Corneliu Lancu

Available to hire

Senior Software Engineer with ~13 years of experience delivering scalable web applications and enterprise platforms across international environments.

About

Senior Software Engineer with ~13 years of experience delivering scalable web applications and enterprise platforms across international environments. I specialize in full-stack engineering with modern JavaScript/TypeScript, backend systems, and cloud-native architectures.

I’ve led and optimized production systems end-to-end—improving UI performance and API efficiency, building microservices and integrations, and integrating AI automation into enterprise products. I also enjoy mentoring teams, driving CI/CD and reliability improvements, and tackling complex performance and system-design challenges.

  • Joined June 2026

Industry experience

  • Software & Internet
  • Financial Services
  • Professional Services
  • Media & Entertainment
  • Education
  • Other
  • Computers & Electronics
  • Gaming

Projects · 1

Software engineers build the core of Amplemarket.
The three co-founders have an engineering background (João, Luís and Mica studied Physics & Computer Science at university) and deeply value the work that engineers are responsible for.
Our main goal is to build a sales platform that helps companies grow. Our product requires us to solve a myriad of difficult engineering problems very diverse in nature: from working on NLP models that can extract information from a thread of emails to scaling an elasticsearch cluster holding terabytes of data.
We are deeply aware of the importance of our tool to our customers and look for people that share that vision.
Among other things, our stack includes:
Ruby on Rails, React, PostgreSQL, Elasticsearch, Redis

We don’t require you to have experience in our stack to apply.
Our customers use Amplemarket on a daily basis. We keep and enrich valuable data that is critical for sales reps’s success. We empower our users to engage with their prospects in the most personalized way. Luckily, you are reading this, and when you join Amplemarket will have even more jaw-dropping features.
As an early member of engineering team, you will build new user experiences and product features that are critical to our customers. You will work cross functionally in a fullstack team and in close collaboration with product, design, customer success, support, and sales functions.

You will:
Work directly with the co-founders
Have lots of autonomy and impact
Ship new features every week
Own central, complex components of the application
Implement a scalable, stable, and user-friendly product that can handle our current growth
Collaborate with experienced software engineers in the design, development and maintenance stages of the product
Drive and deliver on our product roadmap, turning rough specs into features
Find elegant solutions to usability problems

About you:
You have experience designing and maintaining complex/large/growing systems
When reviewing new system designs or code, you naturally think about what can go wrong: edge cases, failure modes, bottlenecks, migrations, releases, interesting metrics, etc
You love debugging and finding the root cause of production issues
You are proactive, when you see something broken you jump on it to fix it or suggest improvements
You strive to use best practices and always test the software that you deliver

Work experience· 8 roles

Senior Software Engineer · AdobeMar 2025 – Jun 2026 · 1 yr 4 mos

Architected and deployed a new multi-tenant SaaS product using Next.js and Node.js, boosting deployment velocity by 40%. Implemented secure role-based access control (RBAC) with JWT for enterprise-grade security. Built a multi-threaded payment processing pipeline with Stripe Subscription Billing and resilient webhook handling using idempotency keys. Integrated OpenAI API for an AI-powered search feature, reducing query resolution time by 60% through prompt engineering and caching. Migrated from a monolith to microservices on Railway, reducing API latency from 210ms to 80ms. Created real-time analytics dashboards and optimized frontend performance with Next.js and Tailwind CSS. Established automated CI/CD pipelines from GitHub to Vercel and Render, and mentored junior engineers on TypeScript/React best practices.

Full Stack Engineer · AdobeFeb 2025 – Jun 2026 · 1 yr 5 mos

Architected 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 · HappeningSep 2022 – Feb 2025 · 2 yrs 6 mos

Designed 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 · GoProOct 2017 – Sep 2022 · 5 yrs
Software Engineer · Deutsche BankFeb 2016 – Oct 2017 · 1 yr 9 mos
Web Software Developer · dcs plusSep 2014 – Feb 2016 · 1 yr 6 mos
Software Engineer · OPTI SystemsFeb 2014 – Aug 2014 · 7 mos
Software Engineer · NewrosoftJun 2013 – Feb 2014 · 9 mos

Education· 21

Master's in Project Management · SNSPA2015 – 2017
Master's degree, Computer Science · University of Bucharest2013 – 2015
Bachelor's degree, Computer Science · University of Bucharest2010 – 2013
Project Management · SNSPA2015 – 2017

Certifications and awards· 29

Building AI-Powered Search with MongoDB Vector Search2025 – 2026
MongoDB Schema Design Patterns and Anti-patterns Skill Badge2025 – 2026
Blockchain: Learning Solidity2020 – 2026
UX Design: Overview2021 – 2026

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