Senior Solana Integration Engineer & Architect specializing in production-grade integrations bridging enterprise backends to Solana rails. Available immediately for 3–6 month remote contracts (100% US EST overlap).
⚡ Core Engineering Highlights:
• Enterprise Protocol Rails: Architected pure-Java Solana wire serializers (compact-u16 varints, canonical account classification) and Ed25519 signing for Spring Boot microservices, eliminating third-party SDK dependencies.
• Compliance Gatekeeping: Fail-closed KYC/AML gatekeepers and append-only PostgreSQL audit trails preventing unverified wallets from hitting on-chain settlement.
• Web3 Frontends & Mobile: TypeScript / Angular 18+ / React Native dApps, @solana/web3.js, wallet adapters (Phantom/Solflare), and native Solana Mobile Stack (SMS/MWA).
🛠️ Technical Toolkit:
• Backend & Web3: Java 21, Spring Boot 3.5, Hibernate/JPA, PostgreSQL, Docker, Solana Devnet/Mainnet RPC, Pure-Java Serialization, Ed25519, Dynamic Rent Exemption.
• Frontend & Mobile: TypeScript, Angular 18+, React Native, Native Android (Kotlin/Java), SMS, MWA, Tailwind CSS.
• Delivery & Practices: Certified Professional Scrum Master (PSM I), TDD, CI/CD, Agile Sprint Leadership.
🚀 Featured Open-Source Proof-of-Work:
• solana-rwa-enterprise-bridge: Enterprise Spring Boot bridge to Solana RPC with atomic 2-instruction SPL token minting & compliance gating (107 passing backend tests).
• solana-staker-mobile: Mobile-first staking dApp via Solana Mobile Stack & MWA.
🎯 Target Roles: Senior Solana Integration Engineer / Web3 Solutions Architect (3–6 Mo Contracts | US EST Remote)
💼 LinkedIn: linkedin.com/in/msantagiulianab
🐙 GitHub: github.com/msantagiulianab
✈️ Telegram: @msantagiulianab
✉️ Email: [email protected]
Experience: 5 years
Yearly salary: $200,000
Hourly rate: $100
Nationality: 🇮🇹 Italy
Residency: 🇵🇦 Panama
Experience
Senior Solana Integration Engineer & Architect
Independent Contractor 2026 - 2026
Providing high-impact technical consulting and system architecture design for Web3 startups, fintechs, and enterprise teams integrating with the Solana blockchain. Engineering robust backend integration rails in Java 21 / Spring Boot, featuring zero-dependency binary wire transaction serializers, dynamic rent exemption calculation, and Ed25519 multi-signature signing. Architecting fail-closed compliance gatekeepers, automated KYC/AML verification rules, and immutable PostgreSQL audit trails to securely bridge off-chain enterprise infrastructure to Solana on-chain settlement. Developing responsive Web3 frontends (TypeScript, Angular 18+) and mobile dApps (Solana Mobile Stack / Mobile Wallet Adapter, React Native, native Android) with self-custody wallet signing (Phantom, Solflare). Scoping and executing 3–6 month consulting contracts with Agile engineering pods, focusing on rapid milestone delivery, test-driven development (TDD), and 100% synchronization with US Eastern Time (EST) stakeholders.
Systems Developer
MCP Plc 2024 - 2026
Developed and maintained core, mission-critical maritime logistics systems (Destin8 and Declar8) responsible for nationwide port community container handling and supply chain logistics. Architected enterprise full-stack solutions utilizing Java (Spring Boot) and TypeScript (Angular) to deliver highly responsive, modern web interfaces for high-throughput operational data. Maintained and modernized legacy high-availability infrastructure using Java J2EE, Oracle WebLogic, JSP, and JSF to guarantee optimal uptime and strict compliance standards. Collaborated closely with cross-functional technical teams to map complex data architectures, directly translating backend logic to clean, modular frontend components.
Platform Lead
Apadmi Ltd 2022 - 2024
Served as Platform Lead within a premier mobile consultancy, executing development sprints across high-impact mobile solutions for diverse client portfolios. Operated within a highly mature, rigorous Agile/Scrum environment, proactively enforcing industry best practices to accelerate feature deployment and product delivery pipelines. Earned the Professional Scrum Master I (PSM 1) certification to actively optimize team dynamics, eliminate technical blockages, and streamline communication between stakeholders and engineering teams. Collaborated on mobile architecture design, ensuring cross-platform scalability, clean code standards, and seamless API integrations across multiple concurrent client apps.
Mobile Software Engineer
Darktrace 2021 - 2021
Engineered and enhanced features for Darktrace’s native enterprise Android application built entirely in Java. Collaborated closely with an agile engineering team to lead application modernization initiatives, refactoring legacy codebases to improve memory management, performance, and overall stability. Executed extensive UI/UX restyling and modernization, upgrading the mobile interface to align with modern responsive design philosophies and improve enterprise user engagement. Optimized native application performance, tracking down bottlenecks in network calls and local storage to deliver an optimal, low-latency mobile client experience.
Sabbatical for transition into software development
Career transition 2019 - 2021
Dedicated a 20-month period to intensive technical upskilling and a strategic career pivot from Mechanical Engineering into Enterprise Software Development. Built a deep foundational mastery of native Android architecture, object-oriented programming concepts, Java, and core data structures through self-directed engineering projects. Designed, developed, and deployed personal mobile applications, laying the technical groundwork required to transition immediately into a high-impact engineering role at Darktrace.
Project Manager - contractor
Princes Group Limited 2018 - 2019
Led end-to-end cross-functional project delivery for a high-priority, €3M+ complex infrastructure project spanning teams in the UK and Italy. Served as the central point of contact for external technical contractors and global supply chain vendors to ensure alignment with fast-paced delivery milestones. Modernized team workflows and communication structures by implementing collaborative tools (Asana, MS Project), significantly lowering communication overhead. Partnered directly with cross-functional logistics and internal operations teams to map out and streamline complex system processes.
Project Manager
NOTE Haddenham Ltd 2018 - 2018
Directed New Product Innovation (NPI) technical projects from initial concept through to successful production deployment, maintaining tight control over life-cycle execution. Managed cross-border client relationships, engineering teams, and overseas manufacturing suppliers to keep technical projects aligned with scope and budget targets (£100k–£200k). Mentored and upskilled junior engineering staff on technical delivery frameworks, risk management, and client communication practices.
Project Engineer
NOTE Haddenham Ltd 2017 - 2018
Coordinated technical project workflows, tracking engineering dependencies and bridging the communication gap between design teams and production lines. Managed technical documentation and resource allocation to ensure milestones were consistently hit on schedule.
Project Engineer
Xaar Plc 2016 - 2017
Managed the successful delivery and validation of specialized technical hardware operating under highly regulated, high-precision environment requirements. Collaborated directly with process and systems engineers to isolate architectural bottlenecks, map out system requirements, and resolve technical issues. Executed rigorous quality assurance testing protocols, orchestrating both Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) with international suppliers.
Mechanical Design Engineer
Xaar Plc 2014 - 2016
Owned the detailed technical design, structural assembly, and cross-functional systems integration of hardware and electronics modules. Contributed to deep R&D initiatives on a cutting-edge hardware platform leveraging advanced thin-film piezoelectric technology. Collaborated daily within multidisciplinary engineering pods (software, electronics, and product teams) to bring products from prototype to mass production.
Skills
android
java
javascript
kotlin
project-manager
react-native
scrum
typescript
solana