12 Crypto & Blockchain jobs in South Africa

Position Summary: The Senior Blockchain Developer will play a key role in leading the design, development, and deployment of blockchain solutions. You will work closely with our team of developers, architects, and engineers to design and implement scalable and secure blockchain applications. This role requires deep expertise in blockchain technology, smart contract development, and decentralized application (DApp) development. The ideal candidate is a creative problem-solver with a passion for blockchain technology and a track record of delivering high-quality solutions.

Key Responsibilities:

• Lead the design, development, and implementation of blockchain-based solutions using industry-standard protocols and frameworks.
• Architect and develop smart contracts and decentralized applications (DApps) on blockchain platforms such as Ethereum, Hyperledger Fabric, or Binance Smart Chain.
• Design and implement scalable and secure blockchain architectures, including consensus mechanisms, cryptographic techniques, and security protocols.
• Conduct code reviews, testing, and debugging to ensure the quality, reliability, and security of blockchain applications.
• Collaborate with cross-functional teams to integrate blockchain solutions into existing systems and applications.
• Stay up-to-date with the latest developments in blockchain technology, industry trends, and emerging use cases.
• Provide technical leadership and mentorship to junior developers, guiding them in best practices and methodologies.
• Contribute to the documentation, tutorials, and educational materials to support the adoption of blockchain technology.

Qualifications:

• Bachelor's or master's degree in Computer Science, Information Technology, or a related field.
• 5+ years of experience in software development, with at least 3 years of experience in blockchain development roles.
• Deep understanding of blockchain concepts, protocols, and frameworks.
• Experience with blockchain platforms such as Ethereum, Hyperledger Fabric, or Binance Smart Chain.
• Proficiency in smart contract development and decentralized application (DApp) development.
• Strong analytical and problem-solving skills, with a keen attention to detail.
• Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
• Proven track record of delivering high-quality blockchain solutions in a fast-paced and dynamic environment.

Join to apply for the Backend Developer - Blockchain Integrations (100% remote) role at Tether.io .

About the Job

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other teams to advance the toolkit's capabilities. Prior experience with wallet creation or in DeFi is beneficial.

Responsibilities

• Develop innovative solutions using agile methodologies and cutting-edge technologies.
• Ensure backend services are scalable, responsive, and real-time to support platform growth.
• Maintain high security standards to protect user assets and data.
• Utilize +5 years of experience with Node.js and JavaScript.
• Build or integrate crypto wallets for DeFi and blockchain applications.
• Design modular architectures for scalable applications.
• Develop complex platforms and APIs.
• Understand Peer-to-Peer technologies.
• Adapt quickly to new technologies.
• Implement best security practices.

Nice to have

• Experience with high-availability systems.
• Knowledge of Go, Rust, or C++.
• Familiarity with message queues (Redis), caches, and job queues.
• Experience in React Native, Flutter, or native mobile development.

Important information for candidates

Be cautious of scams: apply only through official channels, verify recruiter identities, and be wary of unusual communication or requests for payment.

For inquiries, contact us via our official website.

• Seniority level: Not Applicable
• Employment type: Full-time
• Job function: Information Technology
• Industries: Technology, Information and Internet

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products; we’re pioneering a global financial revolution. Our solutions enable seamless integration of reserve-backed tokens across blockchains for businesses such as exchanges, wallets, payment processors, and ATMs. By leveraging blockchain technology, Tether allows you to store, send, and receive digital tokens instantly, securely, and globally, at a fraction of the cost. Transparency is fundamental to our operations, ensuring trust in every transaction.

Innovate with Tether

Tether Finance: Our product suite includes the world’s most trusted stablecoin, USDT, used by hundreds of millions worldwide, along with digital asset tokenization services.

And that’s just the beginning:

Tether Power: Focused on sustainable growth, our energy solutions optimize excess power for eco-friendly Bitcoin mining in geo-diverse facilities.

Tether Data: Supporting AI and peer-to-peer tech, we reduce infrastructure costs and improve global communication with solutions like KEET, our flagship app for secure, private data sharing.

Tether Education: Making digital learning accessible, empowering individuals to thrive in digital and gig economies, and fostering global growth.

Tether Evolution: At the crossroads of technology and human potential, we push boundaries to create a future where innovation and human capabilities merge seamlessly.

Why Join Us?

