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Location: London

Salary band: £66,369 – £70,000

Role: Permanent, full-time



About yo

uYou’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 requisit


e.
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 futu


re.
About the r

ole We’re looking for a Product Manager to own the product lifecycle for Scenario Builder, our flagship energy system modelling t


ool.
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.
Responsibi


lities
Product specification and

  • deliveryWrite product requirements documents (PRDs) with clear acceptance criteria that engineering can confidently build and test
  • againstOwn the definition of done for every feature, ensuring nothing ships until it genuinely meets
  • the barConduct exploratory and user research to validate product direction and inform priori
  • tisationManage the product backlog, ensuring work is well-scoped and sequenced for sprint
  • planningRun agile ceremonies: daily standup, sprint planning, sprint review and retro, and a weekly refinement


session
Communication and coo

  • rdinationCommunicate effectively with a range of stakeholders, translating complex product concepts into clear insights for both internal teams and exter
  • nal usersProduce and maintain user-facing product documentation, including the Scenario Builder pages on the marketing site and
  • docs siteAct as the connective tissue between product leadership, engineering, design, and marketing - so that each function has what it needs to do its
  • best workMaintain a log of user-requested features and proactively notify users when their requ


ests ship
Skills and e


xperience


  • EssentialDemonstrable experience as a product manager working closely with engineers in a small team
  • environmentStrong agile and scrum experience - story pointing, backlog management, running ceremonies that are genui
  • nely usefulExcellent written communication, you can write PRDs, acceptance criteria, and documentation that are clear, precise, and
  • actionableUser research capability - the ability to run discovery work that validates produc


t directi

  • on
    DesirableUnderstanding of energy systems, ener
  • gy modellingFamiliarity with data visualisation of complex data as a pr
  • oduct domainProduct marketing awareness - the ability to articulate features in terms that resonate with users and
  • stakeholdersExperience working in a non-profit, mission-driven, or early-stage startup


environ

ment
About usTransitionZero is a climate tech non-profit founded in 2021. TransitionZero builds software to reduce the time to build clean energy at scale. We pioneer open-access and open-source tools that make electricity system modelling more transparent, accessible, and actionable for governments, financiers and grid operato


rs worldwide.
Our flagship tool, Scenario Builder, enables policymakers, planners and investors to rapidly build, analyse and share energy system and electricity grid models without coding expertise or external consultants. Supported by model-ready datasets, training and market insights, our tools strengthen in-house capacity and support resilient, affordable and locally-led energ


y transitions.
At TransitionZero, we understand that diversity is an essential component of a successful team, whether that be diverse ways of thinking, personal or professional backgrounds, or skills. We aim to be the most talented non-profit in our vertical through our culture of ownership an


d adapta

  • bility.
    BenefitsEnhanced competitive pension scheme - auto-enrol
  • lment from day 125 days annual leave (excluding UK public holidays) and an additional discretionary days off such as over th
  • e festive period20 days of annual allowance to work from anywh
  • ere in the worldHybrid working and core wor
  • king hours modelAllowance to set up
  • your home officeAnnual budget and dedicated leave time for relevant
  • training coursesEnhanced gender-neutral parental leave (16 w
  • eeks fully paid)Private healthcare following the successful completion of the
  • probation periodYear


ly team offsites
Our commitment to diversity, equi

ty, and inclusionStudies have shown that some people from marginalised or underrepresented groups are less likely to apply to a role unless they meet all of the hiring guidelines or qualifications. Whoever you are, even if you don't meet all of the criteria, if you can demonstrate a variety of skills and experience relevant to this role, we encourage you to apply as you might just be the candidate we hire! At TransitionZero, we're looking for people who are genuinely passionate about what they do, and we welcome all people, regardless of

their background.If you would like to discuss any reasonable adjustments to the application or hiring process that may better facilitate your participation, please contact our People Team (people@transitionzero.org) for an informal chat. We will make every effort to respond to your request for assistance as


soon as possible.