Ariel Hou Email & Phone Number

New York, Ny, Us

Working with the Atlas Growth teams (1&2) and experimentation at MongoDB as a whole.• Planned and implemented a new core service, Config Service, and migrated a major consumer to using it with minimal disruptions. Initiative spanned 3 major projects, with Java, Go, Javascript, and K8s elements, and 4-6+ engineering streams for a year.• Spec'ed, developed, and released a Javascript SDK package for running MongoDB Atlas experiments, with Vanilla JS and React functionality. Package contains extensive documentation for ease-of-use for internal clients. Is the primary way to run Atlas experiments implemented in JS.• Collaborated closely with Data Analytics and engineering stakeholders to design and develop a "global holdout" feature for the experimentation platform. Managed 4 other engineers to deliver the feature on-time, including extensive manual and automated testing and documentation.• Designed, developed, and documented an end-to-end analytics testing framework to confirm (via Cypress E2E tests) our Analytics events health for critical events. As part of this project, introduced mock server capabilities to the main Atlas repo.

New York, Ny, Us

Engineer on the Atlas Growth 1 team, which designs and implements data-driven tests to improve customer acquisition and onboarding for the Atlas (MongoDB's Cloud-based DBaaS) product.• Ideated, spec-ed, implemented, and completed A/B experiments for Atlas• Created RFC (request for change) doc and POC PR to add Jest to the Atlas codebase. Got stakeholder buy-in and approval, leading to the merge of the POC. Over the next 6 months, made 10+ follow-up PRs to allow Jest to be used seamlessly (alongside legacy Mocha tests) in all parts of the codebase. Followed up with compiling a codebase-wide unit test coverage report--a first for the repo.• Architected a full-stack internal A/B testing platform: front-end NextJS app + authentication/authorization mechanism + a MongoDB Realm orchestration layer (a Node 10-like environment) + Atlas cluster + endpoints for app consumers/producers + a CICD pipeline using Evergreen. Implemented with a project team of 5 other engineers. App contains functionality to set up and monitor A/B tests in MongoDB Atlas.• Created and led department-wide discussion and approval on RFC to coordinate large frontend changes between teams in Atlas. • Supported the proposal for and assisted with staffing a new team: Frontend Platform. Rotated on the team during its first quarter (Q1 2022) to build team momentum. Led an in-depth Bazel POC to determine fit for use as a frontend build tool.• Active participant in bi-weekly Cloud Web Chapter (department-wide frontend discussion guild) • Stack: React, Typescript, Mocha/Chai/Sinon/Jest, Java 8, MongoDB products (MongoDB, Atlas, Realm, Evergreen)

Mclean, Va, Us

(individual contributor: non-people-manager track)Still on debit card self-service team, but spent about 50% of my time on platform- and Bank-wide initiatives.• Managed the initiative to rewrite all the self-service Debit features (9 features) in Angular 7/8/9 with ngRx and contributed most of the code. Focus was on sustainable code patterns and streamlining/updating Product logic.• Active code reviewer of not just my team's repos, but also the customer-facing application repo which spans all of Capital One. Reviewed PRs for ~15 teams who contributed to the Bank's features for code quality and patterns. Code reviews represented 50% of my Github activity in 2019 and 2020.• Socialized and followed-up with individual Bank teams about Platform-wide technical asks and initiatives, such as upgrading versions of software and new security practices, and provided suggestions on how to implement. Ran a weekly meeting with developers across Bank teams. Served as a primary developer contact point for Bank.• Developed developer productivity enhancement tools (such as dashboards and Github hooks) as side-projects to reduce pain points in using Enterprise tools or adhering to Enterprise initiatives. After achieving stable MVP candidates, shared and presented these tools in department-wide forums so others can use the tools. One tool was being considered for company-wide use.• One of the primary participants in Bank's Front-End Guild, which spaned across all teams in Bank tech and met twice a month. A regular presenter of topics. Suggested and helped organize first speed competition for the Guild (trying to recreate a mockup in vanilla HTML/CSS in 30 minutes).• Top 10% of interviewers in 2019 and 2020 (1-3 interviews/week), and engaged in refining the interview process.

