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

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

Job summary

BIT Official in Singapore is seeking a new graduate Software Systems Design Engineer with a focus on blockchain security. In this role, you will analyze blockchain protocols, develop security hardening plans, and participate in security audits.

The ideal candidate will have a Master’s degree in a relevant field and a strong command of programming languages such as Java, Go, Rust, or C++. Join us to help strengthen our systems against emerging threats.

Qualifications

• New graduate or up to 2 years of work experience.
• Strong command of at least one systems-programming language.
• Familiar with supply-chain security.

Responsibilities

• Analyze and evaluate blockchain protocols.
• Develop hardening plans for wallet systems.
• Drive re-architecture of existing software systems.
• Participate in security audits and drive remediation.

Skills

Java

Go

Rust

C++

Distributed systems design

Secure coding standards

Threat modeling

Penetration-testing mindset

Education

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

Job description

BIT (formerly Matrixport) is a global digital asset financial services and infrastructure group. Headquartered in Singapore and founded in 2019, BIT bridges traditional finance and digital assets through governance-driven financial services and technology.

The firm manages over US$7 billion in assets and facilitates more than US$7 billion in monthly trading volume. BIT offers services including custody, trading, asset and wealth management, liquidity and financing solutions, and tokenised real-world assets (RWA), serving institutional and professional investors globally.

BIT Group entities maintain a licensed and regulated footprint across Singapore, Hong Kong, Switzerland, the United Kingdom, the United States and Bhutan.

For more information, visit www.bit.com

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.
• 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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