Careers at ManholeMetrics

ManholeMetrics is looking for an experienced Full-Stack Engineer to join their team as they scale their sewer and stormwater collection system monitoring solution across the US, Canada and UK.

Who you are

• You have strong skillset in full-stack development with the ability to identify problems and opportunities across the stack—and the initiative to solve them end-to-end

• You are experienced with cloud infrastructure setup and scaling (ideally AWS), including VPCs, IaC (CDK), containerisation (Docker), orchestration (Kubernetes or managed alternatives), CI/CD (GitHub Actions), and observability (logs/metrics/traces)

• You are very comfortable with relational database usage, schema design and optimisation.

• You are highly proficient in Python and modern backend frameworks with solid experience designing RESTful APIs, GraphQL schemas, data models.

• You enjoy creating reproducible, repeatable make based workflows that increase Developer Experience

• 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 a strong belief in maintaining code quality.

• You have experience working with and shipping React/TypeScript projects

• You care deeply about security, reliability, and cost efficiency—familiar with leastprivilege 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’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. You can follow data from a IOT device modem broadcast through to a cloud hosted database

• 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 or willing to relocate to London and are happy to commute 3+ days/week to our Vauxhall-based office (Edinburgh House Workspace office)

Desirable

• IoT networking experience (HTTPS/MQTT) and binary payload handling (e.g. Protocol Buffers)

• Automated testing at multiple layers (unit, contract, integration, end-to-end) and tools like PyTest, Cypress (for UI)

• Experience with mobile (React Native, Expo) or frontend (React/TypeScript)

• DevOps/Cybersecurity exposure (threat modelling, secrets, RBAC, audit trails)

• Low-level systems familiarity (embedded/firmware/C)

• Experience in tech-for-good and start-up/scale-up environments

• You hold a degree in Computer Science, Software Engineering (or equivalent practical experience)

What the job involves:

• Design and build reliable backend services and APIs that ingest, validate, and process IoT telemetry at scale (including parsing and modelling device data, e.g., Protocol Buffers → Pydantic -> Postgres)

• Being a core member of our migration team, migrating from a legacy MongoDB environment to a modern AWS hosted GraphQL and Postgres platform.

• Manage cloud infrastructure: set up and evolve secure, observable, cost-aware environments (VPCs, firewalls, SSL/TLS, IAM/RBAC), implement IaC (CDK), and streamline CI/CD for fast, safe deployments

• 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) 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

Compensation

• £60-80k per annum (experience dependent)

• Share options

• 31 days annual leave

• Hybrid working (2 days/week WFH)

• 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

Process

• Technical screening (remote or in person as convenient) with Full-Stack Engineer (60 mins) (rolling basis)

• Final interviews (in person) with engineering team/HR/CEO (full-stack system design assessment 45 mins, cultural fit 2x45 mins) (rolling basis)

• Candidate sought for immediate start or as practical following notice period etc.

ManholeMetrics is looking for an assembly technician to join their team as they scale their sewer and stormwater collection system monitoring solution across the US, Canada and UK. This is a 30 hour/week role ideally suited for someone seeking a highly flexible position and hours, with no extensive prior experience required, with the opportunity to enhance skills in the IoT, hardware, embedded, manufacturing and fulfilment space. Additional opportunities to gain further responsibilities over time.

Location: Kennington, London

Working hours: 30 hours required with flexible working pattern offered, (including evenings/weekends as you wish)

Contract type: flexible (full-time employee, contractor, or fixed length contract)

Start: preference for immediate start, flexible for the right candidate

Who you are

• Practical, detail-oriented, and comfortable working with hardware and electronics

• Organized and able to manage repetitive technical tasks with consistency and accuracy

• Proactive and willing to take ownership of tasks and processes

• Interested in technology, engineering, electronics, or manufacturing

• Able to follow technical procedures carefully while also identifying issues or improvements

• You communicate clearly

• 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

• You are London-based or willing to relocate to London and are happy to work at least 30 hours a week from our office (Edinburgh House Workspace office)

• You are reliable and can be counted on to lead timely manufacturing and fulfilment of an essential product for global clients providing key services (sewage/stormwater management)

Desirable

• Experience with electronics assembly or manufacturing

• Experience soldering PCBs or electronic components

• Familiarity with embedded devices or firmware flashing workflows

• Experience using testing equipment such as multimeters or power supplies

• Experience with QA/QC processes or production testing

• Experience preparing products for fulfillment or logistics operations

• Experience working in a startup, hardware, IoT, or manufacturing environment

• Basic understanding of electronics and hardware troubleshooting

• Familiarity with inventory or production tracking systems

• Any CAD/PCB design experience

What the job involves

• Flashing firmware onto embedded hardware and verifying successful installation

• Assembling electronic devices, PCBs, enclosures, antennas, brackets, and related accessories

• Performing soldering and rework on PCB assemblies and wiring where required

• Conducting QA/QC testing on devices and accessories to ensure reliability and consistency

• Following internal assembly, testing, and documentation procedures

• Preparing devices and accessories for shipment and fulfilment

• Packaging customer orders accurately and safely for domestic and international shipping

• Recording testing results, assembly status, and production information

• Assisting with inventory organization and component management

• Supporting continuous improvements to production, testing, and operational workflows

• Helping maintain a clean, organized, and efficient workspace

Compensation

• £23-28k per annum (experience-dependent)

• Share options (subject to employment type – FTE only)

• 29 days annual leave (including bank holidays)

• Monthly team activity (think axe throwing & darts)

• Pension plan

• Private AXA health insurance (subject to employment type – FTE only)

• Weekly team restaurant lunch

Process (rolling)

• Initial screening (remote) – 20 mins with operations associate/CEO

• In-person interview – 1.5 hours with engineering team for a practical skills assessment including assembly, programming, and order fulfilment, and to meet the wider team

• Final interview (remote) – HR/CEO 45 mins, for cultural fit