Senior Backend Developer (Web 3)

Design and implement cutting-edge Digital Asset Management trading systems.Maintain, upgrade, transform, and optimize the performance of existing systems.Oversee the overall architecture design and future-proofing of the trading system.Lead pivotal projects and collaborate in overcoming technical challenges.

Lead the design and optimization of critical trading infrastructure, including matching engines and order management systems. Spearhead code development ensuring the platform can handle high-concurrency trading operations and deliver low-latency responses at millisecond precision. Conduct performance tuning for high-frequency trading scenarios, employing advanced technologies such as lock-free queues, memory pools, and zero-copy networking to enhance throughput and minimize latency.Create cohesive architectural solutions to facilitate the rapid development of products such as spot, perpetual contracts, and options, eliminating redundant workflows. Possess an in-depth understanding of derivative mechanisms to guarantee the precise implementation of complex product logics and effective risk management.Oversee troubleshooting and performance enhancements in production settings to maintain optimal system availability. Develop comprehensive end-to-end monitoring systems for real-time alerts on key metrics and performance insights.Keep pace with industry advancements, advocate for the integration of innovative technologies, and persistently refine the architecture of the trading system.

Design and implement the risk control system for our cutting-edge Digital Asset Management platform.Oversee the maintenance, upgrades, transformation, and performance optimization of the existing systems.Lead the architectural design and strategic vision for the risk control asset system.Drive key projects and collaborate on overcoming technical challenges.

About Us At startale, in collaboration with one of the world's largest financial conglomerates, we are on a mission to revolutionize the trading landscape by bringing Japanese equities on-chain. Our goal is to establish a secure, transparent, and high-performance trading infrastructure capable of supporting institutional trading volumes while remaining accessible to retail investors. We are developing a cutting-edge decentralized exchange featuring a fully on-chain order book, designed with a custom state transition function and a consensus layer specifically for high-performance, low-latency trading. Our aim is to create a trustless platform that matches the speed and efficiency of traditional trading engines while maintaining complete transparency by executing as close to the blockchain as possible. Position Overview We are looking for a Senior Rust Backend Engineer with substantial experience in constructing high-performance, reliable trading APIs (HTTP & WebSocket). In this role, you will be responsible for the design, implementation, and optimization of the backend services that power our trading interfaces, ensuring low latency, resilience, and accuracy under load. You will engage with high-throughput, real-time systems that manage order and trade data ingestion, handle live WebSocket feeds, and maintain the internal consistency of state from streaming market events. The ideal candidate will be a proficient Rust engineer and a systems thinker, able to reason about concurrency, data flow, and observability in production environments. This position provides a unique chance to influence the architecture of our trading backend at an early stage, collaborating with a distributed team of experienced engineers to build next-generation financial infrastructure.

Join our dynamic Quantitative Trading team, dedicated to executing trades and managing the intricacies of risk across diverse cryptocurrency products, including both spot and derivative markets. Our team thrives in a fast-paced, complex trading environment, continuously developing and refining innovative trading strategies.We are on the lookout for a seasoned Trading Analytics Developer to enhance our Quant Trading team. In this crucial role, you will advance our data and AI infrastructure, merging traditional quantitative development with state-of-the-art AI platform engineering. Your focus will be on creating robust, scalable systems designed to handle both data analytics and artificial intelligence workloads. The ideal candidate will adeptly connect high-performance trading systems with modern AI capabilities, ensuring exceptional reliability, optimized performance, and actionable insights across both fields.

