Vassar Labs is an emerging technology startup focused on building climate‑technology platforms that help enterprises monitor, analyze, and act on environmental data. Founded by a group of engineers passionate about sustainability, the company combines expertise in distributed systems, data engineering, and cloud‑native architectures to deliver real‑time insights for carbon‑footprint reduction. With its headquarters in Hyderabad and a culture that encourages open‑source contribution, Vassar Labs has quickly become a preferred destination for fresh talent eager to work on purpose‑driven products. The Java Hireathon 2026 is a talent‑acquisition drive designed to onboard junior software engineers who can contribute to Vassar Labs' backend services. Candidates selected for Track 1 will join a fast‑moving engineering team that builds scalable APIs, processes streaming data, and integrates with NoSQL stores. The role offers a hybrid work model – the selection process starts with a remote online test, followed by an onsite hackathon in Hyderabad, and culminates in two technical interview rounds. Successful hires will be placed on projects that directly impact climate‑tech solutions, providing exposure to cutting‑edge technologies and a chance to make a tangible difference. Key Responsibilities: 1. Design, develop, and maintain Java‑based microservices that power climate‑data pipelines. 2. Implement RESTful APIs and ensure high‑availability through proper testing and monitoring. 3. Write efficient SQL queries and interact with NoSQL databases such as MongoDB or Cassandra. 4. Participate in code reviews, contribute to coding standards, and mentor peers. 5. Build and optimize stream‑processing jobs using frameworks like Apache Flink or Kafka Streams. 6. Deploy and manage services on self‑hosted Linux environments using Git‑based CI/CD workflows. 7. Collaborate with data scientists and product managers to translate requirements into technical solutions. 8. Troubleshoot production issues, perform root‑cause analysis, and propose improvements. 9. Contribute to open‑source tools and internal libraries to foster a culture of shared learning. 10. Stay updated with emerging Java features (Java 8‑21) and best practices in cloud‑native development. Tech Stack: Core Java, Spring Boot (or similar Java web framework), MySQL/PostgreSQL, MongoDB/Cassandra, Git, Linux, Docker, REST APIs, Apache Flink/Kafka Streams, CI/CD pipelines. Growth Path: Fresh graduates start as Software Engineers and can progress to Senior Engineer, Tech Lead, and eventually Architecture roles within 3‑5 years, with opportunities to lead climate‑tech product lines. Why Join Vassar Labs? The company offers a purpose‑driven mission, hands‑on exposure to modern backend technologies, a supportive hybrid work environment, and a clear career trajectory. Being part of the Hireathon also provides a fast‑track entry into a vibrant engineering community that values innovation, collaboration, and sustainability.