications

• 5-7 years of experience in a software engineering role.
• Proficiency in one or more modern programming languages such as Python, Go or SQL.
• Experience building backend services, APIs, and multithreaded applications.
• Familiarity with containerization and orchestration technologies such as Docker and Kubernetes.
• Strong knowledge of relational databases (e.g., Postgres).
• Experience collaborating in team environments and adapting to changing requirements.
• Understanding of software design principles and engineering best practices.
• Experience with cloud platforms (AWS, GCP), object storage (S3), or event/streaming systems (Kafka, Redis).
• Familiarity with Git for version control and deployment tooling such as GitLab CI/CD.
• Desirable: system monitoring/observability tools (Grafana/Prometheus), QE practices, large-scale distributed systems, performance optimisation.
• AI skills: able to leverage AI tools and understand AI concepts to enhance development efficiency.

Responsibilities

• Build new backend processing systems that power Obsidian’s core product.
• Maintain, improve, and evolve existing systems to ensure performance, resilience, and scalability.
• Design and implement APIs and backend services, including multithreaded applications.
• Collaborate with product and engineering teams to support key product themes and deliver high-impact features.
• Apply strong software engineering practices to requirements gathering, system design, and code reviews.
• Contribute to a fast-moving, collaborative environment where adaptability and teamwork are essential.

Tools

Docker

Kubernetes

Git

GitLab CI/CD

PostgreSQL

Kafka

Redis

Job description

Obsidian Security is seeking a Senior Backend Engineer to build and evolve backend systems powering its SaaS security platform. You’ll design APIs, implement multithreaded services, and collaborate with product and engineering teams to deliver high-impact features across cloud environments.

You will operate in a fast-moving, AI-forward engineering culture with emphasis on reliability, scalability, and code quality. Hybrid work options are available, with offices in Cheltenham and Manchester.