Cosmos SDK Developer Lisboa

Cosmos SDK Developer
Lisboa
Lisboa, Lisboa, Portugal

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 d
Apps for TON users—especially in
- facing use cases via Telegram Mini
Apps.

We’re in a fast growth phase:
- 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
- chain interoperability.

Responsibilities

• Develop and maintain Cosmos SDK modules in Go
• Configure and launch a full blockchain application (genesis, nodes, consensus)
• Implement
  - 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 (Comet
  BFT), and IBC
• Hands-on experience launching and configuring custom networks (ideally with IBC)
• Familiarity with Interchain Accounts
• Understanding of the Cosmos ecosystem and De
  Fi 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