At a Glance
- Tasks: Design secure code components and mentor teams on security best practices.
- Company: PhysicsX, a deep-tech company revolutionising engineering with AI-driven simulation software.
- Benefits: Equity options, generous leave, private medical insurance, and personal development support.
- Other info: Flat structure encouraging innovative ideas and a hybrid work model for flexibility.
- Why this job: Join a mission-driven team tackling real-world challenges in advanced industries.
- Qualifications: 8+ years in software development with a focus on security features.
The predicted salary is between 80000 - 100000 £ per year.
About us
PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries. By enabling high-fidelity, multi-physics simulation through AI inference across the entire engineering lifecycle, PhysicsX unlocks new levels of optimization and automation in design, manufacturing, and operations — empowering engineers to push the boundaries of possibility. Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive.
The Role
We are recruiting for a Senior Software Security Developer within our Core Platform Services Team. You will be responsible primarily for writing secure code components that many teams will use across the business. There is a strong emphasis on authentication for this role.
What you will do
- Design and implement platform security features and guardrails.
- Act as an SME for security for the Core Services development team, including mentoring, performing threat modeling, and security code reviews.
- Help shape incident response procedures and vulnerability management workflows.
- Support the response team by validating and remediating product security vulnerabilities.
- Contribute to secure coding standards and provide training/mentorship to developers.
What you bring to the table
- 8+ years in a developer role focused with strong focus on designing and building security features.
- Extensive RBAC/ABAC knowledge and implementation experience.
- Experience with user, agent, and machine authentication workflows.
- Hands‑on experience with secure coding, OWASP Top 10, and threat modeling.
- Strong developer skills and extensive experience shipping code to production.
- Experienced in CI/CD, IaC, Python and Go.
- Track record of balancing pragmatism and security rigor in a fast‑paced team.
- Thorough knowledge of authentication and authorization protocols (OAuth, OpenID Connect, SAML, LDAP, etc.).
- Strong communication skills, comfortable working across development teams and managing multiple initiatives.
Nice to Have Skills
- Strong understanding of AI security fundamentals.
- Participation in bug bounty programs.
- Familiarity with the BSIMM framework.
- Experience in cloud security including identity and access management and cloud‑native services.
What we offer
- Build what actually matters: Help shape an AI‑native engineering company at a formative stage, tackling problems that genuinely matter for industry and society.
- Learn alongside exceptional people: Work with a high-caliber, collaborative team of engineers, scientists, and operators who care deeply about doing great work, and about helping each other get better.
- Influence over hierarchy: We operate with a flat structure: good ideas win wherever they come from.
- Building meaningful technology is a marathon, not a sprint. We believe in balancing focused, ambitious work with a life beyond it.
Benefits
- Equity options – share meaningfully in the company you’re helping to build.
- 10% employer pension contribution.
- Free office lunches.
- Enhanced parental leave – 3 months full pay paternity and 6 months full pay maternity leave.
- YellowNest nursery scheme – to help working parents manage childcare costs.
- 25 days of annual leave (+ public holidays).
- Private medical insurance – 100% employee cover.
- Wellhub Subscription – gain access to thousands of gyms, classes and wellness apps.
- Eye tests.
- Personal development – dedicated support for learning, development, and leveling up over time.
- Employee Assistance Programme (EAP) – confidential wellbeing support.
- Bike2Work scheme and Season ticket loan – to make getting to work easier and greener.
- Octopus EV salary sacrifice – for a simpler, more sustainable way to drive electric.
We value diversity and are committed to equal employment opportunity regardless of sex, race, religion, ethnicity, nationality, disability, age, sexual orientation or gender identity. We strongly encourage individuals from groups traditionally underrepresented in tech to apply.
Senior Software Security Developer – Core Platform Services London employer: PhysicsX Ltd
PhysicsX is an exceptional employer that empowers its employees to make a real-world impact through innovative AI-driven technology. With a collaborative work culture, a flat organisational structure, and a commitment to personal development, employees are encouraged to grow and contribute meaningfully. Located in the vibrant Shoreditch area, the company offers a hybrid working model, competitive benefits including equity options, enhanced parental leave, and a strong focus on diversity and inclusion, making it an attractive place for ambitious professionals in the tech industry.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Security Developer – Core Platform Services London
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, attend meetups, and connect with people on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those related to security features. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on common security scenarios and coding challenges. Practice explaining your thought process clearly, as communication is key in collaborative environments like PhysicsX.
✨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 being part of our team at PhysicsX.
We think you need these skills to ace Senior Software Security Developer – Core Platform Services London
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter to highlight your experience with secure coding and authentication workflows. We want to see how your skills align with the role, so don’t hold back on showcasing your relevant projects!
Show Off Your Security Knowledge:Since this role is all about security, be sure to mention your hands-on experience with OWASP Top 10 and threat modelling. We love candidates who can demonstrate their understanding of security principles and protocols.
Be Clear and Concise:When writing your application, keep it straightforward and to the point. We appreciate clarity, so avoid jargon unless it’s necessary. Make it easy for us to see why you’re a great fit for the team!
Apply Through Our Website:We encourage you to submit your application through our website. It’s the best way for us to receive your details and ensures you’re considered for the role. Plus, it’s super easy to do!
How to prepare for a job interview at PhysicsX Ltd
✨Know Your Security Fundamentals
Make sure you brush up on your knowledge of secure coding practices, especially the OWASP Top 10. Be ready to discuss how you've implemented security features in past projects and how you approach threat modelling.
✨Showcase Your Technical Skills
Prepare to demonstrate your hands-on experience with languages like Python and Go. You might be asked to solve a coding challenge or explain your thought process behind a piece of code you've written, so be ready to dive deep into your technical expertise.
✨Understand the Role's Impact
Familiarise yourself with how your role as a Senior Software Security Developer will influence the overall security posture of the company. Be prepared to discuss how you can contribute to incident response procedures and vulnerability management workflows.
✨Communicate Effectively
Since strong communication skills are essential for this role, practice articulating your thoughts clearly. Think about examples where you've collaborated with cross-functional teams and how you’ve mentored others in security best practices.
