Frontend Engineer

MFK Recruitment; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

MFK Recruitment is assisting in the recruitment of a Frontend Engineer for a London-based energy technology client. The role focuses on building customer-facing interfaces that translate energy data into clear, actionable dashboards and experiences.

You will own the frontend stack, collaborate with data and backend teams, and influence product direction in a fast-paced, entrepreneurial setting. The position is hybrid, with initial office presence in Mayfair, London.

Qualifications

• Strong frontend fundamentals across HTML, CSS, JavaScript, and a modern framework, ideally React.
• Track record of shipping customer-facing products and demonstrating impact.
• Strong product instinct and focus on what users actually need.
• Comfortable operating with limited direction in a fast-moving environment.
• Able to communicate technical trade-offs clearly to non-technical stakeholders.
• Ownership, pace, and building from the ground up.

Responsibilities

• Build customer platforms by designing and building interfaces for energy data including consumption, costs, billing, and asset performance.
• Take ownership of the frontend codebase, defining architecture, component structure, and engineering standards.
• Work closely with backend and data teams to create clean API integrations and iterate on UX based on customer feedback.
• Make pragmatic decisions that ship working software quickly, while keeping long-term maintainability in mind.
• Translate complex operational and commercial data into UI patterns that are easy to understand and act on.
• Surface the right information at the right time, prioritising clarity and usability.
• Build reporting and performance views that help customers understand their energy usage rather than just display raw data.
• Set up the component library, testing approach, and development conventions.
• Help create an environment that is easy to onboard into as the team and product grow.
• Work closely with the founding team to prioritise effectively, balancing speed of delivery with durability.
• Embrace modern AI-powered programming tools and use them to maximise productivity and quality.
• Engaged directly with customers and internal stakeholders to understand how the product is used and where it can improve.
• Develop working knowledge of energy supply and UK energy systems interfaces reflect real customer needs.
• Identify usability issues proactively and solve them without heavy direction.

Skills

HTML

CSS

JavaScript

React

Job description

FrontendEngineer-Energy

Our client is hiring a Frontend Engineer to help build the software that their customers interact with directly, as they continue to scale their product and technology function. We have already recruited 3 individuals to the company, and are pleased to be supporting them again on this key hire.

TheroleisbasedinMayfair,Londonandoperatesonahybridbasis,ideallywith3daysperweekintheofficeinitially.

FrontendEngineer-RolePurpose:

We are looking for a Frontend Engineer to build the software that our client’s customers interact with directly. This is their first dedicated frontend hire, responsible for turning complex energy data such as metering, billing, consumption and asset performance into interfaces that are clear, reliable and genuinely useful.

You will own the frontend of their first major customer platforms, working closely with data and backend teams, engaging directly with customers, and helping decide what to build, how to build it, and how to improve it over time. This is a highly visible role within a small team where your work will carry real weight.

We’re looking for a professional engineer, but also someone who is happy to move quickly, learn through iteration, and help build the product in a hands-on, entrepreneurial way. They are especially keen to find someone enthusiastic about AI and modern AI-powered development tools, rather than someone resistant to them, as this is a big part of how the leadership team sees product development evolving.

FrontendEngineer-KeyResponsibilities:

1.BuildCustomerPlatforms

• Designandbuildtheinterfacesthroughwhichcustomersviewtheirenergydata,includingconsumption,costs,billing,andassetperformance.
• Takeownershipofthefrontendcodebase,definingarchitecture,componentstructure,andengineeringstandards.
• WorkcloselywithbackendanddatateamstocreatecleanAPIintegrationsanditerateonUXbasedoncustomerfeedback.
• Makepragmaticdecisionsthatshipworkingsoftwarequickly,whilekeepinglong-termmaintainabilityinmind.

2.ConnectDatatoDecision-Making:

• TranslatecomplexoperationalandcommercialdataintoUIpatternsthatareeasytounderstandandacton.
• Surfacetherightinformationattherighttime,prioritisingclarityandusability.
• Buildreportingandperformanceviewsthathelpcustomersunderstandtheirenergyusageratherthansimplydisplayrawdata.

3.EstablishFrontendPractice:

• Setupthecomponentlibrary,testingapproach,anddevelopmentconventionsthattheteamwillbuildon.
• Helpcreateanenvironmentthatiseasytoonboardintoastheteamandproductgrow.
• Workcloselywiththefoundingteamtoprioritiseeffectively,balancingspeedofdeliverywithdurability.
• EmbracemodernAI-poweredprogrammingtoolsandusethemtomaximiseproductivityandquality.

4.StayClosetotheCustomer:

• Engagedirectlywithcustomersandinternalstakeholderstounderstandhowtheproductisbeingusedandwhereitcanimprove.
• DevelopaworkingknowledgeofenergysupplyandtheUKenergysystemsointerfacesreflectrealcustomerneeds.
• Identifyusabilityissuesproactivelyandsolvethemwithoutheavydirection.

WhatWe’reLookingFor:

• StrongfrontendfundamentalsacrossHTML,CSS,JavaScript,andamodernframework,ideallyReact.
• Atrackrecordofshippingcustomer-facingproductsandbeingabletodemonstratetheirimpact.
• Strongproductinstinct,withtheabilitytothinkbeyondthebriefandfocusonwhatusersactuallyneed.
• Comfortableoperatingwithlimiteddirectioninafast-movingenvironment.
• Abletocommunicatetechnicaltrade-offsclearlytonon-technicalstakeholders.
• Someonewhoenjoysownership,pace,andbuildingfromthegroundup.

NicetoHave:

• 3-5yearsbuildingcustomer-facingsoftwareinaproduct-ledorstartupenvironment.
• Experiencewithdatavisualisationlibrariesandpresentinglarge,complexdatasetsclearly.
• Exposure to Energy, FinTech Utilities, or another technically complex B2B sector.
• EnoughbackendfamiliaritytoreadAPIs,spotschemaissues,andworkeffectivelyacrossthestack.
• Experiencesettingupafrontendcodebasefromscratch.

WhatYou’llGet:

• Ahighlyownedroleatthecentreofwhatcustomersactuallyseeanduse.
• Theopportunitytohelpshapeaproductfromanearlystageintosomethingcustomersrelyon.
• Closecollaborationwithasmallleadershipteam,withdirectinputintoproductdirection.
• Thechancetobuildexpertiseacrossenergydata,customersoftware,andproductinagrowingbusiness.
• Long-termscopetogrowwiththecompanyasitscustomerbaseandplatformexpand.