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I’m Atsuhiro Endo, a senior software engineer based in Berlin with a passion for Web3 and building scalable web applications. I have extensive experience in full-stack development, backend (Golang, Node.js), frontend (React, Vue), and mobile (React Native), with a strong emphasis on test-driven development and modular architectures. I enjoy mentoring peers and sharing knowledge to deliver robust, maintainable software. I’ve worked across fintech, insurtech, digital identity, and travel sectors, including co-founding a crowdfunding platform focused on French SME bonds. I am excited about leveraging Web3 technologies to empower Web2 businesses to transition into decentralized solutions, particularly through blockchain, smart contracts, and scalable cloud-native architectures.…I’m Atsuhiro Endo, a senior software engineer based in Berlin with a passion for Web3 and building scalable web applications. I have extensive experience in full-stack development, backend (Golang, Node.js), frontend (React, Vue), and mobile (React Native), with a strong emphasis on test-driven development and modular architectures. I enjoy mentoring peers and sharing knowledge to deliver robust, maintainable software. I’ve worked across fintech, insurtech, digital identity, and travel sectors, including co-founding a crowdfunding platform focused on French SME bonds. I am excited about leveraging Web3 technologies to empower Web2 businesses to transition into decentralized solutions, particularly through blockchain, smart contracts, and scalable cloud-native architectures.

Atsuhiro Endo

Full Stack Developer, Web Developer, Back-End Developer, +2

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I’m Atsuhiro Endo, a senior software engineer based in Berlin with a passion for Web3 and building scalable web applications. I have extensive experience in full-stack development, backend (Golang, Node.js), frontend (React, Vue), and mobile (React Native), with a strong emphasis on test-driven development and modular architectures. I enjoy mentoring peers and sharing knowledge to deliver robust, maintainable software. I’ve worked across fintech, insurtech, digital identity, and travel sectors, including co-founding a crowdfunding platform focused on French SME bonds. I am excited about leveraging Web3 technologies to empower Web2 businesses to transition into decentralized solutions, particularly through blockchain, smart contracts, and scalable cloud-native architectures.…I’m Atsuhiro Endo, a senior software engineer based in Berlin with a passion for Web3 and building scalable web applications. I have extensive experience in full-stack development, backend (Golang, Node.js), frontend (React, Vue), and mobile (React Native), with a strong emphasis on test-driven development and modular architectures. I enjoy mentoring peers and sharing knowledge to deliver robust, maintainable software. I’ve worked across fintech, insurtech, digital identity, and travel sectors, including co-founding a crowdfunding platform focused on French SME bonds. I am excited about leveraging Web3 technologies to empower Web2 businesses to transition into decentralized solutions, particularly through blockchain, smart contracts, and scalable cloud-native architectures.

Available to hire

I’m Atsuhiro Endo, a senior software engineer based in Berlin with a passion for Web3 and building scalable web applications. I have extensive experience in full-stack development, backend (Golang, Node.js), frontend (React, Vue), and mobile (React Native), with a strong emphasis on test-driven development and modular architectures. I enjoy mentoring peers and sharing knowledge to deliver robust, maintainable software.

I’ve worked across fintech, insurtech, digital identity, and travel sectors, including co-founding a crowdfunding platform focused on French SME bonds. I am excited about leveraging Web3 technologies to empower Web2 businesses to transition into decentralized solutions, particularly through blockchain, smart contracts, and scalable cloud-native architectures.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

French

Fluent

German

Intermediate

Japanese

Fluent

Italian

Intermediate

English

Fluent

Work Experience

Senior Full Stack Engineer at Affinidi GmbH

July 1, 2021 - Present

Built multiple back-end APIs using the ports and adapters software architecture (hexagonal) and OpenAPI specifications; refactored legacy code with unit and integration tests; introduced Test-Driven Development for new features; contributed to open-source SDKs in TypeScript, Java, Dart, PHP, and Python; architected a Data Analytics pipeline on AWS CDK, including event collection, Kinesis Data Streams, Firehose, S3, Glue ETL, and Athena; developed an open-source CLI to consume Affinidi services; promoted automated testing across teams and mentored interns; built a rules-engine API using OpenAPI in Go and gRPC; created a web UI using a micro-frontend architecture.

Freelance Full-Stack Software Engineer at Infobox

October 1, 2023 - September 1, 2024

Added Storybook components from Figma designs; designed database schema and Prisma models; improved UI/UX based on customer feedback; created queries for data collection; implemented CSV data uploads; built a multi-condition filter form and related queries; integrated Google Analytics 4; Technologies: Next.js, Remix, Vercel, Planetscale, TypeScript, Prisma.

Front-End Engineer at RealToken (RealT)

March 1, 2021 - June 1, 2021

Improved daily/weekly rent token payment calculations; collected data from side chains such as Polygon (Matic); Technologies: Next.js, React, TypeScript, Jest, web3.js, MetaMask; deployment on Heroku.

Full-Stack Software Engineer at Actineo (Verisk Germany)

October 1, 2017 - February 1, 2021

Cockpit is a digital instrument for active claims management. Implemented paginated claims listing with search; RBAC authentication; detailed claim view and CRUD; multi-parameter insurance expense calculator; Tech stack includes Node.js/TypeScript, React, MongoDB, PostgreSQL, GraphQL; Docker; Jest & React Testing Library (TDD); CI/CD with GitLab; analytics and dashboards.

Full Stack Web Developer at Investbook SAS

December 1, 2015 - September 1, 2017

Led IT team; added a Go API deployed as a Netlify Lambda; Registration and Authentication; Investor and Fundraiser UIs; CSS/responsive design; SEO-friendly semantics; implemented a SME bond eligibility test integrating 3rd party data providers; built an investor journey with KYC via Lemonway; created SMEs public interface and a complete Admin backend.

Full Stack Web Developer at TSA Paris

March 1, 2012 - November 1, 2015

Developed a multi-management web app; managed orders from travel clients; planned Guides-Assistants resources; built Guides-Assistant interface in Vue.js; managed cash-flow; integrated analytics tools to visualize company performance.

C++ Developer at Capital Fund Management

January 1, 2009 - January 1, 2012

C++ development for an in-house high-frequency trading platform; Python tooling for latency analysis; PHP/JavaScript-based UI for data visualization; production support during Asian/Australian market hours.