Vetted Object-Oriented Programming (OOP) Professionals

CalvinMatthew Nava

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Senior Unity Developer specializing in games, AR/VR/XR, and interactive mobile experiences

Germany11y exp

“Unity generalist with VR-focused optimization experience who replaced a bloated third-party IK/rigging plugin by building a custom DOTS/Burst multithreaded system, reporting ~200% performance gains and a noticeably smoother VR experience. Has multiplayer experience with Unity Netcode (and some Photon Fusion exposure) and uses AI tooling (Rider AI) to speed up refactoring and documentation.”

Matyas Gonczol

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Senior Unity & XR Developer specializing in VR/AR/MR and immersive educational apps

Budapest, Hungary10y exp

“Unity developer with deep hands-on experience building a tricky 2.5D shoot-'em-up collision system that reconciled 2D gameplay constraints with 3D world movement and mixed orthographic/perspective camera math. Also implemented LAN multiplayer for a Monopoly thesis using Unity Legacy Networking (NetworkView/RPC) and has production exposure to Photon PUN; emphasizes clean, optimized code and structured ownership with code reviews.”

Yuhao Lin

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Junior Full-Stack Software Engineer specializing in web platforms and cloud-based systems

Boulder, CO1y exp

“Full-stack engineer with hands-on document extraction experience: built an end-to-end handwritten OCR pipeline using OpenCV + EasyOCR with spellcheck post-processing and a Tkinter-based manual correction workflow. Also brings practical distributed-systems and e-commerce reliability experience (REST orchestration, retries, logging, Stripe idempotency), and is candid about not yet shipping LLM agents to production.”

“Unity/C# tech lead specializing in multiplayer systems and networking reliability: built a transaction/prediction-based multiplayer inventory system using snapshots/deltas that eliminated duping and supports very large item transfers via RPC. Also implemented an LLM-driven localization pipeline (SGLang on DGX Spark with Gemma Translate) with automatic OpenAI fallback and human QA, and has shipped VR work on Meta Quest 3 with cross-platform input abstraction (mobile/VR/web).”

“Independent builder of production-grade systems: shipped an end-to-end URL shortener with JWT auth, Redis rate limiting/caching, Postgres, Docker, and real-time analytics, and separately architected a Redis-backed distributed task queue handling 1000+ tasks/min. Demonstrates strong distributed-systems instincts (atomicity, retries/DLQ, idempotency, heartbeats) plus a focus on maintainable code and self-documenting APIs (FastAPI/OpenAPI, versioned routes).”

“Backend engineer who built a production retrieval-augmented narrative analysis platform for 100-page screenplays using a Node/Express orchestrator and a Python/FastAPI AI engine, including a key redesign from disk-based uploads to in-memory streaming to eliminate Windows file-lock failures. Also led a refactor of a municipal vehicle tracking system into a C-based distributed engine handling 4M+ daily packets with 99.99% data integrity and automation that reduced manual ops by 50%.”

“Frontend-leaning full-stack engineer who has rebuilt a high-volume order management system in Next.js/TypeScript for 6000+ active orders and also owned end-to-end product/data architecture in Firebase/Firestore. Stands out for strong performance instincts, type-safe frontend architecture, and pragmatic 0→1 execution across UI, APIs, and data pipelines.”

“Backend engineer specializing in event-driven/serverless systems and Python/FastAPI APIs. Built a scalable PDF-to-structured-data pipeline on AWS (S3, Lambda, Step Functions, Textract, DynamoDB, SNS) with strong observability (p50/p90/p99) and reliability patterns (idempotency, retries/DLQs), and has led zero-downtime migrations using feature flags, dual writes, and incremental rollouts.”

“Unity developer (3+ years) focused on mobile multiplayer/casual games, combining technical leadership with game design ownership. Has shipped modular gameplay systems, integrated monetization/analytics, and built a custom Unity Editor plugin for configurable combat/animation montage workflows (masking + blending). Not experienced with VR/Meta Quest yet.”

“Unity/VR developer who has shipped games for Meta Quest and built a game (Remix Heroes) largely solo, handling everything from game design and UX/UI to level backgrounds, gameplay, and backend networking features like social events and leaderboards. Experienced with Quest 2/Quest 3 testing and uses AI tools to review system designs and evaluate solution options.”

“Frontend engineer who led an end-to-end dashboard web app build, starting from UI sketches and user stories through design documentation and a proof-of-concept to align stakeholders. Uses a modern React/TypeScript stack (TanStack Query/Table/Form, shadcn/ui, Tailwind) with Zod validation, ESLint + CodeRabbit PR checks, and Vercel Analytics for performance monitoring.”

