Cosmos SDK Developer

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)

While the job posting shows Lisbon as a location for technical reasons, we welcome applications from qualified candidates regardless of their geographic location.

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.

Seniority level

- Mid-Senior level

Employment type

- Full-time

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