Senior Fullstack Developer

Location: Central Work Hours: Monday - Friday, 9am to 6pm Responsibilties: • Design, develop, and maintain scalable full stack applications with a focus on performance, reliability, and security in a financial services environment. • Collaborate with enterprise architects and business stakeholders to define system architecture, integration patterns, API specifications, and data flow designs. • Own end-to-end delivery across the full SDLC: requirements analysis, technical design, development, code review, testing, deployment, and production support. • Build and maintain Restful Web APIs, backend services, and responsive frontend interfaces to support large-scale internal platforms and portals. • Integrate with third-party platforms and internal enterprise systems using established patterns (OAuth/OpenID, REST, event-driven architecture). • Implement AI-assisted or data-driven features (e.g. smart tagging, auto-summarisation, search enrichment) to improve platform intelligence and usability. • Champion code quality through code reviews, performance optimisation, security best practices, and technical debt management. • Contribute to sprint planning, task estimation, and delivery governance in an Agile/Scrum environment. • Mentor junior team members and provide technical guidance to ensure consistent standards across the team. • Produce clear solution documentation including architecture diagrams, sequence diagrams, and API specifications. Job Requirements • 10+ years software engineering experience, with at least 5+ years in enterprise-grade fullstack development within regulated environments (e.g., banking, financial services, investment platforms). • Strong backend expertise in C# and the .NET ecosystem (.NET Framework, .NET Core, .NET 8), including ASP.NET MVC, Web API, Entity Framework Core, and solid relational database experience with Microsoft SQL Server (mandatory) plus Redis for caching/session management. • Advanced frontend capability in React with TypeScript, including state management using Redux or Redux Saga, and building scalable enterprise UIs using component libraries such as Ant Design, Kendo UI, or Telerik with strong HTML/CSS/JavaScript fundamentals. • Hands-on DevOps and cloud experience covering Docker containerisation, CI/CD pipelines (Jenkins or GitHub Actions), Git-based source control, Agile practices (JIRA/Confluence), and AWS deployment services such as EC2 and S3. • Proven ability to work in regulated enterprise environments, collaborating directly with enterprise architects and senior stakeholders to design and deliver scalable, production-grade technical solutions. Preferred skills include Kubernetes/OpenShift, AI/ML feature integration, blockchain/crypto domain exposure, technical leadership experience, Python, and legacy system modernisation initiatives. We regret to inform that only shortlisted candidates will be notified. By sending us your personal data and curriculum vitae (CV), you are deemed to consent to PERSOL SINGAPORE PTE LTD and its affiliates to collect, use and disclose your personal data for the purposes set out in the Privacy Policy available at . You acknowledge that you have read, understood, and agree with the Privacy Policy. This is in partnership with Employment and Employability Institute Pte Ltd (“e2i”). e2i is the empowering network for workers and employers seeking employment and employability solutions. e2i serves as a bridge between workers and employers, connecting with workers to offer job security through job-matching, career guidance and skills upgrading services, and partnering employers to address their manpower needs through recruitment, training and job redesign solutions. e2i is a tripartite initiative of the National Trades Union Congress set up to support nation-wide manpower and skills upgrading initiatives. By applying for this role, you consent to e2i’s PDPA. PERSOL Singapore Pte Ltd • RCB No. 200007268E • EA License No. 01C4394 • REG Number. R23117757 (Loh Yi Yuan)