Work at CarbonTool
We are a team that has delivered 500+ green building certifications over 15 years. Now we continuously build the software sustainability managers actually need. If that is the kind of work you want to do, read on.
Since 2010
delivering sustainability expertise
930+ projects
certified sustainable
6,204,601 tCO2e
tracked across all scopes
The people who
do the work
Our Mission
Carbon accounting, reporting, and decarbonization should be as natural as financial reporting. Something every company does without friction, without wasted months and without dreading the process. We started CarbonTool because we believe
sustainability management deserves better tools.
Open Positions
We are a team that has delivered 500+ green building certifications over 15 years. Now we continuously build the software sustainability managers actually need. If that is the kind of work you want to do, read on.
Bucharest-based, hybrid with 2 days per week from our office near AFI Cotroceni.
Key Responsibilities
- Architect, build, and maintain a modular, multi-tenant SaaS backend using Python 3.11+, Django 4.2+, and Django REST Framework (DRF).
- Build and ship responsive, user-facing features end to end, working across the frontend and the APIs that power it.
- Take ownership of REST API design, ensuring clean data modeling, comprehensive documentation (OpenAPI/drf-spectacular), and robust business logic separated into appropriate service layers.
- Optimize database performance by writing efficient PostgreSQL queries, managing complex migrations, indexing, and utilizing advanced ORM techniques.
- Develop, manage, and scale asynchronous workflows, external integrations, and background processing using Celery and Redis.
- Enforce strict entity-scoped data isolation, role-based authorization, and session/OTP authentication within a multi-tenant architecture.
- Champion code quality by writing comprehensive automated tests (pytest, factory-boy), keeping views thin, and delivering small, reviewable pull requests.
Required Technical Skills & Qualifications
- Experience: Proven mid-to-senior level experience building and operating production-grade web applications across the full stack.
- Backend Stack: Deep, hands-on expertise with Django and DRF, including serializers, permissions, custom actions, and API lifecycle management.
- Frontend: Strong JavaScript experience and hands-on work with a modern web framework (Vue, React, Angular, or similar), including component-based architecture and consuming REST APIs.
- Database: Strong PostgreSQL knowledge, spanning schema design, transaction handling, and query tuning. NoSQL knowledge is considered an advantage.
- Asynchronous Processing: Solid practical experience implementing and debugging background tasks with Celery and Redis.
- Testing & Tooling: Strong commitment to automated testing methodologies and experience with local development workflows using Docker, Poetry, and modern linters (e.g., Ruff).
- Architecture: Ability to reason about performance, scale, and operational reliability while working within modular, domain-driven codebases.
Bonus / Nice-to-Have
- Frontend Depth: Experience with TypeScript, modern build tooling, and state management in single-page applications.
- Domain Experience: Background in data-heavy domains (sustainability, analytics, reporting) or handling complex import/export workflows and large file processing.
- SaaS Architecture: Deep understanding of multi-tenant systems, soft-delete patterns, and polymorphic models.
- Integrations: Experience integrating external providers (ERPs, AI APIs, complex third-party services).
You will be the first point of contact for our CarbonTool platform users. When a company starts calculating their carbon footprint, you guide them through the process: setting up their organisational boundary, configuring emission sources, uploading data, and interpreting results. You will also conduct product demonstrations for prospective clients and maintain the emission factor database that powers every calculation. This role combines sustainability domain knowledge with client-facing SaaS skills — ideal for an early-career sustainability professional who wants hands-on product experience.
Key Responsibilities
- Onboard new organisations onto the platform: account setup, emission source configuration, reporting boundary definition.
- Guide clients through their carbon footprint calculation process: data collection, evidence requirements, factor selection.
- Handle first-level support: answer platform usage questions, troubleshoot data entry issues, escalate technical bugs.
- Maintain and update the emission factor database: annual updates from published government and industry sources.
- Maintain template libraries for decarbonisation initiatives and climate targets.
- Conduct live product demonstrations for prospective clients via video call.
- Respond to inbound leads: qualify interest, schedule demos, follow up.
- Manage trial accounts and gather user feedback.
- Build and maintain a knowledge base for common support questions.
Required Skills & Qualifications
- BSc in Environmental Science, Sustainability, Engineering, or related field.
- Basic understanding of greenhouse gas accounting: Scope 1, 2, and 3 concepts, organisational boundaries, emission factors.
- Strong Excel / spreadsheet skills.
- Excellent verbal and written communication — ability to explain technical concepts to non-technical audiences.
- Romanian + English (B2 or higher for English).
- Comfortable with video conferencing and screen sharing for demos.
Bonus / Nice-to-Have
- Experience with CSRD, EU Taxonomy, or corporate sustainability reporting frameworks.
- Previous experience in a client-facing SaaS role: support, customer success, or pre-sales.
- Familiarity with published emission factor databases (DEFRA, EPA, ADEME).
- Basic understanding of Life Cycle Assessment (LCA).
- Experience with CRM or pipeline management tools.
Location & Logistics
- Location: Romania (Bucharest preferred).
- Employment Type: Full-time.
- Experience Level: Mid-Level (2–5 years of relevant professional experience).
