Koinly Tech Stack

Crypto tax reporting platform connecting 900+ exchanges and blockchains

Accounting London, London 11–50 employees Founded 2019 Privately Held

Koinly automates tax reporting for cryptocurrency investors by pulling transaction data from major exchanges (Coinbase, Binance, Bittrex, CEX.io) and blockchain addresses, then generating tax-compliant reports for 100+ countries. The engineering roadmap is dominated by scaling challenges—Ruby backend services handling billions of records, transaction throughput, and data sync reliability—while the hiring mix (6 engineers, 4 marketing, 4 product; mostly senior/lead roles) suggests they're scaling ops and content alongside infrastructure.

Tech Stack 13 technologies

Core StackRuby Ruby on Rails Google Analytics PostgreSQL Jira SQL Ahrefs SEMrush YouTube X Google Analytics 4 Uniswap Excel

What Koinly Is Building

◆Challenges

Scaling backend systems
Performance and reliability at scale
Maintaining authority accuracy
Maintaining 900+ crypto integrations
Ensuring api reliability
Supporting customers with integration issues
Maintaining performance for billions of transactions
Data flow complexity
Scaling backend services for billions of records
Performance tuning of ingestion pipelines

▲Active Projects

Scalable backend systems for billions of transactions
Scaling ruby backend services for billions of records
Seo content roadmap
Add support for new data formats
Maintain crypto data sync systems
Modernizing core ruby systems
Content strategy across seo, social, and thought leadership
Develop new integrations
Social channel strategy for reddit, x, and youtube
High-throughput ruby services for billions of rows

Hiring Activity

Accelerating15 roles · 7 in 30d

Department

Engineering

Marketing

Product

Seniority

Senior

Lead

Staff

Mid

Notable leadership hires: Product Lead, Content Lead

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About Koinly

Koinly is a tax and portfolio tracking solution for cryptocurrency investors and accountants in the United Kingdom. The product integrates with 900+ crypto exchanges and blockchains to automatically calculate capital gains and generate tax reports in formats accepted by tax agencies (or importable into TurboTax, TaxACT, Xero). Customers span 100+ countries including the USA, UK, Canada, Australia, and Scandinavian markets. The company operates a lean engineering-first organization with active hiring across the UK, Central Europe, and the US.

HeadquartersLondon, London

Company Size11–50 employees

Founded2019

Hiring MarketsUnited Kingdom, Czechia, Poland, Portugal, United States

Frequently Asked Questions

What exchanges does Koinly support?

Koinly integrates with 900+ crypto exchanges and blockchains, including Coinbase, Binance, Bittrex, and CEX.io. The platform also supports public blockchain address imports.

What countries does Koinly support for tax filing?

Koinly supports 100+ countries including the USA, UK, Canada, Australia, Sweden, Norway, and Ireland. Reports are formatted to match tax agency requirements in each jurisdiction.

What is Koinly's tech stack?

Koinly's backend is built on Ruby on Rails with PostgreSQL, SQL, and integrations with Uniswap for blockchain data. Marketing and analytics rely on Google Analytics, Ahrefs, and SEMrush.