Product Manager

transitionzero
London

About the Role

We’re looking for a Product Manager to own the product lifecycle for our Interface team,  the team responsible for building the user-facing features of Scenario Builder, our flagship energy system modelling tool.

Scenario Builder enables policymakers, planners, and investors to rapidly build, analyse, and share energy system models without coding expertise. This role puts you at the heart of how that product takes shape: translating high-level product direction into detailed, executable specifications, running agile ceremonies, conducting user research, and ensuring every feature that ships meets a clear definition of done.

You’ll work closely with the Head of Product, a Principal Engineer, and a Product Designer to ensure the team builds the right thing, builds it well, and communicates it effectively. This is a hands-on, embedded role.

Responsibilities

Product specification and delivery

  • Write product requirements documents (PRDs) with clear acceptance criteria that engineering can confidently build and test against

  • Own the definition of done for every feature, ensuring nothing ships until it genuinely meets the bar

  • Conduct exploratory and user research to validate product direction and inform prioritisation

  • Manage the product backlog, ensuring work is well-scoped and sequenced for sprint planning

  • Run the Interface team’s agile ceremonies: daily standup, sprint planning, sprint review and retro, and a weekly refinement session

Communication and coordination

  • Own product marketing for Scenario Builder: identify the key headline for each release, draft compelling newsletter content and social posts, and coordinate with the marketing team to bring features to life

  • Produce and maintain user-facing product documentation, including the Scenario Builder pages on the marketing site and docs site

  • Run a fortnightly product and marketing sync to keep communications aligned with the delivery roadmap

  • Act as the connective tissue between product leadership, engineering, design, and marketing - so that each function has what it needs to do its best work

  • Maintain a log of user-requested features and proactively notify users when their requests ship

About You

You’re a Product Manager who thrives at the intersection of strategy and execution. You care deeply about shipping well-defined, high-quality features, not just managing a backlog. You’re comfortable getting into the weeds with engineers, writing detailed specifications, and ensuring that what ships genuinely meets the bar. You take pride in closing the gap between “good enough” and “done.”

We value ownership, accountability, a bias to action, and have a culture of feedback. As such, you should be a high-agency individual with self-awareness who wants TransitionZero to win. In addition to seeking out people with a proactive, problem-solving attitude and an eye for detail, as an evolving organisation, collegiality and empathy for our coworkers is a requisite.

As a growing tech startup operating in the climate and energy space, the landscape is always evolving around us. To be successful you need to have a high degree of adaptability and willingness to approach challenges with creativity and curiosity. Essentially you need to embrace change and be able to stay focused on our long-term mission while delivering value incrementally, so we can build towards our future.Â

Skills & Experience

Essential

  • Demonstrable experience as a product manager working closely with engineers in a small team environment.

  • Strong agile and scrum experience - story pointing, backlog management, running ceremonies that are genuinely useful.

  • Excellent written communication, you can write PRDs, acceptance criteria, and documentation that are clear, precise, and actionable.

  • Experience working on a user-facing product with a front-end.

  • User research capability. The ability to run discovery work that validates product direction.

Desirable

  • Understanding of energy systems, energy modelling.

  • Familiarity with data visualisation of complex data as a product domain.

  • Product marketing awareness. The ability to articulate features in terms that resonate with users and stakeholders

  • Experience working in a non-profit, mission-driven, or early-stage startup environment

Posted 2026-06-24

Recommended Jobs

Technical Project Manager - London

Next Ventures
London

Technical Project Manager - Automation/Data Centers - 6 months+ - London Next Ventures are looking for a Technical Project Manager for a 6 month extendable contract with a large client in the Da…

View Details
Posted 2026-06-06

Director of UK Resilience

British Red Cross
London

Director UK Resilience Location: UK Wide, Flexible (Hybrid) Salary: £83,116 - £116,838 per annum, dependent on experience Hours: 35 per week Contract: Permanent Are you ready to lead th…

View Details
Posted 2026-06-12

Lead Engineer

Smart Managed Solutions
London

Be part of the Smart Team! A fantastic opportunity has arisen for a Lead Engineer engineer to work on an exciting contract in Stratford. This is a Monday-Friday role working 08:00-17:00. About Us A…

View Details
Posted 2026-06-04

Year 3 Teacher - Barnet - January 2026

Marchant Recruitment
Barnet, Greater London

Are you a passionate and creative Year 3 Teacher looking for an exciting opportunity to make a difference? A welcoming and inclusive primary school in Barnet is seeking a skilled Year 3 Teacher to jo…

View Details
Posted 2025-12-10

Lifeguard (Battersea)

Places for People - Organic
Battersea, Greater London

We are Places for People Group, we're a social enterprise that believes it's people that make a community. That's why we build homes and deliver services for everyone in the community to thrive. At P…

View Details
Posted 2026-06-21

Exec Producer, Hot Smart Rich

FlightStory
London

Exec Producer, Hot Smart Rich COMPANY : FLIGHTSTORY SHOW: HOT SMART RICH LOCATION: LOS ANGELES, USA ABOUT FLIGHTSTORY We are a media and investment company, and we are on a mission t…

View Details
Posted 2026-06-10

Interim EU Pay Transparency Specialist

Michael Page
City of London, Greater London

Lead on the tail-end of the implementation of EU pay transparency regulations across the organisation. Collaborate with internal stakeholders to ensure compliance with legal and regulatory require…

View Details
Posted 2026-03-25

Sales Assistant (Part-Time 4hr)

TIMBERLAND
London

Join us now for the chance to be part of an amazing team and be responsible for providing our customers with a memorable shopping experience! We’re looking for passionate Sales Associates (perm, par…

View Details
Posted 2026-06-18

School Administrator - Girls’ School, Wandsworth

Marchant Recruitment
London

School Administrator – Girls’ School, Wandsworth  Location: Wandsworth Contract: Full-time, Permanent Salary: Competitive Start Date: January 2026 A high-performing girls’ secondary…

View Details
Posted 2025-11-25

Band 6/7 Locum Paediatric Preschool Speech and Language Therapist - London

Pulse
London

Job Title: Locum Paediatric Preschool Speech and Language Therapist – London Banding: Band 6/7 Location: London Working Hours: Full/Part Time Start Date: ASAP Duration: 3 months …

View Details
Posted 2025-07-31