# Peter Markoski > Senior Software Engineer at Coinbase Location: Los Angeles, California, United States Profile: https://flows.cv/petermarkoski I'm a Senior Frontend Engineer focused on building high-quality, scalable user interfaces and developer-experience tooling. My work centers around React, React Native, GraphQL (Relay + Federated), and frontend platform architecture that improves the speed, reliability, and confidence of engineering teams. At Coinbase, I lead frontend initiatives for revenue-driving products while architecting our federated GraphQL data layer, improving CI/CD workflows, and developing internal dashboards and tooling that elevate developer productivity. I thrive at the intersection of UX, infrastructure, and product thinking — simplifying complex systems into intuitive, elegant experiences. I enjoy mentoring engineers, partnering closely with design and product, and working within environments that value autonomy, ownership, and thoughtful technical decision-making. Outside of work, I’m passionate about the intersection of technology and audio. I regularly experiment with digital signal processing, creative tooling, and more recently, applying AI to audio workflows to create novel, interactive user experiences. Core expertise: React, React Native, GraphQL/Relay, Federated GraphQL, Frontend Infrastructure, DX Tooling, Data Visualization, WebGL, CI/CD, TypeScript, Go (API collaboration) ## Work Experience ### Senior Software Engineer @ Coinbase Jan 2022 – Present | Remote Lead frontend engineer for International Trade & Simple Derivatives, delivering multiple revenue-driving product launches across React and React Native. Architected Coinbase’s federated GraphQL + Relay data layer, improving performance, ownership boundaries, and developer ergonomics across teams. Designed and built internal tooling, dashboards, and data-driven UI surfaces that streamline developer workflows, improve feedback loops, and increase CI/CD confidence. Enhanced the design system, elevating UX consistency and reducing implementation time across key product surfaces. Owned large-scale refactors of legacy REST pipelines into modern, typed, scalable GraphQL services. Improved developer experience by increasing automated test coverage, refining CI checks, and creating reusable libraries adopted across multiple teams. Partnered with PMs, designers, and security engineers to define product direction, write technical proposals, and align cross-team architecture decisions. Collaborated with backend teams and contributed to Go services powering GraphQL contracts, improving schema clarity and reliability of developer tooling pathways. Mentored junior developers, improving onboarding, engineering quality, and ownership of roadmap items. ### Software Engineer @ ROOM Jan 2018 – Jan 2022 | Remote Led and coordinated a team to deliver routine web updates, ensuring timely and accurate implementation. Collaborated with a 3D modeler to create interactive WebGL experiences, enhancing user engagement. Optimized streaming audio performance, enabling seamless interaction with visuals at a low computational cost. Refactored codebase to a React structure with optimized state management. ### Senior Software Engineer @ Tealium Jan 2021 – Jan 2022 | Remote Expanded internal design system improving frontend team efficiency Refactored "Predict" machine learning product to enhance UX workflow Created data visualization tools utilizing D3 and Recharts libraries Mentored junior developers into mid level engineers ### Software Engineer @ Tealium Jan 2019 – Jan 2021 | Greater San Diego Area Upgraded UI from legacy jQuery to a React and MobX stack, improving performance and maintainability. Developed new platform features, including Cloud Functions, Connector Upgrades, and Data Management. Optimized data flow processes, providing guidance and support for junior developers on the team. Collaborated closely with the design team to create wireframes aligned with project scope and goals. ### Software Engineer @ Expression Networks LLC Jan 2017 – Jan 2019 | Washington D.C. Metro Area / Remote Modernized mission-critical systems in a waterfall environment, aligning with DoD standards to achieve business goals, increase efficiency, and reduce costs. Delivered custom solutions using a unified tech stack of Angular, Elasticsearch, and Node.js. Optimized system performance for complex datasets, leveraging MySQL, MongoDB, and PostgreSQL. Ensured endpoint performance in a highly secure, contained environment. Migrated dashboards from a Java environment to Kibana, integrating deeper into the Elastic stack. Developed in-house tools for process automation, significantly reducing development costs. ### Teaching Assistant @ Trilogy Education Jan 2018 – Jan 2018 | Washington D.C. Metro Area Taught students the fundamentals of JavaScript, databases, and modern web application libraries in an accelerated six-month program. Collaborated with educators at Trilogy Education’s coding bootcamp, sponsored by George Washington University, to deliver a comprehensive curriculum. ### Full Stack Web Developer @ PUBLIC.GROUP Jan 2017 – Jan 2018 | Washington D.C. Metro Area Architected and designed websites for clients Optimized code for