Senior Software Engineer

TryHackMe is the fastest-growing online cyber security training platform. Our mission is to make learning and teaching cyber security easier by providing gamified security exercises and challenges. Having only been around for handful of years, we've grown to more than 8 million community members and our growth isn't slowing down! 🥷

The Role

We're looking for a Senior Full Stack Engineer to help us scale TryHackMe to support millions of aspiring security practitioners to learn about cyber security.

Your role will involve everything from maintaining the current code base to developing awesome features to support our users. This exciting position will focus on growth engineering work, bringing concepts from ideation to completion through quick iterations and a cycle of build-measure-learn. You must be comfortable working in a small team (two engineers, a product manager, and a designer). The responsibilities for this role will include:

• Designing and implementing software solutions that meet business requirements across TryHackMe considering scalability, reliability, and security

• Collaborating with product managers, designers, tech leads and developers on project plans and technical execution

• Mentoring and coaching developers, providing technical guidance and feedback

• Participate in code reviews, design reviews, and other engineering meetings, providing feedback to ensure code quality and alignment with TryHackMe technical standards.

• Writing high-quality, maintainable code using modern programming languages and frameworks (e.g., JavaScript, Typescript, NodeJS, React)

• Developing and maintaining databases and data models, as well as creating and optimising queries

• Monitoring and analysing system performance to identify and resolve bottlenecks and issues

• Staying up-to-date with emerging trends and technologies in software development and sharing knowledge with the team

• Participating in Agile development methodologies, including sprint planning, stand-ups, and retrospectives

• Contributing to the continuous improvement of software development processes and practices.

Skills & Experience

• Strong hands-on software engineering experience across both frontend and backend development.

• Advanced experience with TypeScript, React and Node.js, with the ability to work confidently across a modern web application.

• A strong ability to model complex systems and business domains, turning ambiguous problems into clear, maintainable software.

• Excellent coding fundamentals and the ability to make thoughtful decisions about structure, abstractions, interfaces and trade-offs.

• Confident using AI development tools such as Cursor, Codex and Claude to explore problems, write and improve code, and accelerate delivery.

• Strong judgement when working with AI-generated output, including the ability to validate, challenge and refine it rather than accepting it uncritically.

• Experience building, releasing and maintaining production software, including debugging issues and improving existing codebases.

• A practical understanding of software design, testing, security, reliability and performance.

• Comfortable working closely with product managers, designers and engineers to shape solutions rather than simply implementing predefined specifications.

• Clear written and verbal communication skills, with the ability to explain technical decisions and collaborate effectively in English.

• A willingness to contribute beyond your immediate work by sharing knowledge, improving engineering practices and supporting a strong engineering culture.

• An interest in cyber security, education or TryHackMe’s mission would be valuable.

Benefits & Perks

🚣 100% Remote - In a fully digital world, work from anywhere you want!

💻 Tools - a dedicated work laptop + any accessories you need to do your best work.

👕 Swag Pack - start your TryHackMe journey with a branded swag bundle!

💪 Personal Development - £2,500 training budget to acquire certifications, and more.

⛱️ Company Retreat - an annual company retreat, fully paid for by us!

🍕Lunch on us - whether you're a pizza-lover, salad obsessed or a big sushi fan, TryHackMe will cover the cost of your lunch order during our recurring company virtual lunches.

🧡 Health Insurance - if you'