# Colin Greybosh > Software Engineer @ Sigma Location: San Francisco, California, United States Profile: https://flows.cv/colingreybosh Software Engineer with academic and professional experience in the fields of software engineering, computer science, and electrical engineering. I pride myself on providing clear communication regarding technical topics, being able to collaborate in a team, and leveraging these abilities to build thoughtful software systems. ## Work Experience ### Software Engineer @ Sigma Jan 2024 – Present | San Francisco, California, United States Developing secure authentication, authorization, and provisioning systems with SAML, OAuth, and SCIM. Increased SAML test coverage by creating an end-to-end test harness for the Assertion Consumer Service. Enhancing authentication observability by delivering actionable metrics, traces, and error run-books, reducing debugging time for the technical support team. Achieved a 240x improvement in P99 latency for SCIM by optimizing memory usage and SQL access patterns, enabling enterprise customers to sync thousands of users reliably and reducing support escalations. Partnering with enterprise prospects and product teams to shape roadmap priorities and deliver solutions that address their needs. Interviewing engineering candidates, developed new evaluation criteria, and mentoring junior engineers in system design, technical communication, and security best practices. Enhancing programmatic access and AI capabilities by designing and implementing thoughtful REST APIs. ### Graduate Research Assistant @ MIT EECS Jan 2022 – Jan 2024 | Cambridge, Massachusetts, United States Empowered learners to grow their computational thinking skills by designing and developing tools that allow teachers and curriculum developers to build StarLogo Nova projects that require you to think about key computing concepts like abstraction and modularity. ### Graduate Teaching Assistant @ MIT EECS Jan 2023 – Jan 2023 | Cambridge, Massachusetts, United States Helped administer an undergraduate course on the fundamental principles and techniques of software development, teaching students how to write software that is safe from bugs, easy to understand, and ready for change. ### Software Engineer @ Sigma Jan 2022 – Jan 2022 | San Francisco, California, United States Increased the actionability and accessibility of Sigma notifications for users by developing an end-to-end notification delivery system that sends messages within the application instead of over email. ### Software Engineer @ Fidelity Investments Jan 2021 – Jan 2021 | United States Increased observability of account management software by implementing telemetry systems such as real-user metrics, tracing, and performance metrics to track application health and reduce debugging effort. Reduced team onboarding overhead by collaborating with multiple Agile squads to create a comprehensive, end-to-end system diagram that documents service calls between RESTful APIs and databases to enable new developers to become efficient team members in shorter periods of time. Recommended sustainable development patterns to increase platform debuggability by standardizing system logs in order to enable comprehensive tracking and data collection of user experiences. ### Software Construction Lab Assistant @ Massachusetts Institute of Technology Jan 2020 – Jan 2021 | Cambridge, Massachusetts, United States Provided debugging and course content help to students by holding Socratic discussions about good Object-Oriented Programming and Software Engineering practices. Improved course materials by discussing the efficacy of reading exercises, providing staff solutions, and testing the class's software infrastructure. Helped to transition course materials from a Java to Typescript focus by providing feedback on practice problems, testing new readings, and play-testing new problem sets. ### Software Engineer @ Kupenda for the Children Jan 2020 – Jan 2020 | New Hampshire, United States Worked with a team to provide important information about local schools, health facilities, and dispensaries to people working in rural Kenyan communities by deploying a GPS-enabled mapping website on AWS. Helped to streamline the user experience for volunteers reporting information to Kupenda through the CommCare mobile platform by iterating on UI/UX elements and communicating with users. Increased the functionality of the administrative reporting system of CommCare by adding programmatic elements that track users' statuses in the system and alert directors of past due forms and well-being checks. ### Undergraduate Research Assistant @ MIT Media Lab Jan 2019 – Jan 2020 | Cambridge, Massachusetts UROP Student with the MIT Media Lab City Science group. Supported experiments comparing the performance of job scheduling algorithms by developing a simulator that models multiple forms of transit demand and autonomous vehicle supply within the Boston-Cambridge area road network. ### Sales Associate @ Weis Markets Jan 2016 – Jan 2019 | Hazleton, Pennsylvania Supported order fulfillment for online grocery orders by managing calls from customers. Provided customer service for tracking orders, resolving delivery, and related issues for 300+ products. Operated and maintained self-checkout POS systems and full-service registers ## Education ### Master of Engineering - MEng in Electrical Engineering and Computer Science Massachusetts Institute of Technology Jan 2022 – Jan 2024 ### Bachelor of Science - BS in Electrical Engineering and Computer Science Massachusetts Institute of Technology Jan 2018 – Jan 2022 ### Dual Enrollment in Engineering Penn State University Jan 2018 – Jan 2018 ### High School Diploma Hazleton Area Academy of Sciences Jan 2014 – Jan 2018 ### High School Diploma Hazleton Area High School Jan 2014 – Jan 2018 ## Contact & Social - LinkedIn: https://linkedin.com/in/colingreybosh - Website: https://colingreybosh.me --- Source: https://flows.cv/colingreybosh JSON Resume: https://flows.cv/colingreybosh/resume.json Last updated: 2026-03-23