Communications & Marketing Manager

Company: TransitionZero

Location: London

Posted: April 11th, 2026

About Us

We are a climate-tech startup established in 2021. We provide electricity grid modelling software to accelerate energy planning in emerging markets and developing economies. Today’s tools are costly, closed, and hard to use, with modelling studies taking months or years when they should take weeks or days. We designed Scenario Builder to meet this challenge, so energy planners and investors can make better decisions, faster.

Our funding currently comes from a range of US and EU foundations, including the Quadrature Climate Foundation, Google.org, the Sequoia Climate Foundation, Bloomberg Philanthropies, and the European Climate Foundation.

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 and adaptability.

About The Role

The purpose of this role is to keep our communications and marketing engine running at full speed. You’ll sit at the intersection of marketing, storytelling, and design to build TransitionZero’s brand and drive adoption of Scenario Builder. To do this you’ll own the content calendar, social channels, website updates, and day-to-day asset creation while partnering closely with insight analysts, modellers, engagement leads, and the product team.

While experience in the energy transition or climate space is a plus, we also welcome candidates with backgrounds in finance/business journalism, or data-driven storytelling.

This is a hybrid role, based out of our London office, reporting to the Head of Content.

Responsibilities

About You

You are a highly proactive, high‑agency individual with a deep commitment to climate action and the energy transition. You are passionate about using compelling communication to accelerate change and drive the mission of a data‑focused non‑profit to win in its vertical.

We value ownership, accountability, and a culture of feedback. As such, you are self‑aware, detail‑oriented, and bring a relentless problem‑solving attitude to your comms work. You thrive in cross‑functional environments, enjoying the collaboration required to work with modellers, market experts, and product teams to find and craft compelling stories.

A high level of adaptability, curiosity, and a willingness to experiment is essential as you manage multiple workstreams and seek innovative ways to translate complex data into engaging public‑facing content.

Skills & Experience

Seniority level

Mid‑Senior level

Employment type

Contract

Job function

Marketing

Industries

Software Development

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