Backend Engineer

• Design, implement, and maintain high-performance backend services and core infrastructure components using Rust
• Build, optimize, and audit highly secure smart contracts for advanced decentralized virtual machine (EVM) environments
• Develop, refine, and optimize real-time trading infrastructure to achieve sub-millisecond end-to-end execution latencies
• Collaborate with foundational engineering teams on protocol architecture, cryptographic implementation, and scalable distributed system design
• Integrate privacy-preserving cryptography, including Trusted Execution Environments (TEEs), into the core transaction pipeline
• Participate in introductory, technical assessment, and practical evaluation stages

• Design, build, run, and improve backend systems across multiple mobile products
• Take problems from unclear starting points through architecture, implementation, deployment, and iteration
• Investigate systems not originally built by the engineer
• Work directly with product, frontend, data, and other engineers
• Improve existing systems and determine when rewrites are unnecessary
• Respond to and help resolve production incidents
• Understand system context, upstream and downstream effects, scaling risks, and engineering trade-offs
• Document decisions, communicate directly, and focus on outcomes
• Move between products, codebases, and technical contexts as priorities change

Senior Backend Engineer

• Design, develop, test, and maintain backend services supporting Binance Pay and Card products
• Build scalable APIs and microservices for payment processing, transaction management, merchant services, and related financial workflows
• Participate in developing distributed systems handling high-volume and latency-sensitive transactions
• Work with databases, caching systems, message queues, and infrastructure components to improve performance and reliability
• Implement transaction workflows with retries, idempotency, concurrency, and failure handling
• Assist with troubleshooting production issues using logs, metrics, tracing, and root-cause analysis
• Write clean, maintainable, well-tested code and participate in code reviews
• Collaborate with product and engineering teams to translate business requirements into technical solutions
• Contribute to system reliability, observability, security, and engineering practices
• Collaborate with backend engineers, product managers, QA engineers, and cross-functional teams to build reliable, secure, scalable payment services
• Work on backend systems powering crypto and fiat payment experiences for users and merchants globally

Backend Engineer, Pay & Card

• Own end-to-end data extraction workflows across complex websites, ensuring complete coverage, accuracy, and reliable delivery of structured datasets
• Leverage available tools and custom workflows to accelerate data collection, validation, and task execution while meeting defined requirements
• Ensure reliable extraction from dynamic and interactive web sources, adapting approaches to JavaScript-rendered content and changing site behavior
• Enforce data quality standards through validation checks, cross-source consistency controls, formatting specifications, and systematic verification before delivery
• Scale scraping operations for large datasets using efficient batching or parallelization
• Monitor failures and maintain stability against minor site structure changes
• Apply web scraping, data extraction, and data processing expertise to the Tendem project
• Use tools such as Apify, OpenRouter, and other technologies to complete scraping and processing tasks

Senior Python Data Scraping Engineer – Freelance

• Own end-to-end data extraction workflows across complex websites, ensuring complete coverage, accuracy, and reliable delivery of structured datasets
• Leverage tools and custom workflows to accelerate data collection, validation, and task execution while meeting defined requirements
• Ensure reliable extraction from dynamic and interactive web sources, adapting approaches for JavaScript-rendered content and changing site behavior
• Enforce data quality standards through validation checks, cross-source consistency controls, formatting specifications, and systematic verification before delivery
• Scale scraping operations for large datasets using efficient batching or parallelization, monitor failures, and maintain stability against minor site structure changes
• Apply expertise in web scraping, data extraction, and data processing for the Tendem project
• Utilize Apify, OpenRouter, and other technologies alongside technical expertise and custom approaches

Senior Python Data Scraping Engineer

• Collaborate with stakeholders to convert business requirements into services with solid code and meaningful tests
• Initiate performance tuning and troubleshoot incidents
• Write and maintain high-quality technical documentation
• Write high-quality code, follow best practices, and advocate for engineering excellence
• Collaborate across engineering teams and mentor junior team members
• Build a large-scale KYC platform
• Launch innovative products and integrate regional and global compliance vendors
• Apply AI/ML technologies responsibly while adhering to global and local regulatory standards

Backend Engineer – Java, Trading

• Design realistic and challenging coding tasks involving feature implementation and bug fixes.
• Create tasks that reflect authentic backend engineering workflows and practical software development challenges.
• Develop deterministic verifiers that accept reasonable valid solutions and reject incorrect implementations.
• Build and validate solutions using backend programming languages such as Java, Node.js, Go, Rust, TypeScript, Python, or C++.
• Develop tasks involving scalable services, APIs, debugging, performance optimization, and automated testing.
• Review code quality, maintainability, correctness, and adherence to technical requirements.
• Design evaluation criteria that distinguish robust solutions from superficially plausible implementations.
• Incorporate security considerations into tasks and verifiers where applicable.
• Document assumptions, expected behavior, edge cases, and validation requirements.
• Apply independent technical judgment throughout the task development and review process.

Software Engineer – Backend, AI Code Evaluation

• Develop and implement financial products, including wallets, payment gateways, cash rebates, merchant management, and compliance systems
• Build open API features for core financial products
• Communicate with product managers to design and implement product features supporting the payment system
• Perform performance tuning, troubleshoot online incidents, and refactor systems
• Write high-quality, clean, and maintainable code using engineering best practices

Java Engineer

• Design major aspects of application architecture, including user interface, middleware, and infrastructure
• Ensure uniform enterprise-wide application design standards are maintained
• Collaborate with stakeholders to align architecture with business-specific application needs
• Compile and implement application development plans for new or existing applications
• Lead the application development team and supervise design, testing, and modification stages
• Demonstrate application prototypes and integrate user feedback
• Write scripts and code for applications; install and update applications
• Mentor junior application developers and provide end-user technical support
• Run diagnostic tests and perform debugging procedures
• Perform application integration, maintenance, upgrades, and migration
• Document application development processes, procedures, and standards
• Integrate application architecture trends into development projects

• Development and implementation of infrastructure
• Build large-scale software systems
• Upgrade underlying infrastructure and architecture
• Performance tuning, online incident troubleshooting, and system refactoring
• Write high-quality, clean, and maintainable code using engineering best practices
• Guide junior engineers' daily work and conduct knowledge sharing

Backend Engineer jobs in Singapore