Blockchain Jobs in Europe

About TAC TAC is a Layer 1 blockchain with a native adapter for TON, enabling Ethereum-based applications to access Telegram’s user base of over 1 billion people.

Our mission is to scale the TON developer ecosystem by onboarding Solidity/EVM engineers and helping launch hundreds of new dApps for TON users—especially in consumer-facing use cases via Telegram MiniApps.

We’re in a fast growth phase: post-fundraising, with a strong team of crypto natives and former corporate leaders. We're now building a new independent chain based on the Cosmos SDK.

The Role

We’re looking for an experienced Cosmos SDK Developer to help us design and build a new standalone blockchain network based on the modular Cosmos architecture.

Our goal is to develop a liquid staking network with IBC support and cross-chain interoperability.

Responsibilities

• Develop and maintain Cosmos SDK modules in Go

• Configure and launch a full blockchain application (genesis, nodes, consensus)

• Implement cross-chain functionality via IBC and Interchain Accounts

• Build systems for rewards, delegation, and custom distribution logic

• Integrate with external services (relayers, monitoring, governance tooling)

• Maintain CI/CD pipelines and test infrastructure for the node

• Contribute to architecture discussions and perform code reviews

Requirements

• Strong proficiency in Go

• Experience developing and modifying Cosmos SDK modules

• Solid understanding of Cosmos SDK architecture (app.go, keepers, multistore, messages), Tendermint (CometBFT), and IBC

• Hands-on experience launching and configuring custom networks (ideally with IBC)

• Familiarity with Interchain Accounts

• Understanding of the Cosmos ecosystem and DeFi concepts

• Experience deploying and testing smart contracts (a plus)

What We Offer

• Competitive and fair compensation, aligned with your experience and responsibilities

• Influence the architecture of a new blockchain from the ground up

• Access to key growth opportunities within the TON ecosystem

• Flexible schedule (CET-friendly hours preferred)

Why Now

TAC is preparing for Mainnet launch. We’ve already passed $200M+ in TVL, established major partnerships, and secured infrastructure integrations. With strong support from TON’s core ecosystem players, now is the perfect time to join and leave your mark on a new chain’s evolution.

https://x.com/tacbuild