Vetted C# Professionals

Ahmed Khalafalla

Screened

Entry-level Software Engineer specializing in full-stack and backend development

Boston, MA1y exp

“Frontend/full-stack web developer with hands-on experience building browser-based applications including a social-style platform and a banking web app. Stands out for practical performance optimization work—separating frontend/backend architecture, designing APIs, reducing unnecessary rendering, and improving UI clarity through iterative user testing.”

“Full-stack engineer who has owned an operations/reporting dashboard end-to-end, spanning React/TypeScript frontend architecture, ASP.NET Core APIs, and SQL data access. Stands out for combining strong UI performance optimization with pragmatic backend decisions, post-launch monitoring, and 0→1 startup platform building that improved API speed by 35% while supporting 2,000+ transactions per hour.”

“Unity gameplay engineer with 10 years in game development who has shipped dozens of mobile titles and built high-impact shared systems, including a custom touch framework still used across 100+ ABC Mouse mini games. At Battle Creek Games, they paired strong Unity engineering with AI-assisted workflow automation, cutting a 4-day car setup process to 30 minutes and delivering a partnership update that drove over $1M in a single weekend.”

“Unity game developer who built a quest system for a Hearthstone-like card game where completing quests upgrades and expands card abilities, increasing build flexibility and improving player experience. Has general networking experience via socket servers and HTTP requests, and uses Cursor/ChatGPT to accelerate animation work while keeping core logic and code quality under manual control.”

Arunkumar Chockaiyan

Screened

Principal Software Architect specializing in enterprise platforms across FinTech, healthcare, and biotech

Burlingame, CA28y exp

“Senior full-stack product engineer with a track record of turning complex enterprise requirements into scalable platforms, including inventing a configurable multi-variable bidding system that expanded a B2B auction product from inventory liquidation into strategic sourcing for Fortune 100 clients. Also brings recent hands-on AI agent work, plus experience translating scientific software into usable web products and more efficient backend services in the gene-editing domain.”

“Backend/full-stack engineer who has owned production retail and order/inventory systems end-to-end, using Spring Boot microservices with Kafka event-driven workflows. Strong in production correctness patterns (idempotency, retries/DLQs, schema versioning) plus observability (Prometheus/Grafana) and developer-facing API design (Swagger, OAuth2/JWT, versioning/deprecation). Also built TypeScript/React SPAs and cited ~40% UI performance improvement.”

“Engineering leader focused on developer platforms and identity: led a 5-person team building a multi-tenant IAM framework extending Duende IdentityServer, including governance, API standards, and multi-language SDKs. Drove major API architecture improvements by introducing GraphQL alongside REST, cutting client calls from 4 to 1 and reducing payload size by 60% within 6 months, with strong emphasis on stability (semver, E2E tests, feature flags, blue-green deploys).”

“Game-studio QA tester with full lifecycle experience (feature kickoff through release/live updates), strong in structured test planning, edge-case discovery, and disciplined defect tracking. Partners closely with engineers via Jira/standups, providing detailed repro steps, logs, and evidence, and builds regression coverage to prevent recurring UI/data-loss issues.”

“Frontend engineer who has owned delivery as the only FE developer on a client project (Eltel), stepping into UX/UI and occasionally supporting backend while modernizing a React codebase incrementally. Known for replacing heavy legacy third-party UI libraries with simpler custom React components to improve performance and maintainability, and for working effectively in Scrum teams with strong QA practices (e.g., high unit test coverage and Playwright E2E where possible).”

Okiror Erasmus Mugadya

Screened

Entry-Level Unity Developer specializing in XR/VR simulations

Remote

“Unity developer with hands-on experience building a mixed reality game prototype for Meta Quest in a bootcamp and a self-directed car driving simulation featuring multi-environment/weather scenarios and UI driving guidance. Demonstrated practical problem-solving by fixing AI vehicle navigation issues through a custom C# pathing approach, and uses ChatGPT to speed up routine coding work.”

Nehemiah Dias

Screened

Senior Frontend Engineer specializing in design systems and real-time SaaS platforms

San Francisco, CA11y exp

“Full-stack product builder who has repeatedly taken end-to-end ownership in startup environments, including building PromoFlow solo and architecting the entire software backbone for Hard Drive. Particularly strong at turning ambiguous product needs into scalable systems, from real-time Firebase apps to shared component libraries and redesigned Postgres architectures, while also bridging non-technical founders, design, and engineering.”