Jon Lim Email & Phone Number

New York, Ny, Us

San Francisco, California, Us

San Francisco, California, Us

Seattle, Wa, Us

Seattle, Wa, Us

New York, Ny, Us

• Led design and development of “valuations” service in Go. Worked closely with product owner to define product requirements of high-priority project for Q2 2020, created technical specs based on requirements, designed service architecture and overall valuation system flow.• Developed “open search” feature for integrated search service in Go. Collaborated with project team to define end-to-end functionality of user-facing features, designed API contracts with frontend engineers, and created tickets to cover scope of work. Open Search project delivered ahead of schedule, with thorough unit and integration tests.• Optimized memory usage of legacy Go service with history of daily crashes. Reduced frequency of crashes from out of memory events by 95%. Presented findings to engineering organization and contributed to internal Go code style guide for better service development practices.• Introduced better testing practices and guidelines to team when building features for services, improving test coverage of services owned from ~25% to 90% overall.• Contributed new data mocking practices for faster and more deterministic testing of services, implementing changes as part of microservice templates to be used for future new services. Testing patterns introduced reduced overall reliance on flaky environment data, and allowed for better developer confidence when adding features or making changes.• Created documentation templates and guidelines for end-to-end service documentation, adopted by engineering organization for providing stronger developer onboarding experience.Technologies: Go, Python, MySQL, Microservices Architecture, Docker, JIRA, Confluence, GitLab, GitLab CI

Toronto, Ontario, Ca

• Lead team of 3 developers for end-to-end payroll reporting project, designed and built system for calculating payroll deductions using health benefit selections of employees. Project finished on time as estimated in the quarterly roadmap plan, with thorough documentation and test coverage.• Collaborated with developers to translate business requirements for projects into technical specifications, created technical designs, built implementation plans, and distributed work to team, resulting in increased accountability and ownership from team.• Improved documentation, automated testing, and end to end health checks for overall health benefits platform, resulting in 100% accuracy of health benefits and costs for 10,000+ members during open enrollment.Technologies: Go, React, MongoDB, JIRA, Confluence, Docker, CircleCI

Toronto, Ontario, Ca

• Lead backend development for health insurance benefit pricing engine. Collaborating with product team to define requirements and scope of deliverables, creating and presenting technical designs, implementation of features from requirements, and thorough unit and integration testing.• Created technical design for changes required in health insurance benefit pricing engine and presented to internal architecture review, including technical and business impact of changes, project dependencies, and implementation schedule• Started internal “Testing Working Group”, to improve overall software quality by establishing and improving automated end-to-end testing practices• Lead efforts around defining role of “Project Owner” for quarterly projects and epics, defining roles and responsibilities of a project lead and soliciting feedback from other teams to achieve buy-in of outlined processes• Contributes to code reviews and technical discussions regularly, ensuring that work is technically correct and also fits the business context of projects, as well as suggesting improvements to automated testing and documentation

Sunnyvale, California, Us

• Lead the frontend development for "eDiscovery" software. Defining scope of deliverables, coordination of actionable items for all team members, and implementation of features from requirements and mockups. Vastly improving process for completing deliverables in a timely and thorough manner.• Identified and implemented performance optimizations for computationally heavy parts of codebase, improving performance speeds by up to 50%.• Established new process for better code testing, leading to earlier identification of implementation defects, building strong foundation for feature development, and safer upgrade paths for future Ember versions.• Spearheaded complete upgrade of very large Ember project, from Ember 1.12 to 1.13, and subsequent upgrade to Ember 2.8, necessitating changes across entire codebase to adhere to new methodology and best practices established in newer version of Ember.• Developed interactive data visualization functionality, using d3.js, for displaying trends and behaviours. Built process for consuming large amounts of data, creating the appropriate visualization, and allowing for user interaction to dive deeper into data.• Built efficient and reusable front-end components and systems for enterprise data archiving and governance web application using Ember.js, Handlebars, Sass, and HTML/CSS• Collaborated with product managers to understand user requirements, created and scheduled actionable work items, and performed regular check-ins with product for verification• Performed code reviews with team members to ensure high code quality, communicate best practices, and suggest optimizations or alternative solutions• Supported team members with difficult implementation issues using extensive knowledge of Ember codebase and product requirements• Communicated with quality assurance team to verify implementation defects, create suitable fixes and patches, and follow-up to ensure issues are resolved

Toronto, Ontario, Ca

Building software that visualizes, understands, and post-processes g-code for 3D printers to be able to print in multi-colours.• Designed and developed desktop software app that loads g-code, visualizes it into a 3D object on-screen, and then parse and process it for 3D printers to print with multi-colour using The Palette. Current built using Node.js, Electron, Mithril.js, and Three.js.• Designed and developed process for checking product firmware version, downloading the latest firmware if necessary, and flashing the new firmware onto an Arduino board, using Node.js, and the avrgirl-arduino and serialport libraries• Modified product firmware, written in C++, to extend functionality of product capabilities and refactor existing functionality to be more efficient• Created and implemented process for generating milestone goals and objectives, scoping and managing actionable items for milestone requirements, and providing milestone post-mortems for reporting and review purposes• Created and implemented complete style guide for creating actionable items, naming development branches, and creating proper version control commit messages