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I'm Tonis Tiganik, a Backend Engineer focused on crypto data services and DeFi tooling. I build scalable data pipelines and analytics infrastructure using TypeScript, Kafka, and PostgreSQL, currently shaping blockchain analytics at HolderScan. Previously I conducted Solidity security audits and contributed to Ethereum tooling, and I enjoy turning complex blockchain data into reliable services for business customers and open source communities.…I'm Tonis Tiganik, a Backend Engineer focused on crypto data services and DeFi tooling. I build scalable data pipelines and analytics infrastructure using TypeScript, Kafka, and PostgreSQL, currently shaping blockchain analytics at HolderScan. Previously I conducted Solidity security audits and contributed to Ethereum tooling, and I enjoy turning complex blockchain data into reliable services for business customers and open source communities.

Tonis Tiganik

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

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I'm Tonis Tiganik, a Backend Engineer focused on crypto data services and DeFi tooling. I build scalable data pipelines and analytics infrastructure using TypeScript, Kafka, and PostgreSQL, currently shaping blockchain analytics at HolderScan. Previously I conducted Solidity security audits and contributed to Ethereum tooling, and I enjoy turning complex blockchain data into reliable services for business customers and open source communities.…I'm Tonis Tiganik, a Backend Engineer focused on crypto data services and DeFi tooling. I build scalable data pipelines and analytics infrastructure using TypeScript, Kafka, and PostgreSQL, currently shaping blockchain analytics at HolderScan. Previously I conducted Solidity security audits and contributed to Ethereum tooling, and I enjoy turning complex blockchain data into reliable services for business customers and open source communities.

Available to hire

I’m Tonis Tiganik, a Backend Engineer focused on crypto data services and DeFi tooling. I build scalable data pipelines and analytics infrastructure using TypeScript, Kafka, and PostgreSQL, currently shaping blockchain analytics at HolderScan.

Previously I conducted Solidity security audits and contributed to Ethereum tooling, and I enjoy turning complex blockchain data into reliable services for business customers and open source communities.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Estonian

Fluent

Work Experience

Lead Backend Engineer at HolderScan

January 1, 2025 - Present

Blockchain Data Services: Built TypeScript services scraping EVM/Solana token transfers; indexed data into PostgreSQL for analytics (PnL, holder metrics); API endpoints for business customers at ~100 RPS with Redis caching; set up on-site Ethereum nodes and 1TB+ PostgreSQL databases. Streaming Infrastructure: Deployed in-house Kafka cluster processing blockchain data at 600 msg/s; Telegram alerts for price/balance changes; RabbitMQ-based job scheduling processing 30,000 tokens every 10 minutes.

Backend Engineer at High-Mobility

August 1, 2014 - December 1, 2024

Built data streaming pipelines with Kotlin consuming from Kinesis and forwarding to Kafka; processed vehicle telemetry from thousands of Ford and PSA cars at 580 msg/s; developed backend services with Ktor for vehicle data management with OAuth authentication; deployed with Kubernetes, Helm, and Terraform with Grafana monitoring.

iOS Software Engineer at Cannedapps

August 1, 2011 - August 1, 2014

Developed telematics apps for Jaguar Land Rover with REST APIs and local storage.

Intern at Yrgel Entertainment

January 1, 2011 - May 1, 2011

Supported development during internship.