Senior Software Development Engineer in Test, Semble
Framework Team
£65-75k
More information about location
Cloud-based medical & administration system
Be an early applicant
Cloud-based medical & administration system
101-200 employees
Be an early applicant
£65-75k
More information about location
101-200 employees
Company mission
To amplify the impact of healthcare professionals.
Role
Who you are
- At a Senior level at Semble, we will expect you to be mostly autonomous in your scope and to own and solve complex tasks or lead projects independently. You will work with peers from different functions and have an impact across department. You may be in a mentoring role for more junior team members and should be able to influence effectively and lead by example throughout the company
- 5+ years of professional experience as SDET or Test Automation Engineer
- A strong track record of designing, building, and evolving automation frameworks that are reliable, maintainable, and easy for engineers to adopt
- Hands-on experience building AI-augmented or agentic quality workflows, not only using tools such as Cursor or Claude to generate test code
- A pragmatic approach to AI adoption, with awareness of data privacy, security, clinical safety, cost, and false-positive risks
- Strong commercial experience with TypeScript-based automation frameworks. Playwright experience is highly desirable
- Experience with test coverage strategy and applying the testing pyramid to reduce unnecessary E2E testing
- Experience with write unit, component, API and integration tests
- Experience with performance testing tools, such as k6, is desirable
- Knowledge of non-functional testing, including performance, accessibility, security, and reliability
- Exposure to DevOps tools and cloud infrastructure, including Jenkins, Bitbucket, Datadog, and AWS
- Strong written and verbal communication skills, with the confidence to represent the SDET function, challenge assumptions, and defend quality in release discussions
What the job involves
- The Senior SDET, Frameworks role will lead the evolution of Semble’s test automation capability and help make quality a shared engineering discipline. You will:
- Lead the transformation towards a Quality Agent System, using AI agents and deterministic automation to continuously identify coverage gaps, generate and maintain tests, detect flaky tests, support exploratory testing, and surface reproducible defects
- Design safe, maintainable agent workflows with clear responsibilities, isolated execution, human review, and appropriate controls. Agents should assist engineers and SDETs, not replace human judgement or merge their own changes
- Establish the foundations required for this system, including a stable Playwright framework, reliable CI integration, ephemeral test environments, test data management, quality observability, and structured test knowledge
- Set up meaningful quality gates in CI and PR workflows, including coverage validation, framework conventions, high-risk code checks, and actionable failure reporting
- Rationalise our overcrowded E2E suite by identifying tests that belong at unit, API, or integration level, keeping E2E focused on critical user journeys
- Build and maintain a cross-layer coverage map and risk-based defect view, helping teams understand where quality gaps exist and where automation investment will have the greatest impact
- Expand test coverage and surface quality gaps earlier in the development lifecycle, including through test scenario generation, mutation testing, and AI-assisted exploratory testing
- Conduct proof-of-concepts for non-functional testing, including performance, accessibility, security, and reliability testing
- Contribute to company-wide quality strategy, tooling decisions, quality metrics, and shift-left adoption alongside the wider SDET and Engineering teams
- Coach engineers and SDETs on effective test design, the testing pyramid, Playwright, and contributing to the shared framework
Our take
In healthcare, overloaded systems riddled with room for error are in dire need of an overhaul. Semble (previously Heydoc) is one of the startups stepping in to try and fix the problem. Its integrated clinical system aims to help practices manage patient data and streamline their administration and operations.
Semble is not the only option in the market, but its focus on private hospitals and clinics may well work to its advantage, as many of its competitors primarily target the NHS. The company's cloud-based system aligns the company with the broader trend towards cloud-based operations, another good sign for its future growth.
A well-funded business, Semble has been able to remain at the forefront of innovation through adding automation and most recently, AI to its system. A considerable influx of investment in 2024 will help to consolidate its market position in the UK as well as support the expansion of its newer presence in France.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (last 2 of 5 rounds)
Jun 2026
$40.5m
SERIES C
Oct 2024
$15m
SERIES B
Total funding: $68m
Company benefits
- The great feeling coming with knowing you do something that matters: improving healthcare!
- Autonomy and ownership – we’ll set the vision and share the context, then we trust you to run with things – that’s the reason we hire you!
- 36 days holiday a year (including BH), that we will expect you to actually take so you can recharge and rest
- Get the tech you need - You will get the latest MacBook and take your pick across a wide range of equipment to set up your home office ergonomically
- Work alongside an inspiring team – our two founders have started Semble after a successful startup exit, and your future colleagues are all knowledgeable and innovators in their field
- Fantastic office space in Central London, right outside Monument - with a roof terrace, weekly animations, loads of natural light, and cute doggies!
- The usual free bits coming with nice offices (barista coffee, tea, fruits, happy hours and activities...).
- Company Equity - We appreciate and recognise all of our employees’ contributions, so everyone is eligible for Semble share options!
- Comprehensive health & wellbeing support – including private health insurance, and mental health support and free therapy sessions through Oliva.
- Hybrid & flexible work environment – work from anywhere in the UK, with also some flexibility to work across Europe. You decide how much or how little you go to the office 🇬🇧
Company values
- Impact - we do work that matters
- Collaboration - we are in it together
- Human touch - we deeply care
Company HQ
WeWork Bercy, Paris (France)
Leadership
Christoph Lippuner
(Co-Founder & CEO)Previously Executive Director at J. P. Morgan, before Co-founding and serving as CEO at Orogo.
Mikael Landau
(Co-Founder & CTO)Previously Executive Director at Goldman Sachs, before moving on to Co-found Orogo.
Share this job
View 2 more jobs at Semble