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Surafel Getachew

@surafelgetachew1

Senior Full Stack Developer at OpenTeams building AI chat streaming and conversation branching for an open-source platform.

Ethiopia

Message

At OpenTeams, I built real-time AI chat streaming with LangChain and LangGraph, and designed conversation branching so users can navigate and regenerate responses. I also co-architected an open-source project management platform and developed its authentication system and REST APIs.

At Imito AG, I customized checkout and re-engineered PDF generation for medical professionals. Earlier, I led the MedhanET frontend redesign at Fidel Labs and developed platforms and real-time consultation features using React, Node.js, and cloud infrastructure.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Developer

Current

OpenTeams

May 2023 - Present (3 years 5 months)

Built real-time AI chat streaming using LangChain's LangGraph ReAct agent pattern and designed a message branching system, reducing user-reported friction by ~30%. Co-architected an open-source project management platform and engineered secure authentication with RBAC using Supabase.

Next.js React TypeScript Tailwind Supabase PostgreSQL Lang Chain LangGraph Jest Git GitHub

Front-End Developer

Imito AG

Feb 2022 - May 2023 (1 year 3 months)

Customized payment checkout flow to securely pass user data, saving an estimated $12K/year in licensing fees and improving backend event tracking reliability from ~78% to 99%. Re-engineered PDF generation by migrating from Mustache to Puppeteer/Chromium and modernized the codebase with React Hooks and TypeScript.

TypeScript JavaScript React Material UI CSS Jest React Testing Library Puppeteer Chromium Storybook Jira Bitbucket Confluence Git

Lead Front-End Developer

Fidel Labs

Feb 2021 - Apr 2022 (1 year 2 months)

Led a small frontend team in redesigning and rebuilding the MedhanET e-prescription platform, introducing Next.js SSR and SSG patterns to improve performance and increasing Lighthouse scores from 62 to 91. Established a comprehensive testing strategy with Jest and Cypress and implemented an automated CI/CD pipeline with GitHub Actions.

JavaScript TypeScript React Next.js Material UI Ant Design Jest Cypress React Testing Library Storybook NodeJS Express PostgreSQL TypeORM Docker Terraform GitHub Actions Git

Full Stack Developer

Fidel Labs

Aug 2021 - Jan 2022 (5 months)

Developed and launched a full-stack talent development platform for Arizona State University, serving hundreds of students and staff. Built reusable React components, state management, and data layer, and contributed to RESTful API development using Node.js and Express.

JavaScript TypeScript React Next.js Material UI Ant Design Jest Cypress React Testing Library Storybook NodeJS Express PostgreSQL TypeORM Docker Terraform GitHub Actions Git

Full Stack Developer

Virtual Psychiatrist

Feb 2019 - Jan 2021 (1 year 11 months)

Implemented a lightweight peer-to-peer video calling feature using WebRTC (PeerJS), React, Node.js, and Socket.IO, enabling real-time consultations for patient–psychiatrist pairs. Designed and developed RESTful APIs with Node.js/Express and a MongoDB data layer.