Senior Software Engineer, Fullstack

Summary

Join Flex, a NYC-based FinTech company revolutionizing rent payments, as a Software Engineer. You will be part of the backend engineering team, designing, developing, testing, and scaling systems for payment, billing, identity, and partner integrations. Collaborate with product, design, and engineering teams to solve user problems, delivering changes through agile methodologies. Lead scoping, design, and implementation of APIs, driving production rollouts. This role requires a minimum of 4 years of Java experience and a passion for building robust, scalable systems. Flex offers a dynamic and challenging environment with opportunities for growth.

Requirements

• 4+ years of professional software development experience
• 3+ years of hands-on experience with Java
• 3+ years of experience with React or React Native
• 3+ years of experience with TypeScript
• Having experience building high-quality mobile and web UIs to specifications is a must to have
• Ability to work on a globally-distributed team with a high degree of ownership
• Experience working with technical and non-technical stakeholders, successfully aligning and setting expectations on scope and delivery
• Ability to grow in a fast-paced and dynamic environment that will challenge you to always bring your best
• Experience building robust, fault-tolerant systems with multiple external dependencies
• Proficient in Java frameworks and tools used at Flex, including Spring (core/web/boot), Gradle, JUnit, and JVM (memory/performance tuning, GC)
• Experience with Service-Oriented Architecture, REST APIs, Message Queues, and scalable architectures
• Experience with architectures and tools in React Native and React ecosystems (Hooks, Components, Context, Redux)
• Experience with AWS (EKS, Aurora RDS, Elasticache, DynamoDB) and containerization tools

Responsibilities

• Implement the various backend systems that support all business features
• Be part of the backend engineer team, responsible for the services and integrations that power our products, such as Payment, Billing, Identity, partner integration, etc
• Design, develop, test, and scale systems needed to deliver great user and partner experiences
• Work closely with your product, design and engineering peers to solve our users' most pressing problems around rent payment
• Roll out changes to our customers in an agile manner with a delivery cadence that favors small, frequent iterations
• Lead scoping, design and implementation for APIs they build and can drive their production rollouts to completion with minimum oversight

Preferred Qualifications

• Proficient in CI/CD systems (preferably GitHub Actions), git, and automation
• Skilled in observability and monitoring tools, such as DataDog, to ensure high availability
• Experienced with big data platforms and tooling, including Snowflake
• Proficient in Infrastructure as Code, using tools like CDK and Terraform
• Skilled at elevating team standards through best practices, and mentoring junior engineers
• Excellent written and verbal communicator, with experience in cross-functional collaboration

Benefits

• 100% company-paid medical, dental, and vision
• 401(k) + company equity
• Unlimited paid time off + 13 company paid holidays
• Parental leave
• Flex Cares Program: Non-profit company match + pet adoption coverage
• Free Flex subscription
• Competitive Pay
• Company Equity
• Unlimited PTO