Role summary

We are hiring a Blockchain / Protocol Engineer to help design and build the protocol and chain-related layer behind future TTXTech capabilities. The role covers Rust-based engineering, smart contracts, on-chain/off-chain architecture, and the integration of verified results from SDEVI and digital MRV workflows. We are looking for a serious engineer, not for someone focused on hype topics.

What you will work on

• Rust-based protocol or chain-related components for future TTC and TTX infrastructure
• Smart contract logic where a transitional or supporting chain setup is needed
• On-chain/off-chain boundaries for verified results and evidence-linked workflows
• Interfaces between product systems, SDEVI processes, and protocol-related services
• Security, auditability, and maintainability of protocol-facing components

Responibilities

• Help define which results belong on-chain and which data should remain off-chain.
• Build Rust-based protocol or chain components that support trusted state transitions and verifiable outputs.
• Develop and review smart contract logic where transitional Polygon-based components are required.
• Connect protocol-related services with backend systems and evidence workflows from SDEVI and digital MRV processes.
• Contribute to architecture decisions on data flow, security boundaries, and long-term maintainability.
• Document design choices clearly enough that product, backend, and leadership can make informed decisions.
• Work directly with C-level management, product, backend, and external partners on technical direction.

What you should bring

• Strong software engineering experience in Rust or another systems language with the ability to work productively in Rust.
• Experience with blockchain, protocol, or distributed-systems engineering beyond simple wallet integrations.
• Practical experience with smart contracts and the trade-offs between on-chain and off-chain design.
• Ability to think about security, verification, state transitions, and long-term maintainability.
• Comfort working in an early build-up phase where some architectural decisions are still being shaped.
• Clear communication and disciplined technical documentation.

Helpful but not required

• Experience with Polygon or EVM-compatible environments.
• Experience with cryptographic primitives, proofs, or verifiable data structures.
• Experience integrating protocol components with backend services and business workflows.
• Experience in infrastructure-near or chain-near environments rather than purely front-end Web3 work.

What success looks like in the first 6 months

• Help define a credible on-chain/off-chain model for at least one real workflow connected to SDEVI or digital MRV.
• Deliver at least one technical building block in Rust, a smart contract, or a protocol-facing integration path.
• Document core architecture choices around trust boundaries, state, and evidence anchoring.
• Create a clearer path from transitional Polygon-based work toward the intended long-term direction.

Team and work setup

You report to C-level management and work closely with product, backend, and external partners. The team is small enough that this role can shape direction early, but concrete enough that implementation matters immediately.

What this role is not

• This is not a token-marketing or community-growth role.
• This is not an NFT, meme-coin, or wallet-only integration role.
• This is not a speculative architecture role with no implementation ownership.

Candidate note

Candidates should know that we are not hiring for generic Web3 branding. We are hiring for careful technical work around verifiable outcomes, protocol logic, and engineering decisions that can survive real product use.

We look forward to receiving your detailed application materials (cover letter and resume). Please email them to application[at]ttxtech.eu , indicating your earliest possible start date.