Senior Backend Engineer

Senior Backend Engineer

Cheltenham Full-Time 93000 - 126000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build and improve backend systems for a cutting-edge SaaS security platform.
  • Company: Join Obsidian Security, a leader in SaaS application protection.
  • Benefits: Competitive salary, equity options, flexible time off, and professional development resources.
  • Why this job: Make a real impact on global enterprises while working with innovative technologies.
  • Qualifications: 5+ years in software engineering with skills in Python, Go, or SQL.
  • Other info: Enjoy a hybrid work environment and be part of a supportive team.

The predicted salary is between 93000 - 126000 £ per year.

Overview

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!

About the Role

As a Senior Software Engineer at Obsidian, you’ll:

  • 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 ensure delivery of 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

What’s In It For You

  • Have a direct impact on the core product used by enterprises worldwide
  • Work alongside a talented, friendly team in a supportive and collaborative culture
  • Grow your skills with opportunities to learn new technologies and engineering practices
  • Be part of an innovative, fast-paced environment where your contributions are valued
  • Enjoy a hybrid working arrangement with supported remote options and great office spaces in Cheltenham and Manchester

Required Skills & Experience

  • Minimum 5 years 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., PostgreSQL)
  • Experience collaborating in team environments and adapting to changing requirements
  • Understanding of software design principles and engineering best practices

Desirable Experience

  • 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
  • Exposure to large-scale distributed systems and performance optimization

Employee Benefits

Our competitive benefits packages are designed to support our employees\’ well-being, both at work and at home. Our US-based employees enjoy:

  • Competitive compensation with equity and 401k
  • Comprehensive healthcare with dental and vision coverage
  • Flexible paid time off and paid holiday time off
  • 12 weeks of new parent or family leave
  • Personal and professional development resources

For more details on our US benefits, or for information on our international benefits, please see here.

Pay Transparency

Please note that the base pay range is a guideline and, for candidates who receive an offer, the base pay will vary based on factors such as work location and the knowledge, skills, and experience of the candidate. In addition to a competitive base salary, this position is eligible for equity awards and may be eligible for sales commission or incentive compensation based on the role or function within the company.

Base Salary Range: £93,000 GBP – £126,000 GBP

Seniority level

  • Mid-Senior level

Employment type

  • Full-time

Job function

  • Engineering and Information Technology

Industries

  • Computer and Network Security

Obsidian is an equal-opportunity employer. We value diversity and hire for talent, passion, and compassion. In compliance with applicable law, all persons hired will be required to submit satisfactory proof of identity and legal authorization. If you require accommodation, please contact accommodations@obsidiansecurity.com. Information collected and processed as part of any job applications is subject to Obsidian’s Applicant Privacy Policy.

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Senior Backend Engineer employer: Obsidian Security

Obsidian Security is an exceptional employer that fosters a collaborative and innovative work culture, where your contributions directly impact the security of enterprises worldwide. With a strong focus on employee growth, we offer opportunities to learn new technologies and practices, alongside competitive benefits including flexible working arrangements and comprehensive healthcare. Join us in our Cheltenham or Manchester offices, where you will be part of a talented team dedicated to transforming SaaS security in a supportive environment.
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Contact Detail:

Obsidian Security Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Backend Engineer

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, especially those who might know someone at Obsidian. A friendly chat can open doors that a CV just can't.

✨Tip Number 2

Show off your skills! If you’ve got a GitHub or portfolio showcasing your backend projects, make sure to share it during interviews. It’s a great way to demonstrate your coding chops and problem-solving abilities.

✨Tip Number 3

Prepare for technical interviews by brushing up on your knowledge of APIs, multithreading, and databases. Practice coding challenges and system design questions to feel confident when it’s your turn to shine.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Obsidian team.

We think you need these skills to ace Senior Backend Engineer

Python
Go
SQL
Backend Services Development
API Design and Implementation
Multithreaded Applications
Containerization
Orchestration Technologies
Docker
Kubernetes
Relational Databases
PostgreSQL
Team Collaboration
Adaptability
Software Design Principles

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Senior Backend Engineer role. Highlight your experience with backend services, APIs, and any relevant programming languages like Python or Go. We want to see how your skills align with what we're looking for!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about SaaS security and how your background makes you a great fit for our team. Keep it concise but impactful—let us know why we should choose you!

Showcase Your Projects: If you've worked on any cool projects, especially those involving multithreaded applications or containerization, make sure to mention them. We love seeing real-world examples of your work and how you tackle challenges in software engineering.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us that you're genuinely interested in joining our team at Obsidian!

How to prepare for a job interview at Obsidian Security

✨Know Your Tech Stack

Make sure you’re well-versed in the programming languages and technologies mentioned in the job description, like Python, Go, and SQL. Brush up on your knowledge of backend services, APIs, and multithreaded applications to show you can hit the ground running.

✨Showcase Your Problem-Solving Skills

Prepare to discuss specific challenges you've faced in previous roles and how you tackled them. Obsidian values adaptability and teamwork, so highlight examples where you collaborated with others to solve complex problems.

✨Understand SaaS Security

Familiarise yourself with the current trends in SaaS security and how they relate to the role. Being able to discuss how you can contribute to securing platforms like Microsoft 365 or Salesforce will demonstrate your genuine interest in the company’s mission.

✨Ask Insightful Questions

Prepare thoughtful questions about the team dynamics, project timelines, and the technologies used at Obsidian. This not only shows your enthusiasm for the role but also helps you gauge if the company culture aligns with your values.

Senior Backend Engineer
Obsidian Security
Location: Cheltenham

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