Available to hire
Hi, I’m Laurynas Karvelis, a senior backend/full‑stack developer with over a decade of hands‑on experience building scalable, reliable web platforms and services. I specialize in Node.js, TypeScript, serverless architectures, and data‑driven systems, always aiming for clean code, solid architecture, and measurable business impact.
I enjoy turning complex problems into robust solutions, collaborating across teams to deliver features end‑to‑end from concept to production. I’m passionate about mentoring peers, contributing to open source, and helping startups grow with pragmatic engineering and disciplined delivery.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Language
English
Fluent
Lithuanian
Fluent
Portuguese
Intermediate
German
Intermediate
Russian
Intermediate
Work Experience
Founder & Author, Full-stack Developer at Zero Ad Network
October 1, 2024 - PresentCreated an entirely microservice-based public client facing platform and Chrome extension enabling users to browse partner sites without ads or trackers, with unified monthly subscription and Stripe payments; integrated BullMQ for queue processing, Bun.js with hono framework, Ed25519 crypto suite, Cloudflare Tunnel/Workers ecosystem, Docker and Postgres; built serverless components and front-end features; connected Stripe payments and other infra.
Senior Backend Developer at Pushologies
September 1, 2022 - September 30, 2023Created an AWS serverless microservice platform to process well‑documented REST endpoints; implemented a queuing system enabling push notifications to tens of millions of devices; built a video/image processing subsystem based on S3 events; optimized core components to process 40x more data while reducing processing times by 16x; unit/integration tests; robust Git‑Flow CI/CD workflow; technologies included Serverless, TypeScript, PostgreSQL, DynamoDB, SNS, Kinesis, API Gateway, EC2, CloudFront, Cognito; DynamoDB/SNS/Kinesis data pipelines.
Senior Backend Developer at Pushologies
November 1, 2021 - January 31, 2022Part of multi‑period engagement delivering backend improvements, scalability enhancements and data pipelines; led performance optimizations and testing strategies across services.
Senior Backend Developer at Pushologies
March 1, 2020 - August 31, 2021Architected and implemented backend services, improved reliability, and contributed to data processing pipelines; collaborated with frontend teams to deliver end‑to‑end features.
Senior Backend Developer at NearSt
March 1, 2019 - August 31, 2019Developed server/backend enhancements for a high‑traffic nearby products platform; automated onboarding workflows using AWS Lambda; improved shop inventory processing flow with Kinesis/Node.js streams; refactored AWS Lambda services for readability, maintainability and testability.
Senior Frontend Developer at 90 Percent of Everything (90percent of everything.io)
April 1, 2018 - September 30, 2018Redesigned a greenfield frontend for a pioneering online money/gaming app using modern JS/SPA approaches and tooling; delivered performance improvements and maintainable UI modules.
Head of Search (Full-Stack) at ZuGo Services Ltd.
February 1, 2011 - February 1, 2012Led search/frontend initiatives for a high‑volume user base; built a PHP backend starter platform, including frontend features, with vanilla JS and initial dynamic UI experiments.
Senior Frontend Developer at Essence Digital
November 1, 2015 - February 1, 2016Frontend work on large digital campaigns; collaborated with design/UX and backend teams to deliver polished web experiences.
Senior Frontend Developer at The Press Association
May 1, 2014 - August 1, 2014E‑commerce/News platform frontend development; delivered responsive UI components and performance improvements.
Senior Frontend Developer at Signal Noise
April 1, 2014 - May 1, 2014Frontend work for a large adtech/creative agency; SPA enhancements and performance improvements.
Senior Frontend Developer at Gamesys
June 1, 2013 - January 31, 2014Poker/online gaming frontend development; SPA/UX improvements and integration with backend services.
Senior Frontend Developer at Bonza Gaming
October 1, 2012 - February 1, 2013Greenfield React/JS frontend for gaming platform; frontend architecture and prototyping.
Senior Frontend Developer at Bonza Gaming (extension)
March 1, 2013 - July 31, 2013Continuation/extension work on gaming frontend; further feature development and UI polish.
PHP Full-Stack Developer at Analytics SEO
August 1, 2010 - February 1, 2011Backend PHP + frontend work; performance tuning and feature delivery for analytics/SEO tooling.
PHP Full-Stack Developer at Laisvavo Dovana, UAB
April 1, 2009 - November 1, 2009Custom PHP/mySQL platforms; modular frontend/backend integration and multiple client deployments.
Owner & Developer at Made By
April 1, 2007 - March 1, 2009Owner/consultant delivering bespoke websites and marketing solutions; led client requirements and project delivery.
Education
Master's degree at Vilnius University
February 1, 2009 - February 1, 2011Bachelor's degree at Kaunas University of Technology
September 1, 2004 - July 1, 2008Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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