Javascript Developer - WFH

About the Role: The JavaScript Developer will focus on technical investigation, requirements definition, vendor coordination, and cross-team delivery across multiple concurrent initiatives. The role requires a strong understanding of software engineering, APIs, cloud services, and distributed systems, along with the ability to translate technical findings into clear documentation and actionable requirements. Working across engineering, product, operations, and external partners, you will take ownership of assigned workstreams and help ensure that system behavior, business needs, integration requirements, and implementation decisions remain aligned. The role also offers opportunities to grow and transition as responsibilities evolve.

Key Responsibilities: Investigate vendor APIs, platform behavior, and integration patterns to identify gaps, undocumented constraints, and potential failure scenarios. Create and maintain technical documentation, including sequence diagrams, error-flow mappings, API inventories, requirements specifications, and decision records. Manage the documentation lifecycle for assigned workstreams, updating materials as new findings and requirements emerge. Translate technical investigation findings into actionable requirements for engineering, product, vendor, and operations teams. Maintain traceability between observed system behavior, business needs, documented requirements, and implementation. Define current-state and future-state process flows for assigned payment experiences. Document system interactions, data flows, control points, and exception scenarios. Coordinate with internal teams and external vendors to support technical investigations and integration delivery. Contribute to initiatives involving vendor integrations, platform modernization, and payment experience improvements. Support cross-team coordination to help move concurrent Payments Engineering initiatives forward.

Required Qualifications: Strong software engineering background. Deep understanding of REST APIs, API semantics, and integration patterns. Proficiency in JavaScript or TypeScript, Java, and Python. Experience with cloud services, with AWS preferred. Proficiency with observability tools. Strong understanding of distributed system behavior. Experience with serverless architecture patterns. Ability to investigate technical systems, document findings clearly, and translate them into requirements that different teams can use.

Preferred Qualifications: Experience in financial services, payments, or banking. Familiarity with payment concepts such as ACH, wire transfers, real-time payments, settlement, and returns. Relevant certifications, such as AWS Certified Developer – Associate or AWS Certified Solutions Architect – Associate. Experience working with modern technology stacks rather than traditional banking technology stacks.

Location & Work Arrangement: This role offers a hybrid work arrangement, with the ability to work remotely two days per week. The source does not specify the office location.