At a Glance
- Tasks: Lead backend development and shape the future of a proven SaaS platform.
- Company: Established SaaS business in the booming construction tech industry.
- Benefits: Competitive salary, equity participation, and opportunities for technical leadership.
- Other info: Join a stable company with significant growth potential and a collaborative culture.
- Why this job: Make a real impact on a product that supports professionals in construction.
- Qualifications: Strong backend engineering experience, ideally with PHP and SaaS platforms.
The predicted salary is between 70000 - 90000 £ per year.
A well-established SaaS business within the construction technology space is seeking a hands-on Lead Engineer with a strong backend focus to take technical ownership of a proven platform entering its next phase of growth. The company has spent more than eight years building software that is actively used by professionals operating in demanding, real-world construction environments. The platform supports project tracking, cost management, operational workflows, and site delivery across a growing customer base. Following a significant rebuild of the product and strong recent commercial growth, the business is now scaling into larger enterprise-level construction customers. The technical foundations are in place, and the next phase is focused on scalability, system reliability, and continued product evolution.
This role is suited to an experienced engineer who enjoys meaningful ownership and wants to play a central role in shaping how a product and engineering function evolves. You will take primary responsibility for the backend platform, working closely alongside an established frontend team and contributing to a wider ecosystem that includes both web and mobile applications with offline-first functionality.
Key responsibilities include:
- Maintaining platform stability and performance as usage scales
- Leading backend architecture and API design decisions
- Supporting scalability as new customers are onboarded
- Collaborating with product and business stakeholders to guide technical direction
- Balancing feature delivery with long-term technical improvements
The role combines strategic thinking with hands-on engineering. You will have significant influence over how systems are built, improved, and scaled over time.
What We’re Looking For:
Strong backend engineering experience is essential, ideally within modern PHP environments and production SaaS platforms operating at scale. Experience with:
- REST API design and architecture
- SQL schema design and optimisation
- Modern backend frameworks (Symfony preferred)
- Collaborative engineering environments and Git-based workflows
Exposure to frontend technologies such as React and TypeScript is beneficial, although the primary focus of the role remains backend ownership and systems thinking. Most importantly, the business is looking for someone pragmatic, commercially aware, and confident in their technical judgement — someone motivated by ownership and long-term impact rather than simply feature delivery.
Why This Role Stands Out:
This is an opportunity to join a stable, well-funded business with a proven product, genuine market demand, and strong long-term backing. The platform is already embedded within active construction environments and continues to gain traction with larger customers. The company is investing heavily into the next stage of growth, creating an opportunity for the right individual to play a highly influential role in shaping both the technology and engineering culture moving forward. There is also a clear pathway into broader technical leadership as the business expands, alongside long-term incentive alignment through equity participation.
Summary:
This position would suit an engineer looking to move beyond pure development work into a role centred around ownership, technical direction, and long-term product evolution within a growing SaaS environment.
Lead Engineer (Backend Focus) employer: TONIC
Contact Detail:
TONIC Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Lead Engineer (Backend Focus)
✨Tip Number 1
Network like a pro! Reach out to your connections in the construction tech space and let them know you're on the lookout for opportunities. You never know who might have the inside scoop on a Lead Engineer role or can put in a good word for you.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your backend projects, especially those involving PHP and REST APIs. This will give potential employers a taste of what you can bring to the table and how you can contribute to their platform's evolution.
✨Tip Number 3
Prepare for interviews by brushing up on system design and scalability concepts. Be ready to discuss how you've tackled similar challenges in the past and how you can help maintain platform stability as they scale up. Confidence in your technical judgement is key!
✨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 our team and contributing to the exciting growth ahead.
We think you need these skills to ace Lead Engineer (Backend Focus)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Lead Engineer role. Highlight your backend engineering experience, especially in PHP and SaaS platforms, to show us you’re the right fit for our team.
Craft a Compelling Cover Letter: Use your cover letter to tell us why you’re passionate about this role and how your background makes you a great candidate. Share specific examples of your past work that demonstrate your ownership and technical judgement.
Showcase Your Technical Skills: Don’t forget to mention your experience with REST API design, SQL schema optimisation, and any modern backend frameworks like Symfony. We want to see how you can contribute to our platform’s scalability and performance.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!
How to prepare for a job interview at TONIC
✨Know Your Tech Inside Out
Make sure you’re well-versed in backend technologies, especially PHP and REST API design. Brush up on your SQL schema design and optimisation skills too. Being able to discuss your past experiences with these technologies will show that you’re not just familiar but truly knowledgeable.
✨Showcase Your Ownership Mindset
This role is all about taking ownership, so be prepared to share examples of how you've led projects or made significant contributions in previous roles. Highlight instances where you balanced feature delivery with long-term improvements, as this aligns perfectly with what the company is looking for.
✨Collaborate Like a Pro
Since the role involves working closely with frontend teams and stakeholders, demonstrate your collaborative spirit. Talk about how you’ve successfully worked in cross-functional teams before and how you approach communication and problem-solving in those settings.
✨Think Scalability and Reliability
Be ready to discuss strategies for maintaining platform stability and performance as usage scales. Share your thoughts on best practices for backend architecture and how you would approach onboarding new customers while ensuring system reliability.