Founding Engineering Lead - Remote in City of London

Location: London

Employment Type: Full time

Location Type: Remote

Department: Engineering

Compensation: £87.5K – £125K

Benefits & Culture: See here.

Equity: A very generous EMI share offering.

Holiday: 26 days + bank holidays.

Mission: Elevate later life for everybody and build the care sector of the future.

Office Policy: Remote.

Head Office Location: London Bridge, London, UK.

The Opportunity: We are seeking a hands-on Engineering leader to build a new product line from the ground up and lead a small team of product engineers working on AI voice & chat agents. You will work closely with our leadership to get this from 0 to 1 in record time, and integrate seamlessly into Found, our operating system for care. You will truly work at the intersection of product and engineering, mixing scrappiness and fast learning cycles with proper engineering to scale the product. You’ll report to the CPTO with a dotted line to the GM for product direction.

What does this role involve?

• Prototyping and building the foundation for our product.
• Owning the technical roadmap.
• Coding alongside the team while also sharing the product hat with our GM, supported by our VP Product and CPTO.
• Building and managing a team of 3 product engineers; helping them grow and deliver more impact.
• Ensuring a high bar both in terms of speed and quality.
• Oscillating between the two depending on the context.
• Helping the team operate effectively by breaking problems down into simpler ones for fast delivery and impact.
• Wearing any other hat necessary to the success of the team.

What problems will you be solving?

• Build AI voice and chat agents to help care homes provide a 5-star service to people looking for care.
• Ensuring our agents provide high quality responses and accurate information, with robust eval frameworks to measure and improve performance.
• Integrating deeply into Found, our SaaS operating system, leveraging our CRM to enable care seekers to book viewings and get information seamlessly.
• Fine-tune voice quality, tone, and emotional intelligence to create warm, empathetic interactions that reflect our care values.
• Build systems that balance LLM economics - managing token costs, latency trade-offs, and knowing when to fine-tune vs prompt engineer.

We think you’ll be a great fit if...

• You are a self-starter. You thrive in a fast-paced environment and are comfortable working on challenges with many unknowns.
• You provide clarity and make things happen.
• You have 7+ years of hands-on experience in software engineering, including leading technical decisions and mentoring engineers and have worked across the stack.
• You have hands-on experience building with LLMs - whether fine-tuning models, working with voice APIs, or building eval frameworks.
• You have opinions on LLM observability, prompt engineering, and building reliable AI systems.
• You are extremely product-minded and conscious of what great looks like from an engineering point of view.
• You focus relentlessly on impact and decreasing the cost of change.
• You know when to use duct tape and when to build for scale - comfortable shipping MVPs that work, then iterating based on real usage.
• You have embraced AI in your workflow.
• You have built something 0 to 1 and worked in cross-functional teams.
• You value diversity and inclusion and are passionate about creating a space where everyone's voices are heard, respected, and celebrated.
• You’re someone who brings joy and enjoys building meaningful work relationships.

This role isn’t for you if…

• Our mission to elevate later life care doesn't resonate with you.
• You want very clear lanes and don't enjoy working in a fast-paced environment with loosely defined requirements.
• You don't enjoy being hands-on anymore. We believe leaders should operate at all levels.
• You don't know how to be scrappy.

Lottie’s Interview Process:

• Screening interview led by Lottie’s Talent Acquisition Lead.
• First round interview led by Hiring Manager.
• Technical assessment comprising two parts: a) AI-enabled coding pairing session with two Lottie engineering team members, b) System design interview with two engineering team members.
• Behavioural interview with Hiring Manager.
• Final interview with Will Donnelly (Lottie’s Co-Founder & CEO).

Candidate Experience: The majority of feedback will be given via email and we try our very best to give specific and constructive feedback where possible. Pre-Screen & First Interview: You'll receive an email notification, but no specific feedback will be provided at this stage. Hiring Manager Interview: If you are unsuccessful after this interview, you will receive constructive feedback via email. Case Study: If you are not successful after the case study, you'll receive constructive feedback via email and be offered a debrief call with our Talent Lead. Final Interview: For final-stage candidates who are not offered the role, we will provide your feedback live via a phone call.

Meet Lottie: Founded in London in July 2021, Lottie is a fast growth HealthTech start-up aiming to build the world’s first SaaS enabled marketplace for care and with a goal of allowing families to seamlessly book care online in a similar manner to reserving a holiday stay via Airbnb or Expedia. Since launching in July 2021, Lottie has supported millions of care seekers find the right care for loved ones and has raised over £25m from leading venture capital funds including Accel, General Catalyst and Kindred, as well as from well known technology entrepreneurs including Mike Hudack (ex-CPTO of Deliveroo & Monzo) and Tom Blomfield (ex-CEO of Monzo Bank). More recently, Lottie was the acclaimed winner of LinkedIn and Startup.co.uk Top Startup awards.

Why Lottie?

• Career Opportunity - A career-defining opportunity to lead and shape the future of our flagship marketplace and tackle complex challenges across the stack!
• Early Hire Benefits - Be an early hire at one of the UK’s fastest growing startups and benefit from fast career progression, as well as a generous stock options package.
• Mission - Tech for good that aims to build the care industry of the future and to positively impact millions of peoples lives.
• Investors - Series A backed startup having raised £25m+ from tier 1 venture capital investors including Accel and General Catalyst.
• Global Opportunity & Scalability - Be part of a company that is solving a real tangible problem that every family around the world faces at some point in their life.
• People - Join a kind, talented and mission driven team that loves coming to work every day.
• Culture - Excellent employee compensation/benefits, hybrid office policy and outstanding company culture with a 5/5 employee review score on Glassdoor.
• Award Winning - Acclaimed winner of LinkedIn’s 2024 “Top Startups” and named the UK’s number one startup for 2025 in Startup.co.uk 100 Index.

We want to create an inclusive environment that celebrates the diversity of our people whilst enabling them to do the best work of their careers. We are committed to ensuring that all our people processes are equitable. All applicants will be considered for employment without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity status or disability status. If you require reasonable accommodations during the application or interview process, please let us know at Alice.Rooke@lottie.org.