efficiency and to meet Google's Progressive Web App Philosophy Developed animations using Three.js, Tween, Particle.js, and Greensock ### Business Development @ PUBLIC.GROUP Jan 2016 – Jan 2017 | Washington DC Researched upcoming local artists, events, and companies to strengthen Public’s clients list Drafted schedules for designers and artists, managing brand launches, and building relationships with journalists and bloggers Oversaw development of and assisting with promotional videos, audio demos, and copy ### Music Programming Coordinator @ Sirius XM Radio Inc. Jan 2016 – Jan 2017 | Washington DC Programmed music for five stations on the SiriusXM platform including Classic Vinyl & Classic Rewind Sustained contact with hosts and talent to ensure content meets the platform’s standards of quality Wrote copy and producing sweepers to be played on air promoting the platform Maintained multiple channels’ Facebook and Twitter pages to bolster social media presence Updating music and imaging databases for numerous channels on SiriusXM platform ### Temp @ Sirius XM Radio Inc. Jan 2016 – Jan 2016 | Washington D.C. Metro Area Edited and mixed hours of audio on the Nineties on Nine and Lithium channels to be ready for broadcast every day Wrote copy and scripts for weekly shows to be referenced by hosts during their programs Reviewing broadcast logs and metadata within Dalet and Zeta daily to maintain quality control on SiriusXM platform Sat in on interview recordings to learn various sound board models and recording techniques used at SiriusXM Developed and pitched two SiriusXM channel concepts utilizing Music Master and artists’ social media presence ### Assistant @ Kreeger Studio Jan 2015 – Jan 2016 | Washington D.C. Metro Area Assisted engineers in setting up microphones, patch bays, and Pro Tools sessions Troubleshot and resolved Pro Tools errors Logged hardware errors within Microsoft Excel to be sent to head of music department Facilitated communications between students and session musicians Cleaned studio space, zeroing out console, and external hardware at end of day Bias ### Intern @ Bias Studios Jan 2015 – Jan 2016 | Springfield, Virginia Set up microphones for recording sessions Assisted Clients in DAW transfers and setting up Ableton performances for studio use and recordings Created CDs for private distribution, mailing hard drives and equipment to session musicians Maintained a hospitable environment for clients and staff ### Entertainment Coordinator @ NBCUniversal, Inc. Jan 2014 – Jan 2014 Scheduled meetings, travel, and dinners for two executives within NBC’s Alternative Programming Department. Created write-ups for show promos, researching talent for development, and overseeing day-to-day office duties. Greeted celebrities and high-level executives while catering to their needs. ### Page @ NBCUniversal, Inc. Jan 2014 – Jan 2014 • Temped in entry-level positions for various departments within NBC Universal and subsidiary companies. ### Temp @ Friedman Personnel Agency Jan 2014 – Jan 2014 | Greater Los Angeles Area Covered reception, assistants’ desks, and other entry level positions for companies in the greater Los Angeles area ### Intern @ Illumination Entertainment Jan 2013 – Jan 2014 | Santa Monica, California •Broke down and covered scripts, organized concept art for upcoming projects, and conducted administrative tasks •Covered reception desk and assistant’s desk, greeting and providing hospitality for high level executives ### Intern @ Straight Up Films Jan 2013 – Jan 2013 •Researched potential projects, covered scripts, administrative tasks, created booklets for marketing, created designs and banners for company webpage, worked phones ### Intern @ United Talent Agency Jan 2012 – Jan 2012 •Assisted and handled all needs, tasks, and assignments for Richard Klubeck and team of agents during Cannes Film Festival 2012 ### Production Assistant @ Running Dialogue Productions Jan 2011 – Jan 2012 •Edited independent film projects and advertisements, rendered sequences, and completed tasks related to editing and sound design ### Intern @ Universal Music Group Jan 2011 – Jan 2011 • Regulated accounts for Artists & Repertoire (A&R) • Maintained budgets and regulated funding for general marketing projects ### Intern @ Downtown Music LLC Jan 2011 – Jan 2011 •Created and designed website to broaden social media presence of artists and foster awareness of their real time activities ### Intern @ Dick Clark Productions Jan 2010 – Jan 2010 •Delivered show pitches •Conducted research on target markets including relevant celebrities and created PowerPoint presentations for pitches •Supported team with 2010 American Music Awards Broadcast ## Education ### Master of Arts (M.A.) in Audio Technology American University Jan 2015 – Jan 2016 ### Bachelor of Arts (BA) in Communications University of Miami Jan 2011 – Jan 2013 ### Bachelor of Arts (BA) in English Literature University of Miami Jan 2011 – Jan 2013 ### Undergraduate in Film/Cinema/Video Studies Colorado College Jan 2009 – Jan 2011 ## Contact & Social - LinkedIn: https://linkedin.com/in/peter-markoski --- Source: https://flows.cv/petermarkoski JSON Resume: https://flows.cv/petermarkoski/resume.json Last updated: 2026-03-22