Join Substance, a forward-thinking technology firm, as an API Web Developer. We are in search of a creative and meticulous developer who will play a pivotal role in crafting, developing, and sustaining high-performance APIs that facilitate seamless communication between diverse systems and applications. Your contributions will enhance user experience and promote effective data exchange.Key Responsibilities: Design and create high-performance RESTful APIs tailored to meet the requirements of both internal and external clients. Work closely with front-end developers and other stakeholders to ensure seamless integration of APIs with user-facing components. Guarantee API security, performance, and reliability through comprehensive testing and detailed documentation. Monitor and enhance API performance utilizing analytics and feedback from users. Engage in architectural discussions, contributing to the development of our technology stack and best practices. Identify and resolve issues in API applications, overseeing bug fixes and updates as needed. Stay updated with emerging technologies and industry trends to maintain cutting-edge APIs that deliver business value. Requirements: Bachelor's degree in Computer Science or a related discipline. Minimum of 2 years of experience in API development, particularly in designing and building RESTful services. Proficient in programming languages such as Node.js, Python, Ruby, or Java. Solid understanding of API design principles and best practices, with emphasis on security and versioning. Familiarity with API documentation tools like Swagger or Postman is a plus. Experience with both relational (MySQL, PostgreSQL) and NoSQL (MongoDB) database systems. Ability to thrive in an Agile environment and actively participate in sprint planning and development cycles. Exceptional problem-solving abilities and meticulous attention to detail. Strong communication skills, capable of collaborating effectively with cross-functional teams. Benefits:At Substance, we prioritize action and meaningful connections. If your skills align with our needs, expect to hear from us within 1-2 weeks. We appreciate your interest and will keep your profile in mind for future opportunities that align with your expertise.

As a Senior Backend Developer specializing in Payments at fuku, you will play a vital role in designing, developing, and scaling high-performance payment systems that facilitate millions of transactions worldwide. Our payment infrastructure supports a diverse range of solutions, including international card networks, real-time QR payments, and high-volume switching platforms, ensuring optimal performance in both retail POS and e-commerce settings.In this impactful role, you will:- Architect and implement robust backend systems to integrate with major payment networks such as Visa, Mastercard, Amex, and UPI.- Develop secure, scalable solutions across the entire payment lifecycle, including authorization, clearing, settlement, and merchant onboarding.- Lead modernization efforts to transition legacy payment platforms to Linux RHEL or cloud environments.- Optimize switching systems to handle ultra-high transaction volumes, minimizing latency, ensuring resilience, and maintaining consistent uptime.- Collaborate with cross-functional teams, including product management, quality assurance, and business units, to deliver reliable, production-ready payment capabilities on a global scale.What you bring to the role:- Over 8 years of backend development experience, particularly within payment systems and transaction processing environments.- Strong expertise in C++, Linux, and scripting languages (e.g., Korn Shell) in high-availability production settings.- Proven experience with Base24, international card scheme integrations, and contemporary QR payment systems.- In-depth knowledge of databases (PostgreSQL/MySQL), messaging frameworks (IBM MQ), and performance tuning in distributed systems.- Familiarity with POS/EDC, ATM systems, and the broader payment infrastructure for both physical and digital transactions.This position offers an exceptional opportunity to influence real-world transactions, enhancing customer experiences and driving business growth. Join us at fuku, where you will face complex challenges in performance, security, and the evolution of payment solutions in a high-scale environment.

About WintermuteWintermute is a leading crypto-native algorithmic trading firm specializing in digital assets. We provide algorithmic liquidity across a multitude of cryptocurrency exchanges and trading platforms, offering a diverse range of OTC trading solutions. Additionally, we support notable blockchain projects and traditional financial institutions venturing into the crypto space. Wintermute Ventures, our investment arm, focuses on early-stage DeFi projects.Established in 2017 by industry pioneers, Wintermute has adeptly navigated the fluctuations of the crypto market. Our culture merges the high-tech standards of traditional high-frequency trading firms with the innovative and entrepreneurial spirit of tech startups. We view digital assets as more than a mere asset class; we believe in the transformative potential of blockchain technology and are committed to fostering a compliant and forward-thinking market. Read more here.Join Our Team at WintermuteWe are seeking a dynamic Trading Analyst with strong Python programming skills and a keen interest in high-frequency trading, market making, and cryptocurrency trading. In this role, you will collaborate closely with our trading team to enhance and optimize trading operations across various markets and strategies. You will gain valuable insights and be at the heart of the action, from supporting trading initiatives to coordinating with developers, while focusing on automation and scalability, and assisting the middle office in refining trade settlement and reconciliation processes.

