Senior Full-Stack Developer, ManholeMetrics
£60-85k
3 days a week in office (Victoria - Fora Greencoat Place)
IoT sensors and analytics company combatting flooding
Be an early applicant
IoT sensors and analytics company combatting flooding
1-20 employees
Be an early applicant
£60-85k
3 days a week in office (Victoria - Fora Greencoat Place)
1-20 employees
Company mission
To stop flooding and bring wastewater into the 21st century.
Role
Who you are
- You have strong skillset in full-stack development (core focus on backend and cloud infrastructure at scale) with the ability to identify problems and opportunities across the stack—and the initiative to solve them end-to-end
- You have 3–5 years of industry experience with a proven track record of shipping reliable services to production and operating them at scale, following industry best practices and managing 1-2 person teams
- You are highly proficient in Python and modern backend frameworks (ideally FastAPI), with solid experience designing RESTful/GraphQL APIs, data models, and background jobs
- You have vast experience working with and shipping React/React Native, HTML/CSS/JavaScript/TypeScript projects
- You are experienced with cloud infrastructure setup and scaling (DigitalOcean/AWS/Azure/GCP), including VPCs, IaC (Terraform), containerization (Docker), orchestration (Kubernetes or managed alternatives), CI/CD (GitHub Actions), and observability (logs/metrics/traces)
- You are comfortable with datastores (e.g., PostgreSQL, MongoDB, time-series), caching (Redis), and message/IoT protocols (e.g., MQTT, webhooks, queues)
- You care deeply about security, reliability, and cost efficiency—familiar with least-privilege access, secrets management, SSL/TLS, and compliance-minded logging
- You have a portfolio you’re proud of (e.g., deployed services, internal platforms, open-source repos)
- You hold a degree in Computer Science, Computer Engineering, Electronics, and/or Data Science (or equivalent practical experience)
- You’re excited to learn and apply new languages, frameworks, and tools to create real-world solutions
- You’re a pragmatic problem-solver who employs design thinking, values sound engineering principles, and pays close attention to detail
- You enjoy multi-faceted exposure to work-streams in IoT, sensor technology, networking, embedded systems, app development, firmware, software, and SaaS/DaaS analytics (familiarity is a plus; your focus remains backend & cloud)
- You communicate clearly—translating client needs into robust engineering solutions and explaining complex concepts to non-technical stakeholders
- You thrive in a small, diverse team, excel under pressure, and proactively step into new challenges—start-up dynamism suits you
- You’re an ecowarrior at heart—motivated by building technology that combats climate change and delivers measurable societal impact
- You have the right to work in the UK or a visa with at least 6 months remaining (we can sponsor a Skilled Worker visa post-probation)
- You are **London-based** and happy to commute **3+ days/week** to our Victoria-based co-working space
Desirable
- Have deployed and shipped code using FastAPI
- Familiar with containerised applications and SRE/CI/CD tools (Docker, Kubernetes/managed orchestration, Terraform, GitHub Actions)
- Strong database design ability and performance tuning (PostgreSQL, MongoDB, time-series)
- Observability: OpenSearch/ELK, Prometheus, Grafana, alerting and on-call readiness
- Node.js exposure for services, CLIs, or integrations
- 3rd-party API integrations and webhooks at scale
- IoT networking experience (MQTT, CoAP) and binary payload handling (e.g., Protocol Buffers)
- Experience with mobile (React Native, Expo) or frontend (React/TypeScript) is a plus
- Automated testing at multiple layers (unit, contract, integration, end-to-end) and tools like PyTest, Cypress (for UI)
- DevOps/Cybersecurity exposure (threat modeling, secrets, RBAC, audit trails)
- Low-level systems familiarity (embedded/firmware/PCB/C/Micropython) is a bonus
- Experience in tech-for-good and start-up/scale-up environments
What the job involves
- Design and build reliable backend services and APIs that ingest, validate, and process IoT telemetry at scale (including parsing and modeling device data, e.g., Protocol Buffers → Pydantic)
- Manage cloud infrastructure: set up and evolve secure, observable, cost-aware environments (VPCs, firewalls, SSL/TLS, IAM/RBAC), implement IaC (Terraform), and streamline CI/CD for fast, safe deployments
