DeFi Platform Architect / Lead Engineer

ARYAN SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

A global technology firm is seeking a Senior Architect to lead the design and implementation of decentralized finance platforms. The role involves hands-on work in building production-grade systems, with a focus on smart contracts, transaction flows, and backend services. Candidates should have strong experience in Solidity, DeFi principles, and backend engineering. The position offers a competitive compensation package and the opportunity to work on complex financial technology challenges.

Benefits

Competitive compensation

High technical autonomy

Architectural ownership

Qualifications

• Strong hands-on experience with Solidity and EVM-based chains.
• Deep understanding of DeFi primitives, including AMMs, lending protocols, and liquidity pools.
• Experience with smart contract security, audits, and common attack vectors.

Responsibilities

• Architect and implement DeFi platforms including smart contracts and on-chain/off-chain integrations.
• Design end-to-end transaction flows across wallets, protocols, bridges, and settlement layers.
• Define infrastructure for indexing, event processing, and analytics.

Skills

Solidity

EVM-based chains

Smart contract security

Backend engineering (Go, Rust, Java, TypeScript)

Cryptography fundamentals

Job description

A global, enterprise-scale organization is building a regulated DeFi-enabled platform and is hiring a highly technical Architect to design and lead the core decentralized finance technology stack. This role is hands-on, deeply technical, and focused on production-grade DeFi systems rather than research or experimentation.

Role scope

• Architect and implement DeFi platforms including smart contracts, on-chain/off-chain integrations, and liquidity mechanisms
• Design end-to-end transaction flows across wallets, protocols, bridges, oracles, and settlement layers
• Own smart contract architecture, upgrade patterns, security models, and gas optimization strategies
• Build scalable backend services that interact with blockchains in real time
• Define infrastructure for indexing, event processing, and analytics
• Lead technical standards, reviews, and architectural decisions

Core technical requirements

• Strong hands-on experience with Solidity and EVM-based chains
• Deep understanding of DeFi primitives: AMMs, lending protocols, staking, governance, and liquidity pools
• Experience with smart contract security, audits, and common attack vectors
• Strong backend engineering skills in languages such as Go, Rust, Java, or TypeScript
• Experience with blockchain nodes, RPC providers, indexers, and event listeners
• Solid knowledge of cryptography fundamentals and key management
• Production experience with cloud-native infrastructure and CI/CD

Nice to have

• Experience with non-EVM chains or Layer-2 solutions
• Knowledge of cross-chain messaging and bridge architectures
• Exposure to regulated DeFi or institutional-grade digital asset platforms

Why this role

• Build real, production DeFi infrastructure at scale
• High technical autonomy and architectural ownership
• Work on complex problems at the intersection of finance, cryptography, and distributed systems
• Competitive compensation with strong long-term upside

Client identity is confidential to protect the search. Full details will be shared during the interview process.

This is a senior, hands-on role suited for architects who still build.