Climate Engineering – Python Developer

We are building cutting-edge software and data workflows to identify and analyze the exposure and impact to climate change. Clients from across the capital ecosystem use our integrated data analytical tools indexes and insights for a clear view of the climate transition. We are seeking an outstanding Software Engineer to join our Sustainability & Climate Application Development team in the Budapest offices. As part of a global team you will collaborate in cross-functional teams to build and improve our industry-leading Climate Net-Zero and Sustainability solutions.

• Deliver new features for existing platforms and next-generation Climate applications.
• Monitor analyze and optimize application performance and scalability.
• Collaborate closely with Product Management Research QA DevOps and Infrastructure teams throughout the software development lifecycle.
• Become a member of a software engineering team working with Python Pandas PySpark OpenAPI 3.1 frameworks (FastAPI Flask Django) and MCP tools on a cloud-based big-data infrastructure.
• Implement robust secure and scalable data-driven applications using modern cloud technologies.
• Champion test-driven development and partner with QA UI/UX Product Owners and Architects to ensure high-quality outcomes.
• Ensure on-time delivery of reliable enterprise-grade software solutions.
• Work with the team members to maximize your impact by the efficient usage of the freshest agentic AI developer tooling
• Demonstrate strong debugging troubleshooting and system-level thinking.
• Communicate effectively across teams and stakeholders and lead by example.
• Advocate for sustainable efficient and open-source-based architecture and tooling.

• Strong hands-on experience withPythonand numerical computing libraries such asNumPyandPandas.
• Proficiency in developingRESTful APIsusingFastAPI Flask or Django.
• Experience working withSQL and NoSQL databases including schema design and optimization.
• Familiarity withdata-intensive applicationsand scalable cloud-native architectures.
• Solid understanding and application ofsoftware testing frameworks(e.g. pytest unittest BDD) and CI/CD practices.
• Proficient withGitand modern version control workflows.
• Practical experience withAzure DatabricksSparkPolars or similar analytics platforms.
• Hands-on experience withcloud platforms(Azure Google Cloud) and buildingbatch/ETL/integration pipelines.
• Understanding ofDevOps and security best practices.
• Exposure to or experience withopen-source software ecosystems.
• Experience usingAI/LLM toolsto solve business problems - especially image processing and classification- or to enhance developer productivity.
• Strong communication collaboration and problem-solving abilities.
• Bachelors degree in Computer Science Engineering Mathematics or a related field or equivalent practical experience.

What we offer you

• Transparent compensation schemes and comprehensive employee benefits tailored to your location ensuring your financial security health and overall wellbeing.

• Flexible working arrangements advanced technology and collaborative workspaces.

• A culture of high performance and innovation where we experiment with new ideas and take responsibility for achieving results.

• A global network of talented colleagues who inspire support and share their expertise to innovate and deliver for our clients.

• Global Orientation program to kickstart your journey followed by access to our platform AI Learning Center LinkedIn Learning Pro and tailored learning opportunities for ongoing skills development.

• Multi-directional career paths that offer professional growth and development through new challenges internal mobility and expanded roles.

• We actively nurture an environment that builds a sense of inclusion belonging and connection including eight Employee Resource Groups. All Abilities Asian Support Network Black Leadership Network Climate Action Network Hola! MSCI Pride & Allies Women in Tech and Womens Leadership Forum.

At MSCI we are passionate about what we do and we are inspired by our vision to power better decisions. Youll be part of an industry-leading network of creative curious and entrepreneurial pioneers. This is a space where you can challenge yourself set new standards and perform beyond expectations for yourself our clients and our industry.

MSCI strengthens global markets by connecting participants across the financial ecosystem with a common language. Our research-based data analytics and indexes supported by advanced technology set standards for global investors and help our clients understand risks and opportunities so they can make better decisions and unlock innovation. We serve asset managers and owners private-market sponsors and investors hedge funds wealth managers banks insurers and corporates.

MSCI Inc. is an equal opportunity employer. It is the policy of the firm to ensure equal employment opportunity without discrimination or harassment on the basis of race color religion creed age sex gender gender identity sexual orientation national origin citizenship disability marital and civil partnership/union status pregnancy (including unlawful discrimination on the basis of a legally protected parental leave) veteran status or any other characteristic protected by law. MSCI is also committed to working with and providing reasonable accommodations to individuals with disabilities. If you are an individual with a disability and would like to request a reasonable accommodation for any part of the application process please email and indicate the specifics of the assistance needed. Please note this e-mail is intended only for individuals who are requesting a reasonable workplace accommodation; it is not intended for other inquiries.

To all recruitment agencies

MSCI does not accept unsolicited CVs/Resumes. Please do not forward CVs/Resumes to any MSCI employee location or website. MSCI is not responsible for any fees related to unsolicited CVs/Resumes.

Note on recruitment scams

We are aware of recruitment scams where fraudsters impersonating MSCI personnel may try and elicit personal information from job seekers. Read our full note on