Senior Data Engineer

About The Role GRESB is an industry-led organisation on a mission to provide the financial industry with standardised, validated ESG data on real assets. Investors and managers use that data to allocate capital, and we are changing how we deliver it: from an annual benchmark and static reports towards a continuous, data-first platform. Our data should be easy to access and analyse in both human and automated workflows, instead of arriving once a year as a report. In practice that means consolidating our assessments onto one platform rather than several stacks, with a governed and scalable data model beneath them. It also means publishing our datasets in machine-readable form, so customers can query them and build them into their own workflows. This only works if the data underneath is trustworthy and well defined, for the people using it and for the systems and AI reading it. We are hiring a Senior Data Engineer to build that foundation. What You Will Do You will join our data team, working closely with the Product team. The work is currently split between keeping the annual benchmark running and building the platform that replaces it with something continuous, so you would touch both legacy and greenfield. Build and maintain data pipelines and service that support our yearly evolving standards and methodology, and re-architect or decommission the ones that do notShape the data models and schemas beneath our products, and the serving layers that expose them to reporting and analyticsOwn data quality and reliability through validation, automated testing and production monitoring, to ensure issues are caught as early as possible, never first by the people consuming the dataMake our data discoverable and documented, including definitions, lineage and pipeline logic, so the teams and systems that consume it can self-serveGuide architecture decisions in the areas you own: frame the options and the trade-offs, and bring them to a decision the team commits to. Help raise engineering standards through design and code review Our stack: Python (pandas, polars and fastapi), Parquet on S3 with Athena, Postgres, kubernetes, Terraform, ArgoCD and GitHub Actions. Around it sit a Rails portal, Java application services, and LLM validation on Bedrock. Requirements What we are looking for A track record of building and running data pipelines and services in production, seeing them through end-to-end, and iterating on your approach as lessons emergeStrong Python and SQL, with enough data analysis skill to interrogate a dataset and answer a question with itHands-on experience running systems in a cloud environment: infrastructure as code, containers, and continuous deploymentA solid grounding in data modelling and warehouse designThe ability to take an ambiguous problem from diagnosis through to something shippedComfort with context-heavy work. Our standards and methodology are intricate, and doing this job well means carrying a lot of domain detailA habit of turning agentic tools into workflows the rest of the team adopts, with the judgement to catch what they get wrong If your experience doesn't map exactly onto this list but covers similar ground, apply anyway. And in how you work: You solve it at the system level. You can tell a recurring bug apart from the design that keeps producing it, and you bring the design forward with the impact and a proposalYou lift the people around you. You mentor others through complex work, review carefully, and turn what you learn into patterns the team keeps using. You expect the same scrutiny of your own work Experience in sustainability, real estate, or financial services is a plus. Benefits What we offer Impact you can point at. Sustainability is what GRESB exists for, and the data you build is what investors use to judge the buildings and infrastructure they ownProjects that shape where sustainability data goes next, the room to own them and to change how we work, and a yearly hackathon where you build your own ideaAI tooling provided company-wide, with the expectation that you use it. Agentic tooling is how this team works rather than a pilot someone is running on the sideAn open, international culture and team that enjoys each other's company, with regular socials and activities. A competitive salary that matches your skills and experience + holiday allowance paid monthlyAnnual leave of 25 days + 2 volunteering days off per yearCompany pension planFree public transport to and from the Amsterdam officeFree and healthy daily catered office lunchA generous annual professional development + one-time home office budget About Gresb GRESB is a mission-driven organisation and strategic partner for sustainable and high-performing investments across real assets and climate-critical industries. We help investment professionals mitigate risk and build portfolios that are resilient, efficient, and financially attractive for long-term success. Our Vision: An investment industry that plays a central role in creating a sustainable world. Our Mission: To provide financial markets with actionable sustainability insights, data, and benchmarks. More than 150 global institutional and financial investors with USD 53 trillion in assets under management rely on GRESB to help guide their investment decisions, mitigating risk, improving portfolio quality, and driving long-term financial success. The GRESB team is an energetic group of more than 100 individuals from diverse backgrounds with experience spanning sustainability, data science, software development, real estate, infrastructure, and the capital markets. Most of us work out of our head office in Amsterdam or one of our satellite offices in London, Paris, Berlin, Boston, Singapore, or Sydney. We are passionate about tackling the sustainability challenge by providing the insights that will power the markets of the future and enable investors to allocate the world's capital in a more responsible way. GRESB is a portfolio company of BeyondNetZero, General Atlantic's climate investing platform. GRESB is an equitable, diverse, and inclusive workplace, one at which all workers - regardless of their gender, race, ethnicity, national origin, age, sexual orientation, identity, education, or disability - feel valued and respected. We are committed to a non-discriminatory approach to hiring and provide equal opportunity for employment and advancement in all of our teams and programs.