📍
London, UK

Junior Python Developer

1 year experience
Energy & Climate
Software engineering
Posted:
December 29, 2025

CarbonChain

Emissions data platform for supply chains
54.7
Palpable Score
Apply >view company >

About us

Decarbonizing the economy requires a granular, real-time view of where emissions come from and how they might be reduced. We’ve built software to automate the carbon footprinting of supply chains. Banks, traders, and manufacturers use our product to tame the complexity of international supply networks, identify the most carbon-intensive parts, and find lower-carbon alternatives.

As a Junior Python Developer on the Customer Engineering team, you will be the bridge between the data our customers provide and our platform. You’ll be responsible for initial customer data integration, then continue to partner with them to keep their supply chain data flowing into our platform smoothly. You’ll troubleshoot issues, fine-tune our ingestion pipelines, make improvements to data quality so that customers can derive maximum value from our platform.

Responsibilities

Use our existing codebase to map physical production and transportation routes for our customers into digital supply-chain representations

Onboarding of new customers’ data into our platform

Maintain and extend our Python-based ingestion pipelines and data processing utility functions

QA of data uploads to identify and resolve bugs, anomalies or other data quality issues

Ad-hoc data analysis to support requests from our customers and internal teams

Collaborate with our Product and Engineering team to scope and implement system improvements, our carbon accounting specialists to ensure robust emission factor coverage and correct application of methodologies, and our Customer Success Managers to demonstrate value and drive adoption of our product

What we are looking for

1 year working in a technical role, such as a data engineer or python developer, ideally in a commercial setting

Degree in Computer Science or a related field, or equivalent professional experience

Solid Python skills, familiarity with data-pipeline frameworks (e.g., Airflow, dbt or similar) and proficient querying SQL databases (we use PostgreSQL and BigQuery)

Strong ownership; someone who thrives on taking full responsibility for their work.

Curious mindset; thrives on diving into logs, API responses, and error traces to isolate root causes

Familiarity with carbon accounting standards and/or exposure to manufacturing, supply chain or sustainability domains is a plus

Your Growth at CarbonChain

CarbonChainer’s receive a ton of great benefits, including:

28 days of annual leave

Home office set up allowance of £500

£2,000 annual learning allowance

Team lunches once a week in the office

£1,000 annual remote work allowance

Office gym and cycle to work scheme

Generous parental leave policy

Private healthcare

You will need to have the right to work in the UK and be willing to work in our central London office at least 3 days a week.

CarbonChain values diversity and inclusion and welcomes applications from candidates with diverse backgrounds.

If you think your skills and experience match what we’re looking for and you’d like to join the next Climate Tech industry unicorn, please get in touch!

You can find out more about interviewing at CarbonChain at https://www.carbonchain.com/careers/interview-process.

CarbonChain values diversity and inclusion and welcomes applications from candidates with diverse backgrounds.

If you think your skills and experience match what we’re looking for and you’d like to join the next Climate Tech industry unicorn, please get in touch!

You can find out more about interviewing at CarbonChain at https://www.carbonchain.com/careers/interview-process.

About the company

CarbonChain

Company overview
CarbonChain builds carbon accounting software focused on supply chain and Scope 3 emissions for carbon-intensive sectors like metals and energy. CarbonChain sells a platform used by manufacturers, commodity traders, and banks to measure emissions, report them, and plan decarbonisation actions. CarbonChain positions the work around climate regulation readiness (including CBAM) and granular emissions data that can be used in commercial decisions. CarbonChain is a venture-backed climate software company.

Locations and presence

CarbonChain is headquartered in London, with some hiring in New York for customer-facing roles. CarbonChain describes a remote-work-friendly setup with home office and remote-work allowances, while several London roles also state an expectation of being in the London office multiple days per week.

Palpable Score

54.7
/ 100
CarbonChain is transparent about how interviews work and offers practical support like a learning allowance and remote-work budgets, which helps early-career candidates understand expectations and keep growing once hired. The main issue is access: the public job board is dominated by senior roles and the company does not show an internship or new-grad pathway right now. Outcomes are also hard to score because public evidence on progression and retention is thin and mixed.
view full company profile >

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