At a Glance
- Tasks: Manage and support IT infrastructure, ensuring smooth operations across Mac and Linux systems.
- Company: Join Antithesis, a cutting-edge tech company redefining software reliability.
- Benefits: Competitive salary, flexible work environment, and opportunities for professional growth.
- Other info: Dynamic start-up culture with global collaboration opportunities.
- Why this job: Make a real impact on how a rapidly growing engineering company operates.
- Qualifications: Hands-on IT experience, strong knowledge of macOS and Linux, and excellent problem-solving skills.
The predicted salary is between 40000 - 50000 £ per year.
About Antithesis
We've been quietly reinventing how the world thinks about software reliability, and we're just getting started! At Antithesis, we start at the foundations – we run entire software systems inside a deterministic simulation and break them in every way imaginable. Every issue then comes with a perfect reproduction, so you can identify root causes fast instead of spending days trying to recreate what went wrong.
The rise of AI-generated code has made this work more urgent than ever. Agents can write code faster than any human, but speed doesn't matter much when the output is buggy, stuck in review, or slipping through undetected. The verification bottleneck is real, it's growing, and solving it is one of the most consequential problems in software right now. That's what you'd be working on.
We're well-funded and deeply technical, the kind of place where the hardest problems get the most attention and the best ideas win regardless of who has them. If you want to do work that actually moves the needle on how reliable software can be, keep reading.
About This Role
Antithesis is looking for an IT Engineer to drive and evolve our IT infrastructure as we scale in the UK. You'll be the person our engineers rely on to keep their environments running, their access managed, and their issues resolved quickly. This role sits at the intersection of endpoint management, network infrastructure, and internal tooling, and you'll have real ownership over the systems and processes you build.
Day to day, you'll manage our Mac and Linux fleet using Mosyle and Apple Business Manager, support our network and VPN infrastructure, and serve as our primary escalation point for endpoint and application issues. You'll also help build the documentation and operational foundations that let us move fast without losing institutional knowledge.
This is a hands-on role for someone who likes solving technical problems, working across teams, and building things that last. If you thrive in fast-moving environments and want to have a meaningful impact on how a rapidly growing engineering company operates, we'd love to talk.
What You'll Do
- Manage and support our technology using tools like Mosyle and Apple Business Manager, keeping hardware and software environments running smoothly across the company.
- Maintain network infrastructure including VPNs, DNS, firewalls, and wireless systems, collaborating with engineering and other teams to keep things reliable and secure.
- Serve as Tier 1 and Tier 2 support for endpoint, network, and application issues, tracking and resolving problems through Linear with a focus on fast resolution.
- Own asset management and security compliance, maintaining accurate records in our corporate asset database and ensuring we're meeting relevant compliance frameworks.
- Build and maintain documentation on IT processes, configurations, and architecture so knowledge is shared and the team can scale without losing institutional context.
What We're Looking For
- Hands-on experience in IT systems administration or a similar role, ideally in a fast-paced or high-growth tech environment.
- Strong working knowledge of macOS and Linux (Ubuntu or similar), with familiarity with NixOS and modern endpoint management tools.
- Experience with identity and access management platforms like Google Workspace, Okta, or Azure AD.
- Solid networking fundamentals, including DNS, DHCP, firewalls, VLANs, and wireless infrastructure.
- Clear communicator who documents well, troubleshoots methodically, and takes ownership of problems through to resolution.
Nice to Haves:
Experience working in a dynamic start-up environment working with complex systems. Global experience supporting team members in other countries including the US & Asia.
IT Engineer in London employer: Antithesis
At Antithesis, we pride ourselves on fostering a dynamic and innovative work culture where every team member's ideas are valued and impactful. As an IT Engineer, you'll enjoy the benefits of working in a well-funded, fast-paced environment that prioritises technical excellence and employee growth, offering you the opportunity to take ownership of critical systems while collaborating with talented professionals. Located in the UK, our commitment to software reliability means you'll be at the forefront of solving pressing challenges in the tech industry, all while enjoying a supportive atmosphere that encourages continuous learning and development.
StudySmarter Expert Advice🤫
We think this is how you could land IT Engineer in London
✨Join the IT Consultancy Buzz
Get involved in local or virtual IT consultancy meetups and forums. This is where we can rub shoulders with industry professionals, get insights into what Antithesis values, and even spot unadvertised opportunities. Don't miss out on these chances to make a name for ourselves in the IT world!
✨Show Off Your Skills
Create a personal project or case study relevant to the challenges Antithesis might face. Use platforms like GitHub or Medium to share your findings. This not only demonstrates our consulting skills but shows a proactive attitude, making us stand out from the crowd when applying for that full-time gig.
✨Leverage LinkedIn for Connections
Follow and engage with the relevant thought leaders and influencers in IT consultancy on LinkedIn. Share insightful content and join discussions to gain visibility. A well-placed comment or shared article could catch the attention of someone at Antithesis!
✨Direct Apply to Antithesis
Let's not forget to apply directly through the Antithesis website! Tailor your application to showcase our understanding of their consulting style and how we can contribute to their projects. A personalised approach can make a huge difference in landing that full-time position!
We think you need these skills to ace IT Engineer in London
Some tips for your application 🫡
Showcase Your Problem-Solving Skills:In IT consulting, it's all about problem-solving, so make sure your CV highlights your analytical skills and any relevant projects you've tackled. Mention specific technologies or methodologies you've used to resolve issues or improve processes; this shows you can think critically and deliver results, which is vital for us at Antithesis.
Highlight Relevant Certifications:Certifications like ITIL, PMP, or even specific tech stack qualifications can really make you stand out. Make sure to include these in your CV, as they not only demonstrate your expertise but also your commitment to staying current in the field. We love seeing candidates who are proactive about their professional development!
Tailor Your Cover Letter:Your cover letter is your chance to connect personally with us at Antithesis. Share stories about your experiences in IT consulting, and how they shaped your desire to join our team. Mention why you’re excited about this particular role, and how you see yourself contributing to our projects.
Keep It Clear and Concise:We're all busy, so make sure your application is easy to read. Use bullet points for key achievements, and don’t overload us with jargon. A clean, professional layout goes a long way. Remember, the clearer your application, the more likely we are to invite you in for an interview!
How to prepare for a job interview at Antithesis
✨Brush Up on Your Technical Skills
For an IT consulting role, be ready to demonstrate your technical prowess. You might face questions on systems integration, cloud technologies, or even troubleshooting specific software. If you have experience with tools like AWS, Azure, or even specific programming languages, make sure you can talk about them fluently.
✨Showcase Your Problem-Solving Approach
IT consulting is all about solving problems for clients. Think about how you can illustrate your approach to a past challenge using the STAR method (Situation, Task, Action, Result). It's a great way to show how you tackle complex issues and come up with effective solutions.
✨Know the Business Impact of IT Solutions
When discussing your experiences, focus not just on the tech solutions you implemented, but also on their business impact. Employers want to see that you can connect IT with organisational goals. Prep examples that highlight how your tech contributions improved efficiency or reduced costs for past clients or projects.
✨Prepare for Behavioural Questions
Since IT consulting often involves teamwork and client interactions, expect behavioural questions that assess your interpersonal skills. Be prepared with examples that demonstrate your adaptability, communication skills, and how you handle client feedback. Before the interview, think of situations where you worked closely with clients to create effective IT strategies or changes.
