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Location: London Type: Permanent Job #3231

Applications & Integration Engineer Full-Time | London | Engineering

About the Company

We are a thermal hardware technology company designing and deploying next-generation thermal energy systems. Our products sit at the intersection of hardware innovation and real-world integration — enabling industrial, commercial, and infrastructure customers to achieve significant gains in thermal efficiency and decarbonisation. We work on complex, first-of-kind deployments with demanding technical and commercial environments.

The Role

We are looking for an Applications & Integration Engineer to bridge our product capabilities with real-world customer deployments. This is a technically deep, commercially aware role that spans the full product lifecycle — from early-stage market discovery and feasibility work through to hands-on site commissioning, performance monitoring, and ongoing product improvement feedback. You will be the primary technical point of contact across customer engagements, acting with confidence in both pre-sales and post-sales environments. You thrive navigating ambiguity, are comfortable on customer sites, and bring a systems-thinking mindset to every challenge.

Key Responsibilities Pre-Sales & Applications Scouting

Drive market adjacency mapping and use-case hypothesis development to identify new application opportunities for thermal hardware Lead field discovery activities including technical customer interviews and feasibility assessments Conduct fit-gap analyses to evaluate product readiness for new configurations and environments Contribute to techno-economic modelling and business case development alongside commercial colleagues Support initial proposal development (technical and commercial scope), early-stage negotiations, and business analysis activities Participate in market conversations and future product exploration initiatives

System Integration Engineering

Own the detailed site data analysis and end-to-end system design process for customer deployments Define system P&IDs and interface documentation; size pipework and select appropriate valves and components Develop and maintain system performance models using contractor and customer-supplied data Define control philosophy, communications protocols, and high-level electrical design requirements Lead review and technical sign-off of contractor-produced P&IDs, schematics, and design calculations Identify, flag, and resolve design challenges or integration issues early in the project lifecycle Develop integration tooling as required to support project delivery

Site Commissioning & Deployment

Act as the main technical point of contact throughout deployment and site start-up Produce technical commissioning documentation and define hold points for contractor teams Provide on-site commissioning support, with particular responsibility for first-of-kind configurations Witness and support Site Acceptance Testing (SAT) and deployment activities Troubleshoot integration and system issues during commissioning, working hands-on with contractor teams

Customer Lifecycle & Product Improvement

Conduct thermal load profiling, demand modelling, and high-level input/output analysis for customer sites Generate and manage customer site requirements documentation Undertake site surveys and site readiness visits to inform design and planning decisions Perform compressor right-sizing and configuration analysis for each deployment Feed back product improvement insights and field learnings directly to R&D and product teams Support ongoing site maintenance oversight and performance monitoring activities

About You

Degree in Mechanical Engineering, Chemical Engineering, Energy Systems, or a closely related discipline Experience in system integration, applications engineering, or technical project delivery — ideally within thermal, HVAC, refrigeration, industrial gas, or energy hardware sectors Comfortable reading and producing P&IDs, schematics, and engineering calculations Hands-on experience with commissioning activities on physical hardware systems Strong technical communication skills — able to present clearly to both engineering and commercial audiences Comfortable in customer-facing settings, including site visits and technical sales conversations Self-directed, with the ability to manage multiple projects and stakeholders simultaneously

Desirable

Experience with control system architectures and communications protocols (e.g. Modbus, BACnet, CAN) Background in compressor technology, heat pump systems, or industrial thermal processes Familiarity with techno-economic or systems performance modelling Experience working in a scale-up or early-commercial-stage hardware company

What They Offer

The opportunity to work on technically novel thermal hardware at the frontier of industrial decarbonisation A varied, high-ownership role spanning commercial, design, and site delivery work A collaborative, engineering-led culture where your insights directly shape product development Competitive salary, equity participation, and benefits package Flexible hybrid working with regular site and customer travel

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