Frontend Developer, Carbon Zero SaaS

last updated June 22, 2026 6:33 UTC

zero44 GmbH

HQ: Berlin, Germany

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**Time zones:** SBT (UTC +11), GMT (UTC +0), CET (UTC +1), EET (UTC +2), MSK (UTC +3)

**YOUR MISSION**
Zero44 is a B2B SaaS startup building digital tools for the shipping industry. Our goal is to reduce their carbon footprint and help the industry achieve carbon zero by 2050.

Following a successful first year, strong interest across the industry, and new investment, we’re expanding our team and broadening our product features.

If you’re passionate about protecting the planet and helping a fascinating, centuries-old industry transition to carbon zero by creating outstanding digital tools, this could be the right opportunity for you.

In this role, you’ll be the point where our product team and technical team come together to deliver a high-quality outcome. You’ll collaboratively lead the full product development process, from design and development through deployment and ongoing maintenance.

We’re still early-stage, so our tech stack is evolving quickly. We’re looking for someone who sees this as a chance to make a real impact.

**Our current tech stack**
– Ruby, Rails, and Sorbet for the backend API
– Sidekiq for background processing
– Postgres as the database
– Terraform to manage infrastructure
– TypeScript, TailwindCSS, and React for the frontend

**YOUR PROFILE**
As a frontend engineer, you’ll build product features from initial idea through to fully working functionality.
– You’ve previously built complex, feature-rich web applications using end-to-end JavaScript/TypeScript.
– You have a proven track record of designing and developing interfaces that stand the test of time.
– You care about UI quality and understand UI development as a discipline.
– You’re comfortable making technical decisions in the fast-paced, constantly changing environment of a startup.
– You can hand off effectively from designers and design tools (e.g., Figma).

**Personality**
– You follow tasks through from start to finish.
– You can work independently while also collaborating well with others.
– You understand the value of keeping things simple and flexible.
– You speak fluent English and communicate exceptionally well.
– You have a good sense of humour and are a great team player.

**WHY US?**
– Create customer solutions with a purpose: help customers manage the transition to carbon zero—a challenge as significant for shipping as the shift from sailing ships to steamships in the 20th century.
– Join a growing company and help shape and lead our carbon trading offerings.
– Work directly with the founders of zero44.
– Be part of a positive, inspiring culture built on trust, empowerment, and constructive feedback.
– Enjoy flexible home office policies and working hours.
– Get a chance to ride on one of these beautiful ships when they’re near you.
– Work in a great office in central Berlin, Prenzlauer Berg!

**ABOUT US**
ZERO44 was founded in January 2022. Our mission is to provide the maritime industry with digital solutions to reach carbon zero. We’re a Berlin-based software company combining a unique team of software and company builders with a strong passion for the maritime industry. We’re backed by Flagship Founders, a company builder focused on digitising the maritime sector. We believe the planet needs action now. The shipping industry still has a long journey ahead to meet its ambitious climate targets. We want to help with our brains, hands, and hearts.

Apply info ->

To find out more about this job, please visit this link

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