- Scale our platform as we expand across the UK, US, Canada and Germany—capacity planning, horizontal scaling, data partitioning, and resilience (HA, backups, disaster recovery)
- Instrument the stack end-to-end (logs, metrics, traces) and improve reliability with SLOs, runbooks, and alerting; drive incident response and post-mortems
- Collaborate across the stack with firmware, app, and frontend engineers to plan, produce, test, and deploy new capabilities (device ↔ backend ↔ dashboard)
- Develop data models, visualisations, and analytics for flood warnings and predictive alerts—turning raw sensor data into actionable insights for clients
- Automate and optimise workflows: testing, data pipelines, release processes, and developer tooling (including Gen AI) to boost team velocity and quality
- Balance speed and quality, focusing on tangible outcomes while maintaining high engineering standards and documentation
- Work shoulder-to-shoulder with the CEO and engineering team on system-level design and end-to-end architecture as we scale rapidly and robustly
Application process
- Application submission via Welcome to the Jungle before 11:59 on Wed 3rd September
- Respond to initial screening questions sent via Welcome to the Jungle by 11:59 on Fri 5th September
- Technical screening (remote) with Full-Stack Engineer (30 mins) week of 8th September
- Final interviews (in person) with CTO/HR/CEO (full-stack tech assessment 60 mins, cultural fit 2x45 mins) w/c 15th September
Salary benchmarks
Our take
As the effects of climate change intensify, the frequency of flooding events is increasing. However, major infrastructures are currently grappling with a reactive approach, mainly due to the scale of their networks and the absence of adequate sensing technology and analytics. This approach proves to be expensive and environmentally harmful. Recognising these challenges, ManholeMetrics wants to address these issues and provide an effective solution to mitigate the impact of flooding.
ManholeMetrics provides cost-effective, long-lasting sensors that are designed to monitor wastewater levels. These sensors are accompanied by real-time and predictive alert systems, allowing infrastructure operators to take a proactive approach to flood management. Through this proactive approach, ManholeMetrics enables the creation of calibrated models and facilitates optimised data-driven decision-making for more effective flood prevention and response.
ManholeMetrics has received support from Yorkshire Water, Thames Water, and National Highways. This support not only serves as a testament to the credibility of ManholeMetrics' technology, but also propels the company closer to achieving its ambitious goal of ending flooding.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (1 round)
Apr 2023
$0.5m
SEED
Total funding: $0.5m
Company benefits
- Share options
- 31 days annual leave
- Hybrid working (2 days/week WFH)
- Access to top notch Fora co-working space (Greencoat Place)
- Monthly team activity (think axe throwing & darts)
- Pension plan
- Apple laptop
- Private AXA health insurance
- Weekly team restaurant lunch
- Late working (past 7pm) pizza policy
- Late Uber home (past 9pm) policy
Company values
- Learn - in the ever-evolving tech world, the ground shifts under our feet and we must not be afraid to evaluate new ways of working, explore unchartered territory and develop new skills, without fear of failure, setbacks or judgement and strive to create a culture in which such learning is not just supported but encouraged, and that we can own and learn from our mistakes and both give and receive feedback
- Drive - we must show a clear passion for what we do and why we do it and the role it plays in our ultimate objective - ending flooding. This was the impetus behind our creation and is what motivates us to continue to innovate and push the boundaries of the possible
- Deliver - we must follow through on our commitments to our clients and colleagues, providing outcomes that make efficient use of the resources at our disposal, and at times work in an agile manner, flexing between self-led and collaborative working styles in response to our dynamically changing start-up environment
Company HQ
Westminster, London, UK
Leadership
Will Dubin
(Founder)Royal Academy of Engineering Enterprise Fellow with a Masters of Civil Engineering from Imperial. Experience in major infrastructure projects across the UK and abroad.
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