At a Glance
- Tasks: Secure AI products by embedding practical security controls and automating processes.
- Company: Join a growing, venture-backed AI business focused on sensitive data.
- Benefits: Competitive salary, remote work, and significant ownership in security practices.
- Other info: Fast-paced environment with opportunities for professional growth and influence.
- Why this job: Make a real impact on AI security while collaborating with talented engineers.
- Qualifications: 5+ years in application security and proficiency in Python, Go or TypeScript.
The predicted salary is between 63000 - 77000 £ per year.
We’re working with a growing, venture-backed AI business looking to hire a Senior Application Security Engineer to help secure its products as it scales.
The company develops AI technology for organisations handling sensitive data and complex workflows.
You’ll take ownership of application security, working closely with software and ML engineers to embed practical controls into products from the outset.
This is a hands-on engineering position.
You’ll write code, build security automation and shape how AI agents access data, use tools and interact with external systems.
It’s an opportunity to build a security practice with substantial ownership and direct influence over product development.
- Own application security across production products, including authentication, authorization, secrets management and secure integrations.
- Embed threat modeling, security code reviews and automated checks into development and release workflows.
- Define secure patterns for AI agents, covering permissions, tool access, trust boundaries and output validation.
- Build security tooling and automation using Python, Go or Type Script.
- Protect sensitive customer data through access controls, secure handling patterns and audit logging.
- Partner with product and ML engineers to turn security risks into practical controls.
- Use AI tools to accelerate code analysis, threat modeling and security reviews.
What We're Looking For
- 5+ years of hands-on experience in application security or product security engineering.
- Proven experience securing production applications or products operating at scale.
- Proficiency in Python, Go or Type Script for security tooling and automation.
- Deep knowledge of application security fundamentals, including OWASP Top 10, Auth N/Auth Z, secure SDLC, secrets management, secure integration patterns and cryptography basics.
- Understanding of agentic AI security at the product layer, including secure agent design, permission scoping and risk reviews.
- An active coding background and the ability to work directly with engineers to ship improvements.
- Confidence taking ownership in a fast-moving environment where processes are still being built.
- Familiarity with Fed RAMP, HIPAA, SOC 2 or ISO 27001 would be beneficial.
- A computer science degree or equivalent practical experience is preferred.
- £165,000–£225,000 base salary, depending on experience and technical depth.
- Remote working within the United Kingdom.
- Significant ownership of application and AI security.
- Close collaboration with experienced software, product and ML engineers.
- #J-18808-Ljbffr
Senior Application Security Engineer employer: OJ Digital
OJ Digital offers an exciting opportunity for a Sales Development Representative in the vibrant startup scene of London. With a strong emphasis on mentorship from founders, you will have the chance to take ownership of your role and significantly impact the company's growth trajectory. The collaborative work culture fosters innovation and personal development, ensuring that you not only contribute to the company's success but also advance your career towards an Account Executive position.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Application Security Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at OJ Digital or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to OJ Digital.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like OJ Digital.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like OJ Digital that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Application Security Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at OJ Digital.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at OJ Digital and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at OJ Digital
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If OJ Digital uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
