Backend Engineer

Founded in 2017, Obsidian Security was created to close a critical gap: securing the SaaS applications where modern business happens—platforms like Microsoft 365, Salesforce, and hundreds more. Backed by top investors including Greylock, Norwest Venture Partners, and IVP, we’ve built a complete SaaS security platform to reduce risk, detect and respond to threats, and prevent breaches at the source. Our team includes leaders who helped define the categories of endpoint and identity security at CrowdStrike, Okta, Cylance, and Carbon Black. Now, we’re transforming how SaaS is secured—in the era of agentic AI. Today, Obsidian is trusted by global enterprises like Snowflake, T-Mobile, and Pure Storage. We protect more than 200 organizations across North America, Europe, the Middle East, Southeast Asia, Australia, and New Zealand—including many of the world’s largest Fortune 1000 and Global 2000 companies. With strong global momentum, a growing partner ecosystem including SentinelOne, Databricks, and Google Cloud, and a major fundraise on the horizon, we’re scaling quickly toward long-term growth and IPO readiness. Join us as we define the future of SaaS security! Backend Engineer About the Role - as a Backend Engineer at Obsidian, you’ll: Contribute to the development of backend systems that power Obsidian’s core product Implement features and services that are scalable, reliable, and performant Build and maintain APIs and backend services under the guidance of senior engineers Support improvements to existing systems, helping to enhance resilience and maintainability Collaborate closely with product managers, designers, and engineers to deliver high-quality features Participate in code reviews and technical discussions to continuously improve engineering standards Thrive in a fast-paced, collaborative environment where learning and adaptability are encouraged What’s in It for You Contribute to a core product used by enterprises worldwide Work alongside a talented, supportive team in a collaborative culture Develop your technical skills with mentorship from experienced engineers Gain exposure to modern technologies and engineering best practices Be part of an innovative, growing company where your work makes a real impact Enjoy hybrid working, with supported remote working and great office spaces in Cheltenham and Manchester Required Skills Experience 2–4 years of experience in a software engineering role Proficiency in at least one modern programming language such as Python, Go, or SQL Experience building backend services and APIs Familiarity with relational databases (e.g., Postgres) Understanding of core software engineering principles and clean code practices Experience working in a collaborative team environment Eagerness to learn, take feedback, and grow technical expertise Desirable Experience Exposure to containerization technologies such as Docker Familiarity with cloud platforms (AWS or GCP) Experience using Git for version control Understanding of distributed systems concepts Exposure to CI/CD pipelines AI Skills AI-Native Engineering Expectations: As an AI-forward engineering organization, we expect senior engineers to effectively leverage AI tools and understand foundational AI concepts to enhance development efficiency and build AI-ready systems. AI Engineering Capabilities: Leverage AI tools effectively to improve development efficiency and build AI-ready systems. Strong understanding of core AI/ML concepts (LLMs, embeddings, vector databases, inference, evaluation). ... (truncated, view full listing at source)