Communications & Marketing Manager

TransitionZero; Greater London; Hybrid; GBP 40,000 - 55,000; Part time

Job summary

A climate-tech startup seeks a Marketing Content Coordinator to strengthen its brand and promote its solutions. In this hybrid role, you will manage content creation, optimize social media channels, and ensure effective communication across teams. Ideal candidates have a strong background in technical writing, digital content production, and familiarity with sustainability issues. Join a mission-driven organization focused on accelerating climate action.

Qualifications

• Strong writing and editing skills with a focus on clarity and detail.
• Experience in producing digital content in various formats.
• Ability to work with subject matter experts on technical content.

Responsibilities

• Draft and edit content across different formats, including blogs and newsletters.
• Manage updates to the website and optimize for SEO.
• Create visual assets and short video content.

Skills

Content expertise

Technical communication

Digital fluency

Knowledge of analytics tools

Tools

Canva

Hubspot

Google Analytics

Job description

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

• Content creation & editing
  • Draft, edit, and publish explainers, blogs, newsletters and thought‑leadership articles
  • Translate complex data, modelling outputs, and research insights into accessible, rigorous content for our target audience
  • Produce visual assets including infographics, social carousels, short video clips, and multimedia explainers
• Web & social management
  • Manage updates to the website (CMS) and optimise content for SEO & accessibility
  • Produce and schedule content across social channels
  • Track communications analytics and report impact
• Digital & creative production
  • Create assets using Canva
  • Edit short‑form video content for social platforms
  • Support production of data visualisations with market experts & designers
• Media & content coordination
  • Draft press materials and support press outreach to deliver comms‑related grant objectives
  • Maintain and execute a coordinated content calendar
  • Identify opportunities for proactive commentary & brand visibility
• Cross‑team collaboration
  • Work closely with market experts, modellers, product teams, and partners to generate compelling content
  • Support webinars, and product messaging
  • Ensure adherence to tone, brand, accessibility, and editorial standards

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

• Content expertise:
  • Proven ability to translate complex concepts into engaging, accurate content.
  • Strong writer and editor: Write with clarity, precision, and creativity, and have an editor’s eye for structure, grammar, and detail.
  • Hands‑on communications and content production experience within a technical, research‑driven, or mission‑driven organisation (e.g., climate, science, economics, public policy, finance, tech).
• Technical communication:
  • Experience working with subject‑matter experts, researchers, analysts, or data teams.
  • Familiarity with climate, energy, or sustainability issues.
  • Comfortable checking accuracy, context, and nuance when working with charts, quantitative claims, and technical content.
• Digital fluency:
  • Experience producing digital content across multiple formats (written + visual + video).
  • Digital design fluency: Skilled in creating strong visual content (e.g., in Canva) and in short‑form video editing for shaping narrative visuals.
  • Detail‑oriented, organised, and capable of managing multiple workstreams in a fast‑paced environment.
  • Familiarity with web publishing and SEO principles.
• Specialised domain & tools:
  • Experience in B2B/B2G or software‑driven environments.
  • Ability to support data‑visualisation workflows and storytelling.
  • Understanding of analytics tools (e.g., Google Analytics, Mailchimp, Hootsuite, LinkedIn/Twitter dashboards).
  • Know how to use Hubspot & Vercel.

Seniority level

Mid‑Senior level

Employment type

Contract

Job function

Marketing

Industries

Software Development