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Hands on builder, fractional CTO/Architect. 25+ years of US tech experience. Full stack with data intensive backend experience. Multi domain expertise, 0 -> 1 startup stacks, AI prototype cleanup for production, cloud, storage, embedded, autonomous vehicles, regulated industries. Problem solver with using tech and team leadership skills. Open to fractional and contract opportunities. US B2B invoicing available.

Costa Walcott is a software architect and full-stack developer with extensive experience building user-friendly applications across iOS, Android, web, and backend systems. They are proficient in Swift and Kotlin for mobile development, Node.js for backend, and Angular for frontend. Costa emphasizes clean architecture, performance, testing, and maintainable code, and is committed to staying current with modern best p…

Profile has a strong background in system software, primarily with ARM architecture and low-level programming. Currently works in low-latency/high-frequency trading. Interests include low-level programming, functional programming, distributed systems, formal modelling, web UI tooling, and command-line. Open to opportunities in system software or anything adjacent to these interests. The candidate is based in UK/Indi…

Sinisa Mikulic is a Senior Frontend Engineer with 14 years of experience, specializing in helping startups grow from pre-revenue to Series A. He has a proven track record of building web products, often as the first or lead frontend hire, and has worked remotely from Europe for the past six years. His key achievements include building international payments and features for Glean AI that led to first revenue, workin…

The profile is a backend engineer with extensive experience across various industries, including telco and fast-moving startups, where they scaled user bases from 200K to 2M. They are currently enhancing infrastructure and developing features for an online game with millions of daily active users. Proficient in Java, Python, Node/TS, and cloud technologies like AWS, Lambda Serverless, GCE, and Kubernetes, along with…

Svilendobrev has been making software for over 36 years, gaining extensive experience across numerous technologies and domains. They are hands-on and skilled in data+work-flows, UI/UX, testing, reverse engineering, methodology, process, management, culture, and leadership, including building companies and teams from scratch. They are looking for interesting work with interesting people, potentially in roles such as …

Highly experienced full-stack engineer with a strong background in front-end (React, MUI, Mantine, TypeScript/JavaScript since the mid-90s) and back-end development (.Net, Node/Deno, Rust, C#, Bash). Proficient with relational and non-relational databases, and operating systems including Windows, Linux, and MacOS. Expert in configuring full CI/CD workflows to production and building scalable services. Demonstrates a…

Product Owner, Technical Lead and Enterprise Architect with over 15 years’ experience in finance, airline, healthcare, and public sectors. Worked for both large corporations and co-founded startups. Skilled in full-stack development, enterprise architecture, vendor procurement, and regulatory compliance. Proven track record of leading transformation initiatives, aligning business and IT, and delivering robust, secur…

Specializes in Laravel & Vue.js full-stack development, also proficient across the modern web stack including React, Next.js, Python (Django, FastAPI), and Node.js (Express, NestJS). Possesses strong AI expertise, including OpenAI, Anthropic, and Google AI API integration, agent orchestration, AI-powered tools, web scraping, and anti-bot techniques. Offers services such as custom development, SaaS architecture, perf…

Senior backend engineer with 10+ years of Python experience. Has led projects and teams, set direction and goals, and delivered production systems end-to-end. Comfortable with communication patterns across gRPC, HTTP, Kafka and WebSocket. Can build mobile apps in Flutter for both platforms and write Chrome extensions in React/TypeScript. When needed, goes full stack, from frontend to infrastructure, and has hands-on…

I'm a tech lead with interdisciplinary experience across research, industry, and entrepreneurship. I’ve worked at CERN, collaborated with major industry players, and joined startups and scaleups. I also co-founded a startup and participated in Entrepreneurs First. Now looking for my next challenge, feel free to reach out!