Backend Software Engineer, CoreApp
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Requirements
• 5+ years of professional experience building and scaling backend systems in consumer technology or fintech environments • Experience designing and operating distributed systems, APIs, and data flows that support user facing applications • Familiarity with message brokers and event driven systems, as well as caching and performance optimization strategies • Demonstrated ability to lead technical execution, mentor other engineers, and deliver with a high bar for quality • Drive and proactivity – everyone here is a builder and executor. • We use the fp-ts library for functional programming with Node/TypeScript running on top of Kubernetes and AWS. We believe great engineers can learn any stack, so you do not need experience with these specific tools, but you’ll ramp up more quickly if you are familiar with functional programming concepts.
Responsibilities
• Develop and maintain scalable backend systems for CoreApp's services to ensure high availability and performance standards are met. • Design, implement, test, deploy, monitor, troubleshoot, optimize, document, refactor, integrate with existing applications/systems as needed using industry best practices in software development methodologies (e.g., Agile). • Collaborate closely with the frontend team to understand user requirements and ensure seamless integration of backend services into web or mobile apps for CoreApp's products such as OnePay, PayPal, Venmo, Zelle, etc. • Implement security measures in accordance with industry best practices (e.g., OWASP) using secure coding standards to protect sensitive user data and prevent unauthorized access/data breaches at CoreApp's systems or applications that handle financial transactions for customers of OnePay services such as PayPal, Venmo, Zelle, etc. • Monitor system performance metrics (e.g., response time, throughput) using tools like New Relic and Datadog to identify bottlenecks/performance issues in CoreApp's backend systems that handle financial transactions for customers of OnePay services such as PayPal, Venmo, Zelle, etc.; troubleshoot & resolve identified performance problems promptly. • Optimize system architecture using tools like Docker and Kubernetes to improve scalability; implement caching mechanisms (e.g., Redis) where appropriate in CoreApp's backend systems that handle financial transactions for customers of OnePay services such as PayPal, Venmo, Zelle, etc.; ensure efficient resource utilization while maintaining high availability/performance standards at all times during peak transaction periods or when handling large volumes of concurrent user requests. • Document system architecture & codebase using tools like Sphinx; create comprehensive technical documentation for CoreApp's backend systems that handle financial transactions, including API endpoints and database schemas used by OnePay services such as PayPal, Venmo, Zelle etc.; ensure all developers working on these projects have access to up-to-date & accurate system documentation. • Refactor legacy code/system components using best practices in software development methodologies (e.g., Agile) where necessary; improve maintainability and scalability of CoreApp's backend systems that handle financial transactions for customers of OnePay services such as PayPal, Venmo, Zelle etc.; ensure all changes made do not impact system performance/availability negatively during peak transaction periods or when handling large volumes of concurrent user requests. • Integrate with existing applications/systems using industry best practices in software development methodologies (e.g., Agile); work closely with frontend teams to understand their requirements & ensure seamless integration between CoreApp's backend systems and web/mobile apps for OnePay services
Benefits
• $170K – $210K • Offers Equity • Upload your resume here to autofill key application fields. • Drop your resume here! • Parsing your resume. Autofilling key fields... • Please note: to ensure that candidates select the most relevant jobs for their skills, we have set up limits to the number of times candidates can apply. The following limits apply to all roles at One: • Candidates may only apply once (1) for the same role over a span of three (3) months • Candidates are limited to two (2) separate applications at a time, to focus on roles that are the best fit for them • or drag and drop here • Decline to self-identify • Hispanic or Latino - A person of Cuban, Mexican, Puerto Rican, South or Central American, or other Spanish culture or origin regardless of race. • Hispanic or Latino • White (Not Hispanic or Latino) - A person having origins in any of the original peoples of Europe, the Middle East, or North Africa. • White • Black or African American (Not Hispanic or Latino) - A person having origins in any of the black racial groups of Africa. • Black or African American • Native Hawaiian or Other Pacific Islander (Not Hispanic or Latino) - A person having origins in any of the peoples of Hawaii, Guam, Samoa, or other Pacific Islands. • Native Hawaiian or Other Pacific Islander • Asian (Not Hispanic or Latino) - A person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian Subcontinent, including, for example, Cambodia, China, India, Japan, Korea, Malaysia, Pakistan, the Philippine Islands, Thailand, and Vietnam. • Asian • American Indian or Alaska Native (Not Hispanic or Latino) - A person having origins in any of the original peoples of North and South America (including Central America), and who maintain tribal affiliation or community attachment. • American Indian or Alaska Native • Two or More Races (Not Hispanic or Latino) - All persons who identify with more than one of the above five races. • Two or More Races • Hispanic or Latino • White (Not Hispanic or Latino) • Black or African American (Not Hispanic or Latino) • Native Hawaiian or Other Pacific Islander (Not Hispanic or Latino) • Asian (Not Hispanic or Latino) • American Indian or Alaska Native (Not Hispanic or Latino) • Two or More Races (Not Hispanic or Latino) • I identify as one or more of the classifications of protected veteran listed above • I am not a protected veteran