Jobs at OnePay

Designs and owns shared test automation frameworks and scalable test execution infrastructure across web, mobile, and backend services. Builds tooling for test environments, test data, parallel execution, flaky-test detection, and infrastructure monitoring. Partners with engineering teams to improve test coverage and quality practices, reduces feedback-loop friction, and documents testing best practices. The role requires strong automation architecture, cloud-native infrastructure, cross-stack testing, and collaborative influence.

Build and operate secure, scalable backend services for OnePay’s co-branded credit card product. Design APIs and event-driven systems, integrate partner platforms, ensure regulatory and security compliance, and own reliability for real-time credit transactions. Collaborate with risk, compliance, and platform teams, make architecture decisions, mentor engineers, and improve code quality, testing, and operational practices.

Build and scale full-stack financial product experiences for OnePay’s employer benefits platform. Lead technical design, establish architectural and coding standards, optimize systems for reliability, security, performance, and scalability, and make technical decisions balancing rapid delivery with sustainable solutions. Collaborate with product, design, and operations to deliver features across web, iOS, and Android using distributed systems, APIs, and modern frontend technologies.

Own OnePay’s consumer communications and new media program by building relationships with reporters, podcasters, Substackers, live show hosts, and creators. Pitch and secure media placements, manage inbound opportunities, develop partnerships, prepare messaging, monitor coverage and sentiment, and collaborate with legal and compliance in a regulated fintech environment. The role also represents OnePay in interviews and appearances.

Supports Product Managers with user and market research, requirements and user stories, feature execution tracking, stakeholder collaboration, and launch readiness. The intern works cross-functionally with Engineering, Design, and Analytics while developing product, technical, and professional skills through mentorship and workshops.

Support marketing campaigns, content production, social listening, and go-to-market initiatives. Research audiences and trends, develop campaign materials, coordinate deliverables, and help measure results while collaborating with cross-functional teams. The eight-week internship includes mentorship, professional development workshops, and networking opportunities. Candidates must be current bachelor’s students graduating in Fall 2027 or Spring 2028, available full-time in the New York City office, and authorized to work without employer-sponsored visa support.

Supports the Legal & Compliance team with contract drafting and review, regulatory research, policy development, privacy assessments, AI governance, and marketing compliance reviews. Collaborates with Product, Risk, Privacy, Marketing, and business teams while gaining exposure to financial services regulation, data privacy, artificial intelligence, and advertising law. The role includes mentorship, professional development, and an eight-week full-time program in New York City.

Supports financial planning, analysis, and operations initiatives through financial modeling, reporting, forecasting, month-end close, variance analysis, budget reviews, and investor reporting. Works with FP&A, Accounting, and Treasury teams while evaluating business decisions and analyzing financial data. The internship also includes professional development, mentorship, and cross-functional collaboration in a fast-paced fintech environment.

Design Intern supporting product discovery, competitive analysis, interaction design, prototyping, and design systems across fintech product initiatives. Collaborates with Design, Product, Engineering, and Analytics teams, participates in critiques and reviews, and receives mentorship and professional development. Requires full-time availability for an eight-week program in OnePay’s New York City office, three to four days per week.

Supports the Commercial team with partnership research, market and product diligence, strategy materials, outreach, and deal execution. Collaborates with Partnerships, Legal, and Product teams while participating in diligence calls, redline reviews, workshops, and professional development activities.

Research and prototype transformer-based and graph-based foundation models using customer, transaction, and merchant data. The intern will design and train models, run rigorous experiments, evaluate results, and develop working prototypes. Responsibilities include collaborating with Product, Engineering, Analytics, and Applied Science teams to improve customer experience, operational efficiency, and business outcomes.

Software Engineering Interns will collaborate with engineering and cross-functional teams on real-world projects, contribute to key engineering initiatives, build technical and professional skills, and present their work at the end of the program. Interns receive mentorship, workshops, and career development support while working full-time in the New York City office for eight weeks.

Lead a hands-on site reliability engineering team while writing production code and building automation, observability, incident-response tooling, and safe deployment practices. Own service reliability standards, alerting, dashboards, runbooks, rollback safety, incident command, remediation, and sustainable on-call coverage. Partner with engineering teams to improve reliability across high-availability financial services supporting millions of customers.

Conduct risk-based compliance testing across fintech products, processes, communications, servicing, complaints, and third parties. Assess control effectiveness, analyze data, document findings, track remediation, and report risks to senior stakeholders. Apply U.S. consumer-finance regulations, contribute to compliance planning, monitor regulatory developments, and develop scalable testing methods, dashboards, and automation. Collaborate cross-functionally with Compliance, Product, Operations, Risk, Legal, Data, Engineering, and Marketing teams.

Builds production-ready design and interface components in code, bridging design and engineering across React Native, React, and mobile and web platforms. Uses AI coding tools such as Cursor, Claude Code, and v0 at high production velocity. Defines design-to-code workflows, design tokens, component architecture, and improved handoff practices while collaborating closely with designers and engineers in a fast-moving environment.

Leads treasury analytics and strategy by building cash forecasting, balance sheet, capital, ALM, liquidity, interest rate, FX risk, stress testing, and scenario models. Develops treasury data infrastructure, reporting, controls, reconciliations, and capital adequacy processes. Partners with finance, accounting, FP&A, operations, legal, risk, and compliance teams to improve cash utilization, funding strategies, regulatory compliance, and long-term capital efficiency. Incorporates AI and scalable data tools into treasury operations.

As a Forward Deployed Engineer, you will develop AI agents and automation workflows, collaborate with teams, and ensure secure, reliable solutions integrating with various systems.

Build and maintain resilient backend services and APIs for fraud detection, identity verification, and transaction monitoring. Integrate third-party risk/compliance platforms, partner with product and engineering teams, contribute to architecture decisions, and produce documentation to ensure secure, reliable systems at scale.

Design and productionize machine learning, deep learning, LLM, personalization, recommendation, search, and retrieval systems. Collaborate with product, engineering, and analytics teams to deploy AI solutions that improve customer experiences, business growth, and operational efficiency. The role requires driving projects from ideation through deployment and delivering measurable business impact in a fast-moving fintech environment.

Develops partnership-led product expansion strategy, evaluates build-versus-partner opportunities, conducts market and partner analysis, presents recommendations to leadership, represents OnePay externally, and leads partner selection and commercial contract negotiations through execution.