87 Blockchain jobs in Singapore

Blockchain Developer

Responsibilities

1.Design, develop, and deploy blockchain-related products, including smart contracts and decentralized applications (DApps).

2.Research and optimize the performance of mainstream public chains (e.g., Ethereum, EOS), consortium chains, or private chains.

3.Collaborate with teams to integrate blockchain technology with existing systems, ensuring data security and consistency.

4.Stay updated with blockchain technology trends and explore applications in token economies and decentralized finance (DeFi).

Qualifications

1.Bachelor's degree or higher in Mathematics, Computer Science, or a related field.

2.At least 2 years of blockchain development experience, with proficiency in Solidity, Rust, or Go.

3.Strong expertise in smart contract development and security auditing, with familiarity in tools like Truffle and Hardhat.

4.Knowledge of cryptographic principles (e.g., hashing, asymmetric encryption); experience with distributed systems is a plus.

5.Passion for the Web3.0 ecosystem; contributions to open-source projects or DApp cases are highly advantageous.

About the Role

We are seeking a skilled Blockchain Developer to join our team and contribute to the design, development, and deployment of blockchain-based solutions. You will be responsible for building smart contracts, decentralized applications (dApps), and blockchain infrastructure that align with business requirements.

Key Responsibilities

• Design, develop, and implement smart contracts and decentralized applications (dApps).

• Build and maintain blockchain protocols, consensus mechanisms, and APIs.

• Write secure, efficient, and clean code for blockchain integrations.

• Collaborate with product, engineering, and research teams to design scalable blockchain solutions.

• Conduct security audits and testing of smart contracts and blockchain systems.

• Stay updated on industry trends, emerging technologies, and best practices in blockchain development.

• Optimize existing blockchain applications for performance, scalability, and reliability.

Requirements

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience).

• Strong programming skills in languages such as Solidity, Go, Rust, JavaScript/TypeScript, or Python.

• Hands-on experience with blockchain platforms.

• Understanding of cryptographic principles, data structures, and distributed systems.

• Experience with smart contract development, testing, and deployment tools

• Familiarity with web3 frameworks and libraries

• Knowledge of security best practices in blockchain development.

We are hiring for one of our ecosystem projects in the digital asset space, we are looking for a Blockchain Developer to design, develop, and implement blockchain-based solutions for a high-performance trading system. The ideal candidate will have expertise in blockchain technologies, smart contract development, and trading system architecture, ensuring secure, scalable, and efficient solutions for decentralized trading applications.

Job Description

• Design and develop blockchain-based trading platforms, including decentralized exchanges (DEX), automated market makers (AMM), or order-book systems.
• Write, test, and deploy secure smart contracts using platforms such as Ethereum, Binance Smart Chain, Solana, or other blockchain networks.
• Integrate blockchain solutions with front-end and back-end systems to enable seamless trading functionality.
• Implement security best practices to protect against vulnerabilities, including reentrancy attacks, front-running, and unauthorized access.
• Optimize smart contracts for gas efficiency and system performance to handle high-frequency trading scenarios.
• Collaborate with cross-functional teams, including traders, product managers, and DevOps engineers, to define system requirements and ensure alignment with business goals.
• Ensure compliance with relevant financial regulations and standards for trading systems.
• Monitor and maintain blockchain nodes, ensuring uptime and reliability of the trading infrastructure.
• Stay updated on emerging blockchain technologies, protocols, and industry trends to enhance system capabilities.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience).
• 3+ years of experience in blockchain development, with a focus on building decentralized applications (dApps) or trading systems.
• Proficiency in programming languages such as Solidity, Rust, or Go for smart contract development.
• Strong understanding of blockchain protocols (e.g., Ethereum, Solana, Polygon) and consensus mechanisms (e.g., PoW, PoS).
• Experience with trading system concepts, including order matching, liquidity pools, or market-making algorithms.
• Familiarity with DeFi protocols, token standards (e.g., ERC-20, ERC-721), and interoperability frameworks.
• Knowledge of cryptographic principles, including public/private key infrastructure and hashing algorithms.
• Experience with tools like Truffle, Hardhat, or Foundry for smart contract development and testing.
• Understanding of front-end and back-end integration (e.g., , , REST APIs).
• Strong problem-solving skills and attention to detail in writing secure and efficient code.
• Excellent communication and collaboration skills to work in a fast-paced, team-oriented environment.

Nice To Have

• Experience with layer-2 scaling solutions (e.g., Optimism, Arbitrum) or cross-chain bridges.
• Knowledge of financial markets, trading strategies, or algorithmic trading.
• Familiarity with cloud platforms (e.g., AWS, Azure) and containerization (e.g., Docker, Kubernetes).
• Contributions to open-source blockchain projects or active participation in blockchain communities.
• Understanding of regulatory frameworks for cryptocurrencies and trading platforms (e.g., KYC/AML compliance).

