Staff Software Engineer - Java
First seen by Alion on Sep 25, 2026.
Position :
Staff Engineer - Java
About the Role :
The Staff Engineer will be a senior individual contributor and technical leader within the digital asset engineering team. You will architect, build, and scale the core services underpinning our blockchain and DeFi products - smart contracts, wallet and custody infrastructure, on-chain/off-chain integration layers, and the backend platforms that connect Web3 capabilities to a regulated banking core. You will set the technical bar, drive engineering standards, and mentor engineers across the team while remaining deeply hands-on.
Key Responsibilities :
- Design and build production-grade smart contracts and protocol integrations (EVM/Solidity; other chains as required), from architecture through deployment and upgrade management.
- Architect wallet, custody, and transaction-orchestration services - key management integration (MPC/HSM/multisig), signing flows, nonce and gas management, and chain indexing.
- Build robust backend services and APIs (microservices, event-driven architecture) that bridge on-chain activity with the bank's core platforms, ledgers, and compliance systems.
- Own technical decisions end-to-end : system design, trade-off analysis, technology selection, and architecture reviews for the digital asset stack.
- Integrate with DeFi protocols, liquidity venues, oracles, and bridges safely - including failure handling, reconciliation, and monitoring of on-chain positions.
- Drive engineering excellence : coding standards, automated testing (including contract testing and fuzzing), CI/CD, observability, and infrastructure-as-code.
- Partner closely with Security (including the Security Architect - DeFi), Risk, and Compliance to ship products that meet the bar of a regulated bank.
- Lead incident response for production issues in the digital asset stack, driving root-cause analysis and long-term fixes.
- Mentor and uplift senior and mid-level engineers; influence the technical roadmap across squads without direct people-management responsibility.
- Stay ahead of the Web3 ecosystem - evaluating new chains, standards (e.g., ERC-4337, token standards), and tooling for adoption.
Required Experience & Skills :
- 10+ years of software engineering experience, with 3+ years building blockchain, Web3, or DeFi systems in production.
- Deep hands-on experience with smart contract development (Solidity/EVM essential; Rust, Move, or Cairo a plus) and modern tooling (Foundry, Hardhat).
- Strong backend engineering skills in Java with proven experience designing distributed systems at scale.
- Experience with wallet infrastructure, key management (MPC/HSM), transaction signing, and chain indexing/data pipelines.
- Solid understanding of DeFi primitives - AMMs, lending, staking, stablecoins, bridges, oracles - and how to integrate them safely.
- Cloud-native engineering experience (AWS or Azure), Kubernetes, event streaming (Kafka or similar), and CI/CD at scale.
- Strong security mindset : secure coding, contract audit readiness, and threat-aware design.
- Track record of operating at Staff level - setting technical direction, leading through influence, and delivering complex systems across multiple teams.
- Excellent communication skills; able to explain deep technical choices to product, risk, and executive stakeholders.
Preferred Qualifications :
- Experience in a crypto exchange, digital-asset custodian, Web3 protocol team, or blockchain-focused startup/accelerator environment.
- Contributions to open-source Web3 projects, protocol design, or published technical work (audits, EIPs, research).
- Prior experience in fintech or regulated financial services.
- Familiarity with account abstraction, L2s/rollups, and cross-chain messaging.
What We Offer :
- The opportunity to build a regulated bank's digital asset platform from the ground up, with real production scale.
- A high-ownership, fast-moving environment with direct exposure to senior leadership.
- Competitive compensation and benefits aligned to the Gurgaon market.
Candidates should be from Product Based companies only.
Skills
Java, Blockchain, Solidity, Distributed Systems, Kafka, DeFi Protocols, Blockchain Implementation, Smart Contract, Microservices Architecture