Available to hire
Hi, I’m Corneliu Lancu, a Senior Software Engineer with 13+ years of experience building and scaling full-stack applications, payment infrastructure, and automation workflows for global enterprises and fast-growing platforms.
I excel at turning complex operational challenges into simple, reliable solutions. I enjoy collaborating with product and design teams to ship consumer-grade experiences, optimize performance and security, and drive multi-market growth across web and mobile products.
Skills
Experience Level
Expert
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Language
Romanian, Moldavian, Moldovan
Fluent
English
Fluent
Work Experience
Full Stack Engineer at Adobe
February 1, 2025 - June 1, 2026Architected and shipped a full-stack AI-powered customer workflow platform using React and Node.js. Built scalable Python FastAPI microservices that handled a 40% increase in document processing requests. Integrated complex third-party payment processing with Stripe for seamless recurring billing. Implemented real-time collaboration features using WebSockets and Redis, and established role-based access control with audit trails for 20+ enterprise clients. Modernized the frontend build pipeline to Vite, reducing build times from 4.5 minutes to 55 seconds. Implemented automated notification workflows with Celery and Redis. Led code reviews and CI/CD practices with GitHub Actions, improving time-to-market for features by 25%.
Senior Software Engineer at Happening
September 1, 2022 - February 1, 2025Designed a serverless event-ticketing marketplace on AWS Lambda and DynamoDB, supporting 50,000+ concurrent users during peak events with zero downtime. Built a GraphQL API with Apollo Server unifying data from 10+ microservices. Drove a migration to a microservices architecture using Docker and Kubernetes. Re-architected the frontend with Next.js for SSR, boosting SEO and Lighthouse scores. Developed a real-time operations dashboard with WebSockets and D3.js, mentored four junior engineers, and optimized Elasticsearch and PostgreSQL queries while introducing Redis caching to offload reads and increase throughput.
Senior Software Engineer at GoPro
October 1, 2017 - September 1, 2022Led development of a globally distributed user-generated content marketplace using React and Spring Boot. Architected a video transcoding pipeline with AWS Step Functions and SQS, reducing processing time by 45%. Implemented Redis caching to offload 70% of reads and improved API throughput. Built an advanced media search interface with Elasticsearch and led a modular frontend migration to a React/Redux architecture. Ensured strong security posture and championed CI/CD practices with GitHub Actions and Jenkins. Orchestrated data pipelines with Apache Kafka.
Software Engineer at Deutsche Bank
February 1, 2016 - October 1, 2017Developed and maintained core backend services for high-volume financial transaction processing (10k tps) with 99.99% uptime. Built internal REST APIs to integrate with external data providers and optimized relational schemas (PostgreSQL/Oracle) for regulatory reporting. Implemented a monitoring/alerting solution using the ELK stack and contributed to a secure authentication/authorization system for internal banking apps. Participated in a modernization effort, refactoring legacy code to modular .NET Core/C# services.
Web Software Developer at dcs plus
September 1, 2014 - February 1, 2016Developed and maintained dynamic data-driven web applications for retail clients using PHP, JavaScript, and MySQL. Created a real-time inventory dashboard with AJAX/REST, improving data reconciliation efficiency. Optimized MySQL queries, enhanced server-side caching, and managed AWS hosting for 20+ client apps. Collaborated with design teams to ensure pixel-perfect UI and introduced automated testing (Selenium, PHPUnit) increasing test coverage and reducing regressions.
Software Engineer at OPTI Systems
February 1, 2014 - August 1, 2014Contributed to the development of a large-scale ERP system using C#/.NET. Implemented modules for HR and project management, including data import/export via SSIS, resulting in significant time savings. Optimized SQL queries, participated in bi-weekly sprints, and delivered Windows Forms apps and backend services to support internal business functions.
Software Engineer at Newrosoft
June 1, 2013 - February 1, 2014Designed and implemented full-stack web solutions for e-commerce clients using PHP and LAMP. Built responsive public-facing websites and secure REST APIs for third-party integrations (Stripe, shipping providers). Improved application performance and reduced post-release defects through troubleshooting and code maintenance.
Education
Master's in Project Management at SNSPA
January 1, 2015 - January 1, 2017Master's degree, Computer Science at University of Bucharest
January 1, 2013 - January 1, 2015Bachelor's degree, Computer Science at University of Bucharest
January 1, 2010 - January 1, 2013Project Management at SNSPA
January 1, 2015 - January 1, 2017Master's degree, Computer Science at University of Bucharest
January 1, 2013 - January 1, 2015Bachelor's degree, Computer Science at University of Bucharest
January 1, 2010 - January 1, 2013Master's degree in Project Management at Scoala Nationala de Studii Politice si Administrative (SNSPA)
January 1, 2015 - January 1, 2017Master's degree, Computer Science at University of Bucharest
January 1, 2013 - January 1, 2015Bachelor's degree, Computer Science at University of Bucharest
January 1, 2010 - January 1, 2013Qualifications
Building AI-Powered Search with MongoDB Vector Search
January 1, 2025 - June 17, 2026MongoDB Schema Design Patterns and Anti-patterns Skill Badge
January 1, 2025 - June 17, 2026Blockchain: Learning Solidity
January 1, 2020 - June 17, 2026UX Design: Overview
January 1, 2021 - June 17, 2026Building AI-Powered Search with MongoDB Vector Search
January 1, 2025 - June 17, 2026MongoDB Schema Design Patterns and Anti-patterns Skill Badge
January 1, 2025 - June 17, 2026Blockchain: Learning Solidity
January 1, 2020 - June 17, 2026UX Design: 1 Overview
January 1, 2021 - June 17, 2026Building AI-Powered Search with MongoDB Vector Search
January 1, 2025 - June 17, 2026MongoDB Schema Design Patterns and Anti-patterns
January 1, 2025 - June 17, 2026Blockchain: Learning Solidity
January 1, 2020 - June 17, 2026UX Design: 1 Overview
January 1, 2021 - June 17, 2026Blockchain: Learning Solidity
January 1, 2020 - June 17, 2026Blockchain: Learning Solidity
January 1, 2020 - June 17, 2026Industry Experience
Software & Internet, Financial Services, Professional Services, Media & Entertainment, Education, Other
Skills
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Expert
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