Mclean, Va, Us

Continued work on the debit card self-service team, but with a greater focus on cross-team collaboration and discussion.• Developed CICD UI application pipeline that runs 4 thorough suites of tests to confirm production-readiness of code before pushing to prod (uses Jasmine, Protractor, Cucumber, Docker, Selenium, mountebank, Applitools)• Architected complex branch representative-facing feature to allow bank branches to instantly print physical debit cards• Advised other feature teams on how to develop their features within the larger Capital One self-service application• Participated and oftentimes led several weekly and bi-weekly forums to determine front-end coding practices and coordinate architecture and organization patterns across the company (multiple teams in multiple locations)• Organized in-person office-wide AWS learning sessions with AWS account reps to inform architectural/dev-ops best practices and educate about new AWS services. First event featured 8 different topics across 2 days with 10-30 people per session. (Mar 2019)• Spearheaded the first use case for DynamoDB in our application for the Change Spending/ATM Limit self-service feature

Mclean, Va, Us

Worked on online debit card features, used by millions. Features allow users to activate, lock/unlock, change pin, order a new card, and track their card delivery. Projects include:• Building a reusable tooltip component in 98% vanilla JS for company-wide consumption, with different position configurations: explicit, breakpoint-specified, and "smart" positioning based on viewport visibility• Development of new self-service feature, (Order Debit Card) from creating the Node endpoints to implementing the design and UX in Angular• Updating functionality to support self-service for multiple product types (360 and retail)• Working with business to conduct necessary due diligence to adhere to strict internal, legal, and accessibility guidelines• CICD deploys using an automated pipeline that uses Terraform, Docker, and AWS to deliver code from release branch all the way to production environment• Coordinating with other Bank teams on cross-team releases and contributing to cross-team repos, in addition to our own• Promoting our APIs within the company and proving our ability to serve new, non-traditional consumers (e.g. the mobile app) in a way that will lead to more cross-business partnerships in the future• Certified AWS Solutions ArchitectFull stack tech, including: Angular 1.x, Nodejs, testing frameworks (Jasmine, Mocha, Chai, Protractor), Java, HTML/SCSS, AWS

Cincinnati, Ohio, Us

Software Engineer on the UI Dev team for company that made it possible to refinance student loans at credit union rates.Major projects: • LendKey Network (LKN) redesign (http://lkn.lendkey.com), launched late March 2016. Given mockups, coded the HTML/CSS and adjusted existing Angular behavior.• Singlehandedly built lightweight LKN demo from scratch in Angular, mimicking real LKN behaviors, for use in conference demos and on-boarding.• Built first React component (a file uploader) used in primary app, incorporating AJAX submission and drag and drop functionality.• Integrated A/B testing into LKN with Optimizely and a custom asset-swapping frameworkTech: jQuery, Angular, React, HTML/CSS/SCSS, Ruby on Rails, Wordpress

Zurich, Ch

• Collaborated with 3 other traders to trade and oversee risk in the Agency CMO Derivatives books (market value >$1 billion) in 9-person Agency CMO group (market value ~$10 billion) ranked #1 on the Street by clients• Individually responsible for the Agency Derivative oddlot book: one of few dedicated market-makers in the sector o Produced revenue of +1.1mm in 2013, +2.1mm in 2014, and +1.6mm as of July 2015• Interfaced with clients (money managers, hedge funds, some retail investors) daily to discuss trading opportunities and valuations• Kept and maintained extensive databases of market color and data to mine for trends in a non-exchange-traded sector o Wrote VBA macros to clean and consolidate data into digestible time series• Singularly handled demanding month-end client pricing for Agency Derivatives—average of 2,500 securities/month• Submitted and tied out new deal structures in detail-oriented monthly primary issuance process with Fannie Mae, Freddie Mac, and Ginnie Mae• Involved in the analyst recruiting process as the group’s desk coordinator for summer interns for 2 years

Zurich, Ch

• Worked closely with 4 Directors creating, testing, and marketing trading strategies for ~$3 billion of managed assets• Wrote VBA scripts to generate operational efficiencies: one macro reduced monthly portfolio update times by 6x• Developed and analyzed backtests to identify improvements to strategies• Served as the liaison with an auditing team; concluded a cornerstone audit on 2 years of the primary strategy’s returns

Individually developed projects from mock-up designs to final working sites for a variety of clients• Learned ActionScript in 1 week to construct a requested Flash game• Developed a portfolio site from design (Photoshop) to code (HTML/CSS, PHP, MySQL) for an education media consultant• Designed and coded 2 Wordpress themes for 2 campus clubs

Designed and coded primary business websites for startup telecom company specializing in WiMAX technology, using HTML/CSS, PHP, and MySQL

Bachelor'S Degree, Finance, Computer Science

Full Stack Web Development