About Us:DOHE is a pioneering global leader in the EdTech sector, based in Singapore with a branch in the United Kingdom. Our mission is to revolutionize education by responsibly harnessing technology to enhance the quality of learning and drive significant societal advancement.We are in the process of creating EdTech Hub, a worldwide ecosystem designed to empower startups, promote collaboration, and boost innovation in the education sector globally. Through our Go-Together Accelerator Programme, we assist EdTech founders in transforming their visions into realities with tailored coaching and strategic guidance. Utilizing our proprietary Navigator methodology, we establish clear and effective pathways to success for education innovators.In the next decade, we aim to accelerate the growth of over 5,000 EdTech startups worldwide.Every initiative we undertake is committed to supporting EdTech startups to positively impact society and fulfill our mission.As part of the EdTech Hub IT Team, you will help power the digital infrastructure of our ecosystem. We are responsible for designing, building, and maintaining secure, scalable, and reliable technology that facilitates seamless collaboration among startups, partners, and stakeholders.From platform development and data management to cybersecurity and system optimization, our team ensures that innovation is underpinned by robust, future-ready technology. By merging technical expertise with a thorough understanding of the EdTech landscape, we create an environment where startups can concentrate on growth while we handle the technology that propels it.

As we embark on an exciting expansion journey, Coinhako is seeking dynamic and driven individuals with a strong passion for the cryptocurrency sector.Key Responsibilities: 70% Product Management & DeliveryCollaborate closely with the CEO on roadmaps/OKRs; draft concise PRDs with clear acceptance criteria; manage backlog, sprint rituals, and vendor SLAs.Ensure quality through technical acceptance (API contracts, error handling, security/privacy); oversee UAT and release management processes (flags, canaries, rollback).Monitor product KPIs (activation, transaction success rate, custody approval SLAs, KYT false-positive rate) and spearhead improvement initiatives.30% Platform OperationsCoordinate EKS patching/upgrades; manage autoscaling, quotas, and FinOps.Maintain an organized Terraform setup (PR reviews, state/backends, drift prevention) and ensure GitHub Actions are efficient and reliable.Administer Cloudflare ZTNA (Access policies, tunnels, certificate rotation, WAF rules); uphold least-privilege IAM; confirm backup/DR strategies meet RPO/RTO standards.Manage Fireblocks policies/approvals/whitelists and Chainalysis rules; oversee webhook/integration monitoring.Ensure observability (CloudWatch/Grafana/alerts), define SLOs/error budgets, and lead incident response with precise RCAs.Desired Qualifications:Minimum of 5–8+ years in software/platform roles; demonstrated product delivery with vendors alongside hands-on experience with AWS/EKS/Terraform/GitHub Actions.Solid understanding of practical security measures: ZTNA (Cloudflare or similar), IAM, KMS/secrets management, backup/DR, logging/alerts.Familiarity with custody/KYT processes (Fireblocks/Chainalysis or equivalent) and their integration within product workflows.Experience managing Google Workspace IAM, Slack, Notion; knowledge of SSO/SAML/SCIM; maintaining good JML hygiene.Exceptional written communication skills; ability to make decisive, documentation-driven decisions.Advanced knowledge or experience in Cryptocurrency/Blockchain/Fintech/Finance Trading sectors is preferred.

- Position: Senior Backend Engineer - Location: SingaporeResponsibilities:- Take ownership of designing and developing robust, high-performance backend services.- Collaborate closely with product and infrastructure teams to architect and implement APIs.- Automate deployment processes to guarantee efficient and reliable software releases.- Provide mentorship and support to fellow engineers within the team.Requirements:- A minimum of 3 years of experience in developing systems using Go or Python.- Deep understanding of distributed systems and their complexities.- Demonstrated success in working with microservices architecture.- Knowledge of cloud platforms, service meshes, and observability tools is highly desirable.This position offers the chance to tackle challenging backend engineering problems, work collaboratively across diverse teams, and play a key role in the growth and technical excellence of fuku.

Join our dynamic Quantitative Trading Team as a C++ Trading Developer in Singapore. Leverage your expertise to design and implement high-performance trading systems in the exciting world of cryptocurrency. Collaborate closely with traders and analysts to develop innovative trading strategies and algorithms that drive our business forward.