Our team is a global talent hub, working remotely worldwide. If you’re passionate about fintech innovation, this is your chance to collaborate with top minds, push boundaries, and set industry standards. We’ve grown rapidly, maintained agility, and established industry leadership.

If you have excellent English communication skills and want to contribute to the most innovative platform on Earth, Tether is for you.

Ready to shape the future?

About the job

The Wallet Development Kit (WDK) Software Engineer develops Tether's open-source toolkit for self-custodial wallet applications across mobile and desktop platforms. This role involves designing, implementing, and collaborating with teams to enhance the toolkit’s capabilities. Experience with wallet creation or DeFi is a plus.

Responsibilities

Innovative Solutions: Contribute to groundbreaking projects using agile methods and new technologies.

Scalability: Ensure backend services are responsive and real-time, supporting growth and user demands.

Security: Maintain high security standards to protect user assets and data.

Expertise in Node.js and JavaScript: +5 years of experience.

Experience with crypto wallets for DeFi and blockchain apps.

Modular Architecture: Familiarity with scalable application design.

Complex Platform Development: Proven experience in developing complex platforms and APIs.

Peer-to-Peer Technologies: Understanding of P2P tech.

Quick Learner: Ability to adapt swiftly to new technologies.

Security Awareness: Strong grasp of security best practices.

Nice to have

High-Availability: Experience with system reliability practices.

Additional Skills: Knowledge of Go, Rust, or C++ is advantageous.

Experience with message queues (Redis), caches, and job queues.

Mobile Development: Experience with React Native, Flutter, or native mobile platforms.

Important Information for Candidates

Beware of scams: Apply only via our official channels listed on our careers page . Verify recruiters’ identities through verified LinkedIn profiles. All official communication will come from @tether.to or @tether.io emails. We will never ask for payments or financial info. Contact us through our official website if unsure.

This role will meet the business needs to comply with onboarding obligations onmatters involving digital assets and web3 protocols (including to meetrequirements of VASP licence applications) and support the forensic andinvestigations team with blockchain tracing by operating relevant digital assettracing software, to complete screening checks and asset tracing exercises.

MAIN RESPONSIBILITIES AND DUTIES

• Digital asset investigations including blockchain tracing analysis and sanctions screening.
• Blockchain review, analytics, analysis and assisting with preparation of reports.
• Set up systems for digital asset investigations including software licensing and outsourcing.
• Operate relevant software.
• Assistance with onboarding clients, compliance and enhanced due diligence checks, eDiscovery, corporate intelligence and/or general fraud and misappropriation investigations or other tasks as appropriate to experience.

ESSENTIAL REQUIREMENTS

• Demonstrable knowledge of Web3 ecosystem with proven experience with crypto and digital assets.
• Certified Cryptocurrency investigator or equivalent qualification.
• Another relevant qualification eg. CFA, CFE, ACEDs, ACAMs, and/or bachelor’s degree or higher and/or web3/digital asset programming experience.
• 3-5 years’ relevant PQE.
• Experience using relevant tracing software such as Elliptic or Chainalysis reactor, ideally with experience using software for tracing (related to fraud/misappropriation).
• Ideally with knowledge in solidity language and smart contracts on ETH, SOL, and other blockchains.
• Solid written, IT systems and numeric skills.

Whether you are just starting out or seeking new challenges, JTC offers an environment where you can grow, develop, and succeed at every stage of your career.

Stay up to date with expert insights, latest updates and exclusive content.

Token Metrics is a cryptocurrency investment research platform that’s driven by machine learning and artificial intelligence. The company was founded by Ian Balina in 2017 as he traded his way from $20,000 to more than $5 million, logging all his trades in a public-facing spreadsheet that drew more than a million unique visitors per month. Ian’s Moneyball-style approach to crypto investing now forms the basis of the Token Metrics platform, which now helps thousands of customers around the world profitably play the crypto markets.

Token Metrics is seeking a highly skilled and enthusiastic Developer Relations Engineer to join our dynamic team. This role combines expertise in blockchain technology, artificial intelligence, and developer community engagement.

