Graduate Hiring - Software Systems Design Engineer — Blockchain Security & Protocol

Matrixport; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

Matrixport in Singapore is looking for a Software Systems Design Engineer focused on blockchain security. This role involves protocol analysis, system security hardening, and research in cutting-edge blockchain attack techniques.

The ideal candidate should hold a Master's degree in Computer Science or similar and have strong technical skills in programming languages like Java, Go, Rust, or C++. This position is suitable for new graduates or candidates with up to 2 years of experience.

Qualifications

• Master's degree or above preferred.
• New graduate or up to 2 years of work experience.

Responsibilities

• Analyze and evaluate mainstream blockchain protocols.
• Develop hardening and mitigation plans for wallet systems.
• Drive security-driven re-architecture of existing systems.
• Conduct security audits of internal systems.

Skills

Java

Go

Rust

C++

Cryptography

Distributed systems design

Penetration testing

Education

Master's degree in Computer Science, Cryptography, or Network/Cyber Security

Job description

About the Role

We're hiring a new‑graduate Software Systems Design Engineer focused on blockchain security and protocol design. You'll work at the intersection of cryptography, distributed systems, and adversarial security — redesigning and hardening wallet and core systems against protocol‑ and architecture‑level threats. This is a builder’s role for someone who thinks like an attacker and designs like an engineer.

What You’ll Do

Protocol Analysis & Design

• Analyze and evaluate how mainstream blockchain protocols work under the hood (Ethereum/EVM, Cosmos SDK, Substrate, Solana, etc.), and redesign wallet systems grounded in secure cryptographic mechanisms.
• Develop hardening and mitigation plans for the wallet system against known protocol‑level vulnerabilities and emerging risks.

System Security Re‑architecture & Hardening

• Drive security‑requirement‑driven re‑architecture and maintenance of existing software systems.
• Embed security assumptions at the architecture level, designing and implementing defense‑in‑depth for critical modules to reduce single points of failure and ambiguous trust boundaries.

Research, Audit & Response

• Track cutting‑edge blockchain attack techniques and defenses, and turn research into shippable system improvements.
• Participate in or lead security audits of internal systems and open‑source dependencies, driving remediation and architectural improvements.

Background & Experience

• Master's degree or above preferred in Computer Science, Cryptography, or Network/Cyber Security.
• New graduate or up to 2 years of work experience.

Core Technical Skills

• Development & architecture: Strong command of at least one systems‑programming language among Java / Go / Rust / C++. Proficient in distributed systems design, concurrency models, and performance optimization.
• Security domain knowledge: Familiar with threat modeling, secure coding standards, penetration‑testing mindset, and supply‑chain security.

Key Soft Skills

• Security mindset & risk thinking: Operates on a "zero trust" principle by default and reasons systematically about attack surfaces.
• Analysis & abstraction: Translates complex, ambiguous security requirements into clear, verifiable technical architecture and module designs.
• Engineering craft & influence: Builds a security culture across the team through design docs, code reviews, and tech talks.

Preferred Qualifications

• Deep understanding of the full technical stack of at least one mainstream blockchain (networking, consensus, execution, storage). Strong grasp of smart contract security and common vulnerability patterns.
• Practical command of how public‑key cryptography, hash functions, zero‑knowledge proofs, and threshold signatures apply — and where their risks lie — in real systems.

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