Join our dynamic team at crypto as a Senior Java Developer specializing in trading platforms. You will be pivotal in designing and implementing state-of-the-art trading solutions that deliver high performance and reliability. This is an opportunity to work at the forefront of the cryptocurrency sector, making a significant impact in a fast-paced environment.

Join our dynamic team at Crypto Inc. as a Trading Analytics Developer, where you will leverage your expertise in analytics and programming to enhance trading strategies and systems. You will work closely with traders and quantitative analysts to develop tools and applications that provide insightful analytics and performance metrics.Your role will involve optimizing existing systems and implementing new features that will directly impact trading performance. If you are passionate about financial markets and technology, this is the perfect opportunity for you to thrive in a fast-paced environment.

Role Overview Fuku is hiring a Senior Business Analyst with a focus on Capital Markets, Trading Systems, and Execution Management. This position is based in Singapore. What You Will Do Work closely with teams across the business to define requirements for trading and execution management systems. Analyze data and processes to identify areas for improvement in trading environments. Support the implementation of solutions that improve performance and efficiency in execution management. Who We Are Looking For Experience in capital markets and trading systems. Strong background in execution management processes. Ability to collaborate with cross-functional teams and communicate requirements clearly. Skilled at analyzing data and translating findings into actionable solutions. This role offers the chance to shape trading processes and support business growth at Fuku.

Join our innovative team at fuku as a Senior Backend Engineer, where you will play a pivotal role in designing, developing, and scaling our backend services to support a rapidly growing platform. You will be at the forefront of creating reliable and efficient systems that enhance user experience and operational efficiency.Responsibilities:- Architect, develop, and maintain backend services with a strong emphasis on reliability and scalability.- Create and manage APIs to facilitate seamless communication between services.- Improve service reliability, observability, and overall performance.- Collaborate closely with product and infrastructure teams to deliver exceptional solutions.- Optimize and enhance microservices architecture in a distributed systems environment.

Join fuku as a Senior Backend Engineer, where you will play a pivotal role in developing and maintaining scalable distributed systems that power our innovative products and services. As a key member of our engineering team, your responsibilities will include:- Designing and implementing backend services using Go and/or Python.- Creating and maintaining APIs to facilitate smooth integrations and communications across services.- Enhancing system performance and reliability through optimization techniques and proactive monitoring.- Collaborating closely with product and infrastructure teams to deliver robust and efficient solutions.

Join our innovative team at ncs3 as a Backend Systems Engineer. In this dynamic role, you will be responsible for designing, implementing, and maintaining robust backend systems that power our applications and services. You will collaborate closely with cross-functional teams to deliver high-quality software solutions that meet the needs of our users.

Join the Institutional Fabric of the Digital Asset MarketFounded in 2018, Talos delivers cutting-edge trading technology for institutional clients in the global digital asset market, empowering key players in the cryptocurrency ecosystem.At Talos, we are driven by a clear mission: to facilitate the widespread adoption of digital assets by seamlessly connecting institutions to the digital asset ecosystem. Our commitment is to develop the most innovative and trusted platform that supports the entire trading lifecycle.Our workplace fosters an environment of respect and kindness, cherishing diverse perspectives and promoting inclusivity. Every team member contributes unique insights that propel Talos forward, and we believe in a culture of trust, collaboration, and mutual growth. Together, we are ambitiously building something remarkable, where your skills and insights are vital to our collective success.Our team is a close-knit yet decentralized group of accomplished engineers and business professionals, operating in a hybrid-friendly setting, with physical hubs in New York, London, Singapore, and Cyprus.Role OverviewAs a Software Engineer within our Trading Connectivity team, you will be responsible for designing, developing, and maintaining high-performance backend systems that interface with our extensive network of liquidity providers. You will collaborate closely with product managers, trading support, other engineering teams, and clients to facilitate the integration and support of new liquidity providers into the Talos network. Your contributions will be pivotal in enhancing the scalability, reliability, security, and performance of our platform while managing the complete integration process from requirements gathering to deployment.