Top Tier Investment bank requires an experienced hands-on Java developer and technical architect with deep expertise in real-time third-party payments, high-throughput zero-downtime systems, and highly available, global-scale internet-facing APIs. This role is central to scaling the TFX technology platform for major retail clients and requires a strong individual contributor mindset: someone who can define architecture, make sound technical decisions, and remain close to implementation through hands-on development, code-level guidance, and practical delivery leadership. In the Technology division, we leverage innovation to build the connections and capabilities that power our Firm, enabling our clients and colleagues to redefine markets and shape the future of our communities. This is a Principal Software Engineering position at Vice President level, which is part of the job family responsible for developing and maintaining software solutions that support business needs. What You''ll Do In The Role Act as a senior individual contributor who combines hands-on Java development with architectural leadership, remaining close to implementation and setting the technical standard through design, code-level guidance, and practical problem solving.Design, build, and evolve highly available, high-throughput, zero-downtime systems and internet-facing APIs that can scale securely for large retail and external client volumes.Lead architectural decisions across API design, domain ..... full job details .....