About Magent

Magent, a Reap Company, is redefining how crypto natives and hybrid users spend and earn by bridging decentralized finance (DeFi) with real world transactions. Unlike traditional crypto cards, Magent doesn't just enable spending, we allow for idle crypto assets to work for users through automated DeFi earnings. By partnering with wallets and DeFi protocols, Magent creates a low risk, high utility financial experience, bringing true DeFi powered financial freedom to a global audience. This is a chance to join early and play a key role in shaping the future of Magent.

The Role

As a key member of the Magent team, you'll be designing and maintaining smart contracts on Solana and working closely with backend systems ) as core parts to the role. You'll optimize for reliability, security, and scalability. Cross chain experience (e.g., token bridges, interoperability protocols) is a plus, as we aim to expand blockchain support beyond Solana.

This role is ideal for someone who is also commercially minded and understands how technical decisions can affect the user experience and business model.

What You'll Do

• Develop and maintain Solana programs in Rust that support existing product features and DeFi integrations in addition to future product builds.
• Build and optimize backend services ) to support on-chain integrations.
• Collaborate with the product team to translate business logic into secure, on chain functionality and new experiences.
• Participate in architecture decisions, especially for cross-chain expansion and scalability.
• Contribute to code reviews, audits, and performance optimization.

What We're Looking For

• Lateral thinker/problem solver who thrives in positions of autonomy and who is looking to take oversized ownership while getting their hands dirty in a start up environment.
• Strong proficiency in Rust and Solana program architecture.
• Strong Typescript and backend development experience.
• Understanding of blockchain engineering.
• Experience using and technical understanding of the Solana DeFi ecosystem.
• Ability to work in a lean, minimal-tooling environment.
• Bonus: cross-chain development experience, credit/finance systems or credit card industry knowledge.

Why Join Us

You'll be working directly with the co-founders on a high impact product from the ground up. Your work will directly power a crypto credit card product that merges DeFi and traditional payments. We're small, fast, and building something that the market hasn't seen; you'll be a core part of making it happen.

Job Responsibilities:
1.Design, develop, and deploy blockchain-related products, including smart contracts and decentralized applications (DApps).
2.Research and optimize the performance of mainstream public chains (e.g., Ethereum, EOS), consortium chains, or private chains.
3.Collaborate with teams to integrate blockchain technology with existing systems, ensuring data security and consistency.
4.Stay updated with blockchain technology trends and explore applications in token economies and decentralized finance (DeFi).
Job Requirements:
1.Bachelor's degree or higher in Mathematics, Computer Science, or a related field.
2.At least 1 years of blockchain development experience, with proficiency in Solidity, Rust, or Go.
3.Strong expertise in smart contract development and security auditing, with familiarity in tools like Truffle and Hardhat.
4.Knowledge of cryptographic principles (e.g., hashing, asymmetric encryption); experience with distributed systems is a plus.
5.Passion for the Web3.0 ecosystem; contributions to open-source projects or DApp cases are highly advantageous.

Blockchain Developer

Responsibilities

1.Design, develop, and deploy blockchain-related products, including smart contracts and decentralized applications (DApps).

2.Research and optimize the performance of mainstream public chains (e.g., Ethereum, EOS), consortium chains, or private chains.

3.Collaborate with teams to integrate blockchain technology with existing systems, ensuring data security and consistency.

4.Stay updated with blockchain technology trends and explore applications in token economies and decentralized finance (DeFi).

Qualifications

1.Bachelor’s degree or higher in Mathematics, Computer Science, or a related field.

2.At least 2 years of blockchain development experience, with proficiency in Solidity, Rust, or Go.

3.Strong expertise in smart contract development and security auditing, with familiarity in tools like Truffle and Hardhat.

4.Knowledge of cryptographic principles (e.g., hashing, asymmetric encryption); experience with distributed systems is a plus.

5.Passion for the Web3.0 ecosystem; contributions to open-source projects or DApp cases are highly advantageous.

