Senior Software Engineer

💼 Hiring: Senior Software Engineer - IntellectEU 📍 Remote - United States | 🕐 Posted 12 hours ago - October 7, 2026 | 💰 Not provided | 🧑‍💻 Individual contributor | 🔗 Java / Spring Boot / Blockchain / Kafka IntellectEU is looking for a Senior Software Engineer to join a high-caliber Web3 engineering team. This is a deeply technical, hands-on individual contributor role focused on backend services for wallet operations, asset transfers, transaction orchestration, and blockchain integrations in regulated financial environments. 📋 Responsibilities include: - Own core backend services for wallet operations, asset transfers, transaction orchestration, and blockchain integrations at scale - Build API-first services integrating blockchain networks, third-party providers, and internal systems - Implement secure communication with cryptographic signatures, key management, and zero-trust principles - Operationalize Apache Kafka event-driven systems and highly available, concurrent services - Integrate Web3 SDKs for on-chain interactions, transaction signing, and state monitoring - Add OpenTelemetry observability and maintain tests, API specs, and operational runbooks 🔑 Requirements set by the company: - 7+ years building and operating production-grade backend systems - Extensive hands-on Java and Spring Boot expertise - Experience with blockchain networks, smart contracts, crypto integrations, or tokenization - Strong distributed systems, microservices, and concurrent programming skills - Hands-on Apache Kafka, Web3 SDKs, secure development, and observability experience 🛠 Nice-to-have: - TypeScript, Node.js, or NestJS - Digital asset operations or enterprise key management (MPC, HSM) - Ethereum, Bitcoin, Solana, XRPL, or other ledger experience - Tokenization, stablecoins, settlement systems, or open-source Web3 work 📩 To apply: Apply: https://lnkd.in/eBSsUXNC. Questions: DM Joana F. on LinkedIn: https://www.linkedin.com/in/joanaazevedodefreitas 🔗 Original post: https://www.linkedin.com/posts/joanaazevedodefreitas_hiring-java-springboot-ugcPost-7513680413098131456-KWGI/ 📌 New here? Subscribe and mute notifications to avoid noise. 🔎 Search by role or skill, or check the pinned messages for a short vacancy list. ⚠️ DYOR! I do not verify every job. Requests to download and run files or make a payment are major scam warning signs. 🚩 ❗️ I am not hiring. I only share fresh Web3 jobs posted by others. #NFA #DYOR 🌎 All my other social media! Subscribe!👇 💡 Intern/Junior Web3/Crypto/Blockchain Roles DAILY 📱 Allweb3jobs on Twitter/X 📱 Allweb3jobs on LinkedIn 📱 Coinmarketcap token analysis 🪙 Binance token analysis 💬 Want to promote something or just ask a question? Feel free to reach out: @crypto_vazima