• Serve as the primary liaison between Token Metrics and the developer community, fostering strong relationships and driving adoption of our platform
• Create comprehensive technical documentation, tutorials, and sample code to support developers using our tools and APIs
• Develop and deliver engaging presentations, workshops, and webinars on Token Metrics' technology and its applications in the crypto and AI space
• Collaborate with the product and engineering teams to gather developer feedback and influence product roadmap
• Actively participate in blockchain and AI conferences, hackathons, and online forums to promote Token Metrics and stay abreast of industry trends
• Build and maintain demo projects showcasing the capabilities of Token Metrics' platform, with a focus on integrating AI and blockchain technologies

• Proven experience in developer relations, technical evangelism, or a similar role within the blockchain or AI industry
• Strong programming skills in TypeScript, Python, Solidity, and Rust
• Hands-on experience with the ai16z framework for building AI agents
• Excellent verbal and written communication skills, with the ability to explain complex technical concepts to diverse audiences
• Deep understanding of blockchain technology, cryptocurrencies, and decentralized applications
• Familiarity with AI and machine learning concepts, particularly in their application to the crypto space
• Bachelor's degree in Computer Science, Software Engineering, or a related field
• Passion for emerging technologies and ability to quickly learn and adapt to new tools and frameworks

• Experience contributing to open-source projects in the blockchain or AI domains
• Knowledge of token economics and DeFi protocols
• Previous work with large language models and AI agents
• Track record of creating developer-focused content (blog posts, videos, podcasts)

Token Metrics is a leading platform in the cryptocurrency space, providing advanced analytics and insights to empower investors and traders. We are committed to delivering high-quality, secure, and user-friendly SaaS solutions. We are seeking a dedicated Crypto QA Engineer who is deeply immersed in the crypto ecosystem and passionate about ensuring the reliability and security of our products.

1. Develop and Execute Test Strategies: Create and implement comprehensive test plans and test cases for our SaaS applications and APIs, focusing on functionality, security, and performance.
2. Automate Testing Workflows: Utilize tools to automate testing processes and enhance efficiency.

Job Description

We are a startup company based in New York, seeking the world’s most effective developers who are also a cultural fit to work on projects that increase Human Agency.

We want the best of the best—people who love what they do and are legitimately excellent at it.

Are you one of them?

If your answer is an unequivocal yes, this might not be the right fit for you.

We also value humility, self-awareness, eagerness to grow, and a team-oriented mindset. We want people who are results-driven, care about helping their team, and prioritize impact over titles.

What can we offer?

• A genuine meritocracy that values actual skills over titles or talk.
• Collaboration with like-minded professionals, avoiding toxic or unproductive colleagues.
• An intensive onboarding bootcamp to challenge, test, and train new hires, ensuring a good fit.
• A supportive environment where everyone strives for high performance and helps each other succeed.
• Work on exciting technical and product challenges, including complex blockchain projects, innovative web and mobile applications, and data science initiatives.

Opportunities include working across various industries and stacks, from startups to enterprises.

Compensation includes competitive pay, regular performance-based raises, and perks like retreats, a nice office, health and pet insurance, and celebrations.

Technologies you'll work with mostly include JavaScript and related frameworks/libraries:

• JavaScript / TypeScript
• React / Angular / Nullstack
• Node / Next.js / Apollo
• EVMs / Solidity
• Flow / Cadence
• Solana / Metaplex / Rust
• Truffle / Hardhat
• web3.js / ethers.js

You will:

• Work full-time with a talented team.
• Engage in both internal and client projects.
• Build modern, efficient, and well-tested applications.
• Communicate regularly with clients.
• Review code contributions from team members.
• Proactively solve problems with a founder mentality.
• Wear any hats necessary to get the job done.

About You

• Effective communication in English is a must.
• At least 5+ years of experience with our tech stack.
• Strong problem-solving skills, ownership mentality, and ability to work independently.
• Willingness to learn new technologies and adapt to different environments.
• Experience with Agile methodologies.
• Growth mindset and a passion for accomplishing goals.

Other Information

• Remote work and flexible schedule.
• Monthly salary in USD.
• Equity options across multiple companies.
• Health insurance after 3 months, English classes, and other perks.

Interview Process

• Initial conversation to assess mutual fit.
• Coding test.
• Final interview.

We value long-term relationships. If you leave on good terms, you can retain 20% of your equity if you continue to refer leads and share our values. If you leave for another project, you retain 100% of your equity.

