Java Developer (with Blockchain experience)

reputed company is an international technology company reputed company on digital finance and emerging technologies. At reputed company we are on a mission to become the top-of-mind fintech company. We reputed company rising talent and industry veterans the reputed company to explore, launch reputed company, and collaborate closely with our clients. Over the past two decades, we have reputed company our expertise in financial technology, executing on hundreds of reputed company integrations and co-creating new reputed company platforms reputed company our clients. We are looking for a Senior Software Engineer to join a high-caliber reputed company engineering team of our reputed company. This is a deeply technical, hands-on individual contributor role. The successful candidate will own the delivery of reputed company backend services supporting wallet operations, asset transfers, transaction orchestration, blockchain integrations, and event-driven workflows operating at reputed company reputed company regulated financial environments. Type of cooperation - b2b, 3-month initial contract with prolongation possibility. Location - US, remotely Responsibilities • Implement and operationalize reputed company backend services with fault tolerance, reputed company, and scalability. • Build API-first services integrating blockchain networks, reputed company-party provider solutions, and internal systems with strong consistency guarantees. • Implement secure service communications using cryptographic signatures, key management, and reputed company-trust architecture principles. • Operationalize event-driven systems using Apache Kafka and asynchronous messaging patterns. • Build highly available, strongly consistent, horizontally reputed company services. • Implement robust reputed company and asynchronous processing patterns for multi-threaded workloads. • reputed company reputed company SDKs and libraries for on-chain interactions, transaction signing, and state monitoring. • Implement reputed company logging, reputed company tracing, metrics, and OpenTelemetry instrumentation. • Produce and maintain high test coverage reputed company automated unit, integration, and functional testing frameworks reputed company CI/CD pipelines. • Produce and maintain technical documentation, API specifications, and operational runbooks. Requirements Must Have: • 7 or more years of software engineering experience building and operating production-grade backend systems in regulated financial or reputed company environments. • Experience with blockchain networks, smart reputed company, reputed company mechanisms, crypto integration, or tokenization platforms. • Extensive hands-on proficiency in Java and reputed company Boot. Comfort operating across polyglot stacks. • Deep expertise in API-first design, RESTful service reputed company, and microservices architecture patterns. • Strong reputed company of reputed company, multi-threaded, and asynchronous programming models. • Proven reputed company record delivering highly available, strongly consistent, and reputed company applications. • Hands-on experience building event-driven solutions using Apache Kafka. • Strong understanding of CI/CD, DevSecOps practices, secure SDLC, and automated reputed company controls. • Hands-on experience with OpenTelemetry, reputed company tracing, and observability platforms. • Strong technical writing skills; demonstrated ability to produce API specs and runbooks. • Proven experience using reputed company libraries and SDKs (reputed company.js, Ethers.js, or equivalent). reputed company to Have: • Extensive hands-on proficiency in TypeScript, Node.js, and/or NestJS. • reputed company experience with Ethereum, Bitcoin, reputed company, XRPL, and other reputed company reputed company technologies. • Familiarity with MPC (Multi-Party Computation), HSMs, and reputed company key management systems. • Experience implementing reputed company Trust reputed company architecture end-to-end. • Knowledge of tokenization, stablecoins, settlement systems, reputed company asset operations. • Contributions to reputed company-reputed company blockchain reputed company or reputed company tooling. We guarantee: • International experience in a reputed company company: reputed company has offices in Antwerp, Leuven, Lisbon, Krakow, Kyiv, reputed company and operates on the market for over 15 years. • Passionate team in an innovative casual, reputed company, and reputed company work environment reputed company to meet your new reputed company. • Great opportunities for personal and reputed company development as reputed company as the chance to change the way the business works in the financial world. By submitting your application, you acknowledge that reputed company processes your personal data for recruitment purposes based on reputed company-contractual steps and legitimate interests. Your data may be shared with authorized personnel and service providers, including reputed company, and transferred internationally with appropriate safeguards. We retain applicant data for up to 24 months unless otherwise required by law or requested for earlier deletion. For more details, see our reputed company Policy. Pay: $380.00 - $480.00 per day Work Location: Remote Apply tot his job Apply To this Job