Flex · 20 hours ago
Senior Software Engineer, Risk Engineering
United States
Full-time
Remote
Senior Level
6+ years expFlex is a growth-stage FinTech company based in NYC that aims to revolutionize the rent payment experience. They are seeking a Senior Software Engineer to implement backend systems that support business features, focusing on services and integrations that enhance user and partner experiences.
AppsBillingFinancial ServicesFinTechSoftware
Responsibilities
Responsible for implementing the various backend systems that support all business features
Part of the backend engineer team, responsible for the services and integrations that power our products, such as Payment, Billing, Identity, partner integration, etc
Designing, developing, testing, and scaling systems needed to deliver great user and partner experiences
Work closely with product, design, and engineering peers to solve users' most pressing problems around rent payment
Roll out changes to customers in an agile manner with a delivery cadence that favors small, frequent iterations
Comfortable leading scoping, design, and implementation for APIs built and can drive production rollouts to completion with minimum oversight
Qualification
Required
Minimum of 6 years experience in software engineering
Minimum of 4 years experience with Java
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
Experience designing, building, and maintaining data pipelines
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 AWS (EKS, Aurora RDS, Elasticache, DynamoDB) and containerization tools
Preferred
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
Competitive medical, dental, and vision available from Day 1
Company equity
401(k) plan with company match (our company match kicks off at the beginning of 2026)
Unlimited paid time off + 13 company paid holidays
Parental leave
Flex Cares Program
Free Flex subscription
Competitive compensation + company equity
Unlimited PTO
Company
Flex
Flex enables people to pay rent bills on a schedule that fits their personal finances.
201-500 employees
H1B Sponsorship
Flex has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (1)
Funding
Current Stage
Growth StageTotal Funding
unknown2025-03-31Series A
2019-11-01Seed
2019-07-24Pre Seed
Leadership Team
Shragie Lichtenstein
Co-Founder & CEO
Michael Jannain
Staff Software Engineer
Recent News
Flexible Finance, Inc.
2025-10-14
Flexible Finance, Inc.
2025-10-09
2023-12-15
Company data provided by crunchbase