Senior Software Engineer, Java

🕒 July 19

🇵🇹 Portugal – Remote

⏳ Contract/Temporary

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 11%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

Apply Now

Find Similar Remote Jobs

Set Up Email Alert For New Jobs

📊 Check your resume score for this job

Improve your chances of getting an interview by checking your resume score before you apply.

Upload Resume

IntellectEU

WebsiteLinkedInAll Job Openings

201 - 500 employees

💼 Consulting

📦 Logistics

📣 Marketing

💰 Venture Round on 2017-06

Consulting • Logistics • Marketing

IntellectEU is a global technology company that specializes in digital finance innovation and payment modernization. With over 18 years of experience, it provides enterprise-scale solutions in cross-border payments, market infrastructure, and sustainable finance. IntellectEU is known for leveraging blockchain, smart contracts, and digital assets technologies to innovate and provide seamless connectivity between traditional and modern financial systems. It is recognized for its expertise in the financial technology space, working closely with enterprises to create new digital market infrastructure and integrate on- and off-chain payment solutions.

📋 Description

• Implement and operationalize core backend services with fault tolerance, security, and scalability. • Build API-first services integrating blockchain networks, third-party provider solutions, and internal systems with strong consistency guarantees. • Implement secure service communications using cryptographic signatures, key management, and zero-trust architecture principles. • Operationalize event-driven systems using Apache Kafka and asynchronous messaging patterns. • Build highly available, strongly consistent, horizontally scalable services. • Implement robust concurrent and asynchronous processing patterns for multi-threaded workloads. • Integrate Web3 SDKs and libraries for on-chain interactions, transaction signing, and state monitoring. • Implement structured logging, distributed tracing, metrics, and OpenTelemetry instrumentation. • Produce and maintain high test coverage via automated unit, integration, and functional testing frameworks within CI/CD pipelines. • Produce and maintain technical documentation, API specifications, and operational runbooks.

🎯 Requirements

• 7 or more years of software engineering experience building and operating production-grade backend systems in regulated financial or enterprise environments. • Extensive hands-on proficiency in Java and Spring Boot. • Comfort operating across polyglot stacks. • Deep expertise in API-first design, RESTful service contracts, and microservices architecture patterns. • Strong command of concurrent, multi-threaded, and asynchronous programming models. • Proven track record delivering highly available, strongly consistent, and distributed applications. • Hands-on experience building event-driven solutions using Apache Kafka. • Solid understanding of messaging patterns including pub/sub, event sourcing and saga/choreography orchestration. • Strong understanding of CI/CD, DevSecOps practices, secure SDLC, and automated security controls. • Hands-on experience with OpenTelemetry, distributed tracing, and observability platforms. • Strong technical writing skills; demonstrated ability to produce API specs and runbooks. • Nice to Have: Extensive hands-on proficiency in TypeScript, Node.js, and/or NestJS. • Direct experience with Ethereum, Bitcoin, Solana, XRPL, and other distributed ledger technologies. • Familiarity with MPC (Multi-Party Computation), HSMs, and enterprise key management systems. • Experience implementing Zero Trust security architecture end-to-end. • Knowledge of tokenization, stablecoins, settlement systems, and digital asset operations. • Contributions to open-source blockchain projects or Web3 tooling. • Experience with AI-assisted development workflows and LLM-powered tooling.

🏖️ Benefits

• International experience in a stable company: the company has offices in Antwerp, Leuven, Lisbon, Krakow, Kyiv, New York and operates on the market for over 15 years. • Passionate team in an innovative casual, positive, and open work environment ready to meet your new ideas. • Great opportunities for personal and professional development as well as the chance to change the way the business works in the financial world. • Work where you're most productive: remote, in-office, or hybrid options available.