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Tonis Tiganik

Available to hire

I'm Tonis Tiganik, a Backend Engineer focused on crypto data services and DeFi tooling.

About

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.

  • 15 years' experience
  • Joined December 2025

Languages

  • EnglishFluent
  • EstonianFluent

Industry experience

  • Software & Internet
  • Financial Services
  • Media & Entertainment
  • Professional Services

Work experience· 4 roles

Lead Backend Engineer · HolderScanJan 2025 – Present · 1 yr 11 mos

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 · High-MobilityAug 2014 – Dec 2024 · 10 yrs 5 mos

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 · CannedappsAug 2011 – Aug 2014 · 3 yrs 1 mo

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

Intern · Yrgel EntertainmentJan 2011 – May 2011 · 5 mos

Education

Bachelor’s in IT Systems Development · Estonian IT College2007 – 2011

Certifications and awards

Solidity security audits (Sherlock, Code4rena)2030 – 2025

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