
Job Overview
Location
United States (Remote)
Job Type
Full-time
Category
Software Engineering
Date Posted
March 25, 2026
Full Job Description
đź“‹ Description
- • OnePay is revolutionizing the consumer fintech landscape by addressing the fundamental flaws in the current financial system, characterized by high fees, low interest rates, and limited avenues for wealth growth. We are building an all-in-one financial services platform that seamlessly integrates banking, high-yield savings, credit cards, point-of-sale lending, investing, and cryptocurrency. Furthermore, we are extending our reach by partnering with employers, HCM providers, and gig platforms to embed financial services directly to millions of employees and frontline workers. Our mission is to make money better for everyone, and we are doing so with unprecedented speed and innovation. Backed by industry giants like Walmart and Ribbit Capital, we possess the scale, distribution, and vision to create a truly category-defining company in the fintech space. Our culture is defined by a relentless drive for progress, attracting individuals who are ready to run, possess an insatiable hunger and urgency, demonstrate exceptional skill with low ego, and thrive in a dynamic, fast-paced environment.
- • As an Agentic Platform Engineer at OnePay, you will be at the forefront of building the foundational platform services and sophisticated developer frameworks that underpin our large-scale, distributed systems. Your work will be instrumental in enabling the next generation of intelligent, agent-driven applications that will power our innovative financial products. This role demands a proactive and builder-oriented mindset, where you will be responsible for the end-to-end lifecycle of critical platform components. You will be designing, developing, and operating core services that are essential for the stability, scalability, and performance of OnePay’s entire product ecosystem. This includes architecting and managing robust Kafka-based event streaming systems, which are vital for real-time data processing and ensuring the reliability of our mission-critical financial workflows. Your contributions will directly impact the velocity, reliability, and observability of all engineering teams by developing cutting-edge internal developer tooling and shared infrastructure. A significant aspect of your role will involve building and continuously evolving frameworks that facilitate the creation and orchestration of agentic applications, thereby empowering intelligent, automated workflows across our diverse product offerings. Collaboration will be key, as you will partner closely with our engineering, data, and AI teams to tackle complex distributed computing challenges within a secure, cloud-native AWS environment. This is an opportunity to shape the future of fintech infrastructure and contribute to a product that is making a tangible difference in the lives of millions.
- • The core of your daily responsibilities will revolve around the design, implementation, and operation of platform-oriented services that are critical for supporting high-scale distributed systems across OnePay’s extensive product ecosystem. You will be deeply involved in architecting, building, and meticulously managing our Kafka-based event streaming systems, ensuring they efficiently power real-time data flows and support our mission-critical financial workflows with unwavering reliability. A significant portion of your effort will be dedicated to developing and refining internal developer tooling and shared infrastructure, with the explicit goal of enhancing the velocity, reliability, and observability for all our engineering teams. You will also be instrumental in building and evolving sophisticated frameworks designed to support the construction and seamless orchestration of agentic applications, thereby enabling intelligent, automated workflows that span across our various product lines. Furthermore, you will engage in close collaboration with our dedicated engineering, data, and AI teams, working together to solve intricate distributed computing challenges within our secure, cloud-native AWS environment. This collaborative approach ensures that we are leveraging the collective expertise to overcome complex technical hurdles and deliver robust solutions.
- • Within this role, you will have the unique opportunity to gain deep expertise in building and operating cutting-edge platform services for a rapidly growing fintech company. You will become proficient in designing and scaling complex event-driven architectures using Kafka, a critical skill in modern distributed systems. You will also develop a strong understanding of cloud-native infrastructure within AWS, including best practices for security, scalability, and cost-efficiency. The experience gained in building developer platforms and frameworks will equip you with the knowledge to empower engineering teams and significantly improve their productivity and the quality of their output. This role offers a chance to contribute to a category-defining product, working alongside exceptionally talented individuals in a fast-paced, mission-driven environment. You will be at the forefront of innovation in agentic applications and distributed computing, with the potential to significantly impact the trajectory of the company and the broader fintech industry. Your work will directly contribute to making financial services more accessible, efficient, and intelligent for millions of users.
Skills & Technologies
TypeScript
React
Node.js
AWS
Kubernetes
Remote
About OneApp Technologies Inc.
Mobile-first platform that consolidates payments, loyalty, and merchant services into a single SDK for businesses. Offers card-linked offers, cashback programs, and real-time analytics to increase customer retention. Focuses on financial institutions, retailers, and fintechs seeking to unify consumer spending experiences across physical and digital channels.
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