Salary Range

First 3 months: $12,000 – $6,000 USD

After 3 months: 16,000 – $2 ,000 USD

Epic Adventure Overview:

In the vast digital kingdom of blockchain, a new quest awaits! We seek a valiant Senior Smart Contract Wizard with a grand saga in NFT development to join our team of digital explorers. In this prestigious role, you’ll conjure smart contracts to empower our NFT ecosystem. Allied with fellow product strategists, design sorcerers, and engineering knights, you’ll weave potent and scalable magic for our platform.

Who We Are:

Game7 is a community formed to accelerate the adoption of Web3 gaming through crowdsourcing, to create public goods that can be owned by many. It’s a home for those who want to influence, shape, and build a better gaming industry, where the interests of players and developers are aligned. We are building a gaming nation, one that represents over 3 billion players and $200 billion in annual economic activity.

Our nation is governed by meritocracy, a system where a citizen’s contributions, not capital, grant them status, rewards and influence. It’s this philosophy that will create a more equitable and sustainable gaming future.

Your Heroic Responsibilities:

• NFT Smart Contract Craftsmanship: Forge, enhance, and deploy impregnable smart contracts on blockchain battlegrounds, with a special focus on NFT artifacts. Apply the ancient wisdom of code quality, security, and gas conservation.
• NFT Architecture Enchantment: Collaborate with the product council to architect the technological backbone for NFT-centric features. Lead the charge in NFT development, shaping the future of our digital dominion.
• NFT Standards and Integration Mastery: Keep your knowledge as sharp as a dragon’s tooth on the latest blockchain innovations, NFT standards, and industry movements. Integrate emerging protocols and mystical services into our NFT ecosystem.
• Testing and Auditing Alchemy: Perform rigorous testing, debugging, and auditing of your smart contract creations to ensure they withstand the tests of functionality, security, and compliance. Embrace automated testing spells and conduct code reviews for a steadfast codebase.
• Optimization and Scalability Wizardry: Continually enhance your smart contract spells for peak efficiency, scalability, and performance. Tackle any bottlenecks and potential threats lurking in our NFT ecosystem.
• Collaboration and Leadership Valor: Provide guidance and wisdom within your team, elevating the technical knowledge of your fellow adventurers. Share your expertise in smart contract development and NFT lore.
• Documentation and Knowledge Chronicles: Forge comprehensive technical tomes, including architectural blueprints, coding standards, and best practices. Cultivate an environment of learning and sharing within your fellowship.

Your Arsenal and Spells (Requirements):

• Academic Scrolls: Bachelor’s or Master’s scroll in Computer Science, Engineering, or a mystical equivalent.
• Battle Experience: Minimum 6 years as a Smart Contract Engineer, with a legendary focus on NFT development.
• Technical Mastery:
• Expertise in blockchain runes, Ethereum, and smart contract crafting.
• Skilled in hardhat, typescript for testing and deploying Solidity spells.
• Proficiency in Solidity, Vyper, or similar arcane languages.
• Deep knowledge of NFT standards like ERC-721, ERC-1155, and ERC-2535 Multi-Faceted Proxy.
• Familiarity with ERC-6551 and ERC-4337 standards is a bonus.
• Experience in integrating with NFT platforms, marketplaces, and protocols.
• Problem-Solving Wizardry: Strong analytical skills to solve complex technical puzzles. A keen eye for detail, ensuring code quality, security, and efficiency.
• Collaboration and Communication Charisma: Excellent interpersonal skills for effective collaboration with cross-functional teams. A positive team spirit, fostering a unified and collaborative environment.
• Thirst for Knowledge: A burning passion to stay abreast of the latest blockchain and NFT technologies. Eagerness to learn new magical languages and frameworks.

Join our Quest!

Embark on this journey and play a pivotal role in the NFT revolution. Apply today with your updated resume, showcasing your epic tales and achievements in the realm of smart contracts and NFTs. Your adventure starts here!

RESEARCH GROUP LEADER : DISTRIBUTED LEDGER TECHNOLOGY (DLT)

Lead a research group in Distributed Ledger Technology (DLT) and blockchain, driving innovation, and strategic growth. Provide technical and strategic leadership, manage teams, and develop business partnerships.

KEY RESPONSIBILITIES :

Lead research in DLT and blockchain

Develop and implement research strategies

Manage teams and provide technical leadership

Drive business growth and strategic partnerships

Develop and manage budgets

REQUIREMENTS :

Masters degree in computer science / engineering, IT, or related field

5+ years of experience in DLT / blockchain research

Proven track record in project management and leadership

Excellent communication and business development skills