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Lead Full‑Stack Engineer focused on decentralized web applications (dApps), with 10+ years building and scaling Node.js/TypeScript systems in production. Recently led the launch of Tanssi, Moonbeam, and DataHaven dApps, owning architecture and hands‑on implementation across frontend, backend, AWS infrastructure, and testing.…

Elmar Kenigs

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

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Lead Full‑Stack Engineer focused on decentralized web applications (dApps), with 10+ years building and scaling Node.js/TypeScript systems in production. Recently led the launch of Tanssi, Moonbeam, and DataHaven dApps, owning architecture and hands‑on implementation across frontend, backend, AWS infrastructure, and testing.…

Available to hire

Lead Full‑Stack Engineer focused on decentralized web applications (dApps), with 10+ years building and scaling Node.js/TypeScript systems in production. Recently led the launch of Tanssi, Moonbeam, and DataHaven dApps, owning architecture and hands‑on implementation across frontend, backend, AWS infrastructure, and testing.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

German

Advanced

Russian

Intermediate

Latvian

Intermediate

Work Experience

Lead Software Engineer at OpsLayer, Inc.

January 1, 2025 - Present

Led a team of 7 engineers across Tanssi, Data Haven, and Glacis Apps; managed hiring and onboarding; defined frontend/backend architecture and end-to-end integrations with Main Storage Provider backends and Data Haven chain; oversaw end-to-end Tan ss i App delivery; migrated frontend from Create React App to Next.js with AWS Amplify; introduced Playwright-based E2E testing across projects and established core Web3 patterns (Ethers.js → WAGMI/PolkadotJS) and testing standards.

Full Stack Node.js Software Engineer (Contractor) at e-farm GmbH

June 1, 2021 - January 1, 2022

Developed SmartTrade React Native app for machinery dealers; built Nest.js backend services + MongoDB models; connected React/React Native frontend to backend via shared schemas; created data aggregation to auto-generate PDFs for the sales team; integrated microservices with 3rd-party APIs.

Backend Node.js Software Engineer (Contractor) at e-farm GmbH

March 1, 2020 - January 1, 2021

Built multiple Node.js microservices using Nest.js and RabbitMQ in an event-driven architecture to support machinery marketplaces; developed data aggregation service to generate PDFs from internal systems for the sales team; created a microservice to push machinery listings to partner websites via 3rd-party APIs.

Backend Node.js Software Engineer (Contractor) at Local Portal / Exposite Group

June 2, 2020 - December 2, 2020

Improved frontend business logic and state management for a public news/community portal; migrated to microservices; enhanced authentication layer with TypeScript and Cypress tests for better security; built backend services and connected frontend to shared schemas.

Lead Software Engineer at Local Portal Group / Exposite Group

June 2, 2019 - December 2, 2020

Led backend microservices for a large-scale logistics platform; designed and implemented end-to-end architecture; on-boarded and coordinated a team of engineers; delivered full-stack features across web and mobile platforms.