About SwiftBridge

. SwiftBridge is building a next-generation middleware infrastructure connecting the global SWIFT banking network (MT103, GPI) with blockchain technology

. Our mission is to enable banks and financial institutions to tokenize, trace, and automate cross-border transactions securely and at scale

Key Responsibilities

. Design, develop, and optimize smart contracts (ERC20, ERC721, ERC1155) for financial transactions

. Implement tokenization frameworks for SWIFT MT103 message integration into blockchain transactions

. Collaborate with backend/API engineers to connect traditional banking systems with blockchain infrastructure

. Ensure robustness, scalability, and high security in all smart contract deployments

. Conduct code reviews, audits, and testing for compliance with industry standards

. Stay ahead of DeFi, zk-SNARKs, and Layer 2 rollup technologies, and bring innovative solutions to production

Qualifications

. 4+ years of experience in blockchain development (Ethereum, EVM-compatible chains)

. Strong knowledge of Solidity, Hardhat, Truffle, or Foundry

. Experience with token standards (ERC20, ERC721, ERC1155) and DeFi protocols

. Understanding of cryptography, smart contract security, and common vulnerabilities

. Familiarity with SWIFT/financial systems is a plus but not required

. Ability to work in a fast-paced startup environment with autonomy and accountability

What We Offer

. Opportunity to build a disruptive infrastructure bridging banking and blockchain

. Remote-first culture with global team collaboration

. Competitive package (salary + equity options)

. Exposure to institutional investors and top-tier banking/fintech partners

About the Role
We are seeking a
DeFi Engineer
to drive protocol integrations and scale our trading infrastructure across multiple blockchains. This role covers the full gamut of
DeFi trading
from the development of data pipelines and smart contracts to the low-latency off-chain execution infrastructure. You will work closely with trading and research teams to ensure our systems are fast, reliable, and scalable across Ethereum and L2s, as well as other non-EVM ecosystems.
Key Responsibilities
Design and develop robust integrations with leading DeFi protocols
Write and operate gas-efficient smart contracts to better interact with other protocols
Optimize the execution pipelines for each chain (e.g. order routing and transaction broadcasting)
Monitor and tune systems to benchmark and improve performance
Ensure that systems are resilient and follow best practices
Qualifications
Experience in
DeFi protocol integration
and smart contract development.
Proficiency in backend/system programming languages (Rust, Typescript preferred).
Solid understanding of blockchain environments such as EVMs, SVMs and MVMs.
Experience in the development of
latency-sensitive systems , ideally in the trading domain.
Experience with monitoring and performance tuning (Prometheus, Grafana, custom latency metrics).
Nice to Have
Experience with
HFT market-making .
Contributed to DeFi or blockchain projects.
Familiarity with MEV ecosystems, builder marketplaces, and advanced blockchain execution techniques.
Experience scaling across heterogeneous blockchain environments.
About Tokka Labs
Tokka Labs is a proprietary trading firm specializing in digital assets within the blockchain space. Founded in 2022 and based in Singapore, we are pioneers in digital asset trading, focusing on close collaboration, rigorous research, and cutting-edge technology. As experienced market makers for top protocols on popular blockchains, we enhance market efficiency by identifying and arbitraging mis-pricings, while providing liquidity in the blockchain ecosystem. We are committed to innovation and excellence in the fast-paced world of decentralized finance (DeFi), on-chain, and cross-chain trading.
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Required Skills and Experience

About the Role

We are seeking an APAC Community Lead to spearhead Sei's presence across the Asia Pacific region. In this role, you will build and manage a strong network of regional advocates and KOLs, leading the strategy to grow Sei's community reach and engagement.

You will be responsible for driving localized community growth, creating systems to scale advocacy, and ensuring Sei's messaging and brand are consistently represented across APAC markets. Working closely with Sei's growth, community, and product teams, you will help establish Sei as a leading Layer 1 blockchain in the region.

Key Responsibilities

Identify, onboard, and manage a network of APAC-based advocates and KOLs to grow Sei's mindshare.

Build scalable systems to activate and track advocate output across content, engagement, and brand presence.

Coordinate regular touchpoints with top contributors to align on messaging, product updates, and campaigns.

Source and manage localized amplification opportunities (KOL cross-posting, Twitter Spaces, content syndication).

Work with cross-functional teams to ensure consistency in regional messaging and strategy execution.

Why Candidate should apply this position

What We're Looking For

Crypto-native with a deep understanding of APAC social and community dynamics.

Strong personal brand: at least 1,000 followers on X (Twitter) with good content quality & engagement.

Experience working directly with KOLs, creators, and contributors across multiple platforms.

Strong narrative judgment with the ability to align advocates with Sei's positioning.

Fluent in English and at least one major APAC language (Mandarin, Korean, Japanese, Bahasa, Vietnamese, etc.).

Nice to Haves

Previous experience at a large blockchain foundation or traditional finance institution.

Proven success building social communities for a Layer 1 blockchain or large-scale DeFi project.

Strong existing network of influencers and creators in the crypto space.

Compensation & Package

Base Salary + Equity/Tokens