- Education: Bachelor's degree or equivalent higher education qualification.
- Language Requirements: Advanced English proficiency (written and spoken).
- Working Style: Ability to work effectively both independently and as part of a collaborative team.
- Tools & Environment: Modern development environment with access to AI-assisted tools and technologies.
Bucharest-based, hybrid with 2 days per week from our office near AFI Cotroceni.
Key Responsibilities
- Extract, clean, and analyze complex, medium-to-large scale datasets from diverse internal and external sources to uncover actionable trends and insights.
- Design, build, and maintain interactive dashboards, automated reports, and data visualizations that monitor key performance indicators (KPIs).
- Conduct in-depth exploratory data analysis (EDA) and quantitative research to support strategic decision-making, product direction, and business initiatives.
- Translate complex statistical findings into clear, compelling narratives and recommendations for both technical and cross-functional stakeholders.
Required Technical Skills & Qualifications
- Experience: Proven professional experience as a Data Analyst, with a strong track record of independently researching and analyzing medium-to-large datasets.
- Data Querying: Advanced proficiency in SQL for complex querying, data aggregation, and transformation across relational databases.
- Programming for Analysis: Strong hands-on experience with Python (specifically libraries like Pandas, NumPy, Matplotlib/Seaborn) or R for statistical computing, data wrangling, and automating analytical workflows.
- Statistical Rigor: Solid foundation in applied statistics, hypothesis testing (e.g., A/B testing methodologies), and quantitative research techniques.
Bonus / Nice-to-Have
- Cloud & Modern Data Stack: Experience querying and working within cloud data warehouses (e.g., Snowflake, Google BigQuery, AWS Redshift) and utilizing data transformation tools like dbt.
- Big Data Ecosystem: Familiarity with distributed computing frameworks (e.g., Apache Spark) for handling exceptionally large datasets.
- Advanced Analytics: A foundational understanding of predictive modeling, forecasting, or applied machine learning concepts.
- Data Visualization: Deep expertise in building insightful and optimized dashboards using industry-standard BI tools & spreadsheets.
We are looking for a dynamic, results-driven Marketing Specialist & Sales Support who will actively contribute to building our brand and accelerating the sales pipeline. The ideal candidate blends creativity with analytical thinking and knows how to translate marketing strategy into concrete actions that generate leads and support the sales team.
Marketing & Communications
- Plan and execute online and offline marketing campaigns (email, social media, SEO/SEM, events).
- Create and manage content across all digital channels: website, LinkedIn, Instagram, Facebook.
- Coordinate the production of marketing materials (brochures, presentations, banners, video).
- Monitor and report on campaign performance (KPIs, ROI, engagement).
- Manage relationships with external agencies for communications, design, and media.
Sales Support
- Prepare sales enablement materials: pitch decks, one-pagers, case studies.
- Administer and update the CRM with relevant client and opportunity information.
- Qualify and distribute inbound leads generated through marketing campaigns.
- Collaborate with the sales team to align messaging and go-to-market strategy.
- Organise and coordinate participation in trade fairs, conferences, and business events.
Analysis & Reporting
- Conduct market and competitive analyses to identify opportunities.
- Prepare monthly and quarterly reports for management.
- Track industry trends and propose strategic adaptations.
Requirements — Experience & Education
- Degree in Marketing, Communications, Business Administration, or a related field.
- Minimum 2 years of experience in a similar marketing and/or sales support role.
- Proven experience managing digital campaigns and social media channels.
- Experience with CRM tools.
Technical Skills
- Strong knowledge of social media platforms and marketing automation tools.
- Familiarity with Google Analytics, Google Ads, and Meta Business Suite.
- Ability to create professional presentations (PowerPoint, Canva, or similar).
- Basic knowledge of SEO and email marketing.
- English — advanced level (written and spoken).
Soft Skills
- Excellent communication and interpersonal skills.
- Strong organisational skills and ability to manage multiple projects simultaneously.
- Proactive mindset, initiative, and solution-oriented approach.
- Attention to detail and analytical thinking.
- Ability to work both independently and as part of a team.
Nice to Have
- Basic graphic design knowledge (Adobe Suite, Figma).
- Experience with e-commerce platforms or marketplaces.
- Google, Meta certifications.
What We Offer
- Competitive salary package, negotiated based on experience.
- Meal vouchers and private medical benefits (Regina Maria).
- Dynamic, young, and innovation-focused work environment.
- Real opportunities for career growth within the company.
- Team building activities and company events.
Location & Contract
- Location: Romania (Bucharest preferred; remote candidates based in Romania will also be considered).
- Employment Type: Full-time.
- Experience Level: Mid-Level (2–5 years of relevant professional experience).
- Education: Bachelor's degree or equivalent higher education qualification.
- Language Requirements: Advanced English proficiency (written and spoken).
- Working Style: Ability to work effectively both independently and as part of a collaborative team.
Nothing that fits yet?
If you have a background in sustainability, carbon methodology, software or data and you think you belong here, send us a note. We read them.
Ready to transform
scattered data into clear growth ?
A reliable tool to measure carbon footprint, achieve sustainability goals and take actions against climate change. A reliable Achieve sustainability goals and take actions against climate change.