“LLM engineer/data analyst who built a production RAG QA assistant over the Jurafsky & Martin NLP textbook to reduce hallucinations and provide explainable, source-grounded answers. Experienced with LangChain/LangGraph orchestration, retrieval optimization (embeddings, vector DBs, caching), and rigorous evaluation/monitoring (Retrieval@K, A/B tests, telemetry/drift). Previously communicated analytics insights to non-technical stakeholders at GS Analytics using Power BI and simplified reporting.”

“Built and shipped a production multi-agent LLM system at Solena that automated internal project intake, validation, reporting, and stakeholder communications using Python, SQL, and LangChain, with strong emphasis on reliability (structured validation, safe defaults, logging, and state tracking). Also used LangGraph to orchestrate a multi-step video summarization pipeline, and has experience partnering with non-technical stakeholders to define “completion” criteria and reporting needs.”

Maciej Wiktor

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Senior Unity Developer specializing in game engineering and real-time systems

5y exp

“Unity game developer who has built a distinctive combat/aiming system for a golf-like game with zombie battles, plus a structured tutorial experience with rich visuals. Has multiplayer experience using Mirror and Unity Netcode for GameObjects, focusing on efficient client-server synchronization, and uses GitHub Copilot to speed up tasks like HLSL shader creation.”

Sanskar Pandey

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Junior Full-Stack Java Developer specializing in FinTech microservices

OH, USA3y exp

“Full-stack engineer with production experience building a real-time order tracking system using React + Firebase/Firestore, emphasizing audit-friendly data modeling, state-machine-based status transitions, and strong post-launch ownership (performance, security rules, reliability). Demonstrated measurable frontend performance gains by isolating real-time updates to dynamic components and applying memoization, plus backend reliability patterns (idempotency, retries) and SQL query/index optimization validated with EXPLAIN ANALYZE.”

Pedro Henrique Lima Cabral

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Senior Unity Game Programmer & Technical Artist specializing in tools, shaders, and VR/AR

São Paulo, Brazil10y exp

“Unity/C# game developer with hands-on experience building a core garment-deformation mechanic for a fashion/styling game, including custom mesh, shader, and editor tooling. He also brings practical exposure to LLM-powered NPC chat, Photon/Unity Netcode multiplayer, and cross-platform shipping considerations across VR, PC, and mobile.”

“Software developer who actively integrates AI coding tools like ClaudeCode, Codex, and ChatGPT into day-to-day development for brainstorming, planning, and reducing boilerplate work. They show thoughtful awareness of agent limitations such as hallucinations and use markdown-based project context files to improve output quality.”

“Software engineer with a pragmatic, production-oriented approach to AI-driven development, using AI to accelerate coding while keeping human oversight on correctness, architecture, and final decisions. Has hands-on experience with agent-style AI workflows and has led the design and coordination of AI-agent systems with a strong emphasis on reliability, performance, and end-to-end execution.”

“Built and shipped an end-to-end AI-powered portfolio chatbot, owning the React frontend, FastAPI backend, and FAISS-based retrieval layer. Demonstrates hands-on full-stack product thinking with attention to UI performance, TypeScript maintainability, and post-launch iteration on response relevance and speed.”

“Software/product engineer who owns customer-facing internal platforms end-to-end, with deep experience building data pipeline health and data quality tooling (near-real-time alerting and ops dashboards). Strong in React/TypeScript + Python REST architectures and microservices with RabbitMQ, emphasizing reliability patterns (idempotency, DLQs, correlation IDs) and fast, safe iteration via feature flags, testing, and observability.”

“Unity/C# developer who built a non-AR prototype feature for an AR hide-and-seek game that became a preferred gameplay mode: smooth touch-driven camera orbit and zoom without image distortion. Demonstrates practical camera/FOV tuning and player-experience-driven iteration; has introductory exposure to Photon Fusion concepts (C# attribute-marked network methods).”

“Frontend engineer with experience leading an end-to-end website rebranding at Caseware, coordinating across product, design, DevOps, and backend teams while integrating CMS, third-party services, and backend APIs. Built SaaS dashboard interfaces in React + TypeScript and emphasizes quality and scale through unit/integration testing pipelines plus performance work like responsive image optimization, lazy loading, SSR, and React memoization.”

“Software engineer who builds workflow-centric products end-to-end, including a customer-facing module on the Trident AI content platform and an internal content workflow tool adopted as the default process. Strong in TypeScript/React + FastAPI architectures and in scaling event-driven microservices with RabbitMQ, emphasizing reliability (idempotency, DLQs) and observability (correlation IDs) to reduce outages and debugging time.”

“Software engineer with experience across edtech, live gaming, and an AI document intelligence platform, delivering end-to-end customer-facing features and production backends. Built secure, automated live-session scheduling integrating Zoom and TalentLMS (JWT/RBAC, idempotency, transactions) cutting setup time from ~3 minutes to under 1 minute, and optimized real-time gaming dashboards/APIs with query tuning, caching, and CDN improvements (~60% latency reduction under peak load) on AWS.”