Blockchain Backend Developer

We are looking for a Blockchain Backend Developer to join our  team at Inktech.

Responsibilities:

- Deposits: development and maintenance of block indexers (EVM, BTC-like, Tron, TON, Solana), log and UTXO processing, detection of incoming transactions and confirmations, handling reorg scenarios, ensuring idempotency and correct event delivery to Payments/Wallet systems;

- Withdrawals: preparation, signing, and broadcasting of transactions (EVM/BTC-like/Tron/TON), lifecycle management of transaction statuses, implementation of limits logic, safe balance checks, automatic token sweeping, retries, and atomic status persistence in the database;

- Node interaction: integration with RPC/REST/gRPC, query optimization, node health monitoring, network error handling, and support for multiple client versions through a unified abstraction layer.

Requirements:

• - 3+ years of backend development experience and 2+ years in crypto/blockchain projects with production-level workloads;

• - Strong experience building services in Go;

• - Deep understanding of Ethereum, TRON, BNB, BTC-like chains, TON, and their RPC/API mechanisms;

• - Web3: experience working with web3.js, ethers.js, or similar libraries for network interaction and transaction signing;

• - Experience integrating with nodes via RPC/REST/gRPC, including error handling and managing multiple clients;

• - Hands-on experience designing and maintaining block indexers and transaction-processing services;

• - Strong SQL skills, including query optimization, schema design, and zero-downtime migrations;

We offer:

• High salary (plus performance bonuses and salary revision on regular basis);

• Work schedule: Mon-Fri (9h with 1h lunch break), flexible start 8:00-10:00;

• 24-days holiday leave;

• First line sea view from your office;

• Corpora English lessons;

• GYM and SPA in the office;

• Corporate meals;

• Eventful corporate life;

• Exciting work challenges that allow you to grow to your full potential;

• Strong team of like minded professionals who will be by your side to accomplish ambitious projects, and to stimulate your professional development and bring experience.