Founding Engineer

About Huzzle At Huzzle, we connect exceptional talent with top opportunities at leading companies across the UK, US, Canada, Europe, and Australia. Our clients include fast-growing startups, digital agencies, SaaS companies, and tech-enabled businesses across industries such as MarTech, FinTech, EdTech, and eCommerce. Unlike traditional outsourcing agencies, we place you directly with innovative companies where you become a valued member of the team. Job Summary This is a rare 0→1 opportunity to build a financial platform from the ground up within an established and profitable ecosystem. We are looking for a highly hands-on Founding Fintech Engineer – Banking & Payments who has previously built serious financial infrastructure and now wants significantly more ownership. You will work directly with the founders and alongside an existing technical developer to architect and build a neobank-style platform spanning business onboarding, KYC/KYB, accounts, payments, cards, FX, ledgers, reconciliation, and money movement. This is not a traditional engineering management position. We are looking for a strong individual contributor or technical lead who remains deeply technical, enjoys writing production code, and is comfortable solving difficult problems without an established playbook. As one of the earliest engineers on the financial product, you will have substantial influence over architecture, technology choices, financial domain models, provider integrations, engineering standards, and eventually the team built around the platform. Key Responsibilities Architect and build core financial infrastructure, including accounts, balances, ledgers, KYC/KYB workflows, transaction state machines, and reconciliation systems. Design and implement integrations with regulated banking partners, card issuers, payment providers, and payment rails including ACH, wires, international payments, and FX. Build provider-independent architecture that enables integration with multiple banks and financial infrastructure partners without creating dependency on a single provider. Develop secure, reliable financial APIs and data models capable of supporting complex transaction and money-movement workflows. Build asynchronous systems involving queues, events, retries, idempotency, exception handling, and transaction processing. Develop card issuing and card management integrations alongside multi-currency and FX functionality. Build internal operations, compliance, permissions, limits, and approval tooling. Own systems and features end-to-end, from architecture and database design through implementation, testing, deployment, and production operation. Work directly with the founders to translate business and product requirements into pragmatic technical solutions. Establish engineering standards and technical foundations that can support the future engineering team. Take initiative in ambiguous situations and independently identify solutions to complex…