# Chelsea Wang > Software Engineer II Location: San Francisco, California, United States Profile: https://flows.cv/chelseawang1 As a software engineer with a strong foundation from Carnegie Mellon and experience at high-impact fintech companies like Goldman Sachs and Lead Bank, I bring a deep passion for building scalable, efficient backend systems that solve real-world problems. Over the past 4+ years, I’ve designed and implemented high-availability APIs, microservices, and infrastructure solutions that power financial platforms used by millions. At Lead Bank, I led initiatives that enhanced API performance by 99%, streamlined client communications through automation, and championed collaboration across teams to improve technical outcomes. At Goldman Sachs, I played a key role in the development of a multi-tenant rewards platform, built microservices across the loyalty and promotions ecosystems, and delivered architectural solutions that significantly cut costs and improved scalability. My toolbox includes Java, Go, TypeScript, Python, AWS, Terraform, Kafka, and MongoDB—among others. But beyond the tech, I’m a strong communicator and collaborator who values mentorship, continuous learning, and building software with purpose. I’m always open to connecting with others passionate about technology, financial inclusion, and building systems that make a measurable impact. ## Work Experience ### Software Engineer II @ Lead Jan 2024 – Jan 2025 | San Francisco Bay Area ● Developed multiple internal and external APIs used among several clients for fetching, creating, and updating data ● Designed API specifications including the endpoint and parameters, headers, request body, and response body ● Streamlined client communication by automating the distribution and notification of file run success and failure reports ● Triaged and resolved production issues and promptly communicated the issues and resolutions to clients and PMs ● Led multiple team syncs to refine API designs, explore alternative solutions, and resolve open questions and concerns ### Software Engineer II @ Goldman Sachs Jan 2023 – Jan 2024 | San Francisco Bay Area ● Developed a Rewards platform to support multiple lines of business such as Apple Card, GM Card, and Marcus HYSA ● Implemented microservices that supported API development, multi-tenancy, Kafka messaging, and Wiremock testing ● Monitored, triaged, and resolved urgent production issues and documented incident management post-mortems ● Collaborated with stakeholders, product owners, and QM testers to complete, test, and deploy features end-to-end ● Mentored 2 new joiners and remotely presented knowledge transfer sessions to a class of 10+ onboarding teammates ### Software Engineer @ Goldman Sachs Jan 2021 – Jan 2023 | San Francisco Bay Area ### Software Engineer Intern @ Goldman Sachs Jan 2020 – Jan 2020 | San Francisco Bay Area ● Developed an API routing architecture allowing failover between regions without downtime using AWS and Terraform ● Deployed Terraform modules and implemented AWS Route 53 hosted zones, endpoint services, and load balancers ● Confirmed connectivity to web servers and monitored health and traffic via Amazon CloudWatch logs and metrics ● Presented the architecture design to Tech Leads, SRE and Tech Risk and received approval for implementation ### Software Engineer Intern @ Mastercard Jan 2019 – Jan 2019 | St Louis, Missouri, United States ● Developed a mock data warehouse to generate thousands of random realistic data over time using Docker and Spring ● Increased efficiency by 99% during local testing by eliminating the wait time of requesting data from the DW team ● Built a RESTful Web Service to handle HTTP GET and POST requests for fetching, creating, and updating the data ● Integrated Apache Hadoop, Apache Hive, and Apache NiFi to process and query data and control process groups ## Education ### Bachelor's in Computer Science in Computer Science Carnegie Mellon University ## Contact & Social - LinkedIn: https://linkedin.com/in/chelriver --- Source: https://flows.cv/chelseawang1 JSON Resume: https://flows.cv/chelseawang1/resume.json Last updated: 2026-04-01