JOB SUMMARY

• Mission: Own the distributed backend data engine end-to-end, guaranteeing precision, performance, and scale for complex crypto tax data.

• Location: Remote – Strictly Europe (EU / UK timezones)

  • Note, we won’t review job applications from outside Europe.

• Employment: B2B Contract.

• Compensation: USD $80k – $100k/y.

• Perks: 32 days PTO (incl. public holidays).

• Experience: 8+ years with a focus on complex, data-heavy distributed systems.

🚀 Work within one of the most rapidly growing industries in the world

We’re looking for someone who thrives on complex, business-critical financial systems – architectural depth, high throughput, high-volume ETL, and high stakes. You’ll focus on optimising, refactoring, and elevating our backend architecture while ensuring deterministic execution, high availability, and financial-grade correctness.

Above all, we value a high sense of product ownership, exceptional code quality, autonomy, and openness: you take responsibility for outcomes, not just tasks, and you work independently while staying transparent and collaborative.

We also expect:

• Deep understanding of distributed system architecture and the design patterns that support it at scale – queues, workers, idempotency, backpressure, rate-limiting, and retries.

• Work closely with product and engineering leads, serving as a key technical partner to evaluate ideas, propose architectural solutions, and take real ownership of our backend data pipeline.

• Real, production-level DeFi experience

  • AMMs, lending, staking, LP positions, and bridges. You understand what on-chain activity actually means, and you can spot data anomalies instantly.

• Advanced data modeling and SQL skills, with a track record of tuning performance on massive PostgreSQL datasets.

• Proven professional experience with Rust

  • you’ve used it in production or professional settings, can read and write it confidently, and are ready to work in it where extreme performance demands it.

• Fluency with the latest AI development tools such as Claude/Codex/Cursor, and the judgment to put new tools to work effectively in a professional workflow.

You should have deep, production-level experience across our core stack:

Core

• TypeScript (strict, modern) on the Bun runtime, with modern TS tooling (oxlint, Biome)

• Distributed processing with RabbitMQ and Redis (ioredis)

• PostgreSQL

  • schema design, query optimization, and migrations at scale

• Vitest for unit and integration testing

• Sentry for error monitoring

Data & Blockchain

• Blockchain libraries and node/indexer APIs; RPC and provider reliability patterns

• On-chain data decoding: ABIs, event logs, traces, token standards, transaction semantics

• Data parsing and wrangling: csv-parse, xlsx (SheetJS), node-html-parser

• Integrations against messy, inconsistent third-party APIs and file formats

Infrastructure & Tooling

• PostgreSQL, Heroku, GitHub, JIRA

• Public portfolio of projects available on GitHub or similar platforms.

• Deeper Rust experience, especially in performance-critical data processing.

• Background in financial products, double-entry accounting, or tax domains.

• Familiarity with Ruby (our services interoperate with a Ruby codebase).

• Knows and understands our product.

Are you interested in this position?

Apply by clicking on the “Apply Now” Button below!

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