Senior Software Engineer, Backend FinPlatform

Flex; San Francisco (CA); Hybrid; USD 146,200 - 215,000; Full time

Benefits offered by this job

Medical/dental/vision

Company equity

401(k) match

Unlimited PTO

Parental leave

Relocation assistance

Free Flex subscription

Job summary

Flex is seeking a Senior Software Engineer to build and scale backend systems powering our payments, billing, identity, and partner integrations. You will design, implement, test, and roll out services with a focus on reliability and performance.

Join a globally distributed team and drive API scoping, design, and production deployments with minimal supervision, working in a hybrid environment in San Francisco.

Qualifications

• 6+ years software engineering experience
• 4+ years Java experience
• Love delivering robust, scalable backend services
• Able to work with stakeholders and drive scope/delivery
• Experience with SOA, REST, messaging queues and scalable architectures
• Experience with AWS services and containerization tools

Responsibilities

• Design, build, test, and scale backend services for payments, billing, identity, and integrations
• Own API scoping, design and production rollouts with minimal oversight
• Collaborate with product/design/engineering to ship reliable features in iterative sprints

Skills

Java

Spring

REST APIs

AWS

Gradle

JUnit

CI/CD

Data pipelines

Observability

Acrylic GC tuning

Tools

Terraform

CDK

Kubernetes

Job description

About the role

Flex is looking for a Senior Software Engineer who will be responsible for implementing the various backend systems that support all business features.

In this role, you will 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. You’ll be designing, developing, testing, and scaling systems needed to deliver great user and partner experiences.

You’ll work closely with your product, design and engineering peers to solve our users\' most pressing problems around rent payment. You’ll roll out changes to our customers in an agile manner with a delivery cadence that favors small, frequent iterations. The ideal candidate will be comfortable leading scoping, design and implementation for APIs they build and can drive their production rollouts to completion with minimum oversight.

A minimum of 4 years of experience with Java is required for this position.

Minimum Qualifications

• 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 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.

Compensation

Flex takes a market-based approach to pay, and compensation may vary depending on your primary work location. Work locations are categorized into one of three tiers based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be commensurate with their experience, qualifications, and Flex’s internal leveling guidelines and benchmarks.

Tier 1 (NYC/Bay Area, Los Angeles, Seattle):

$172,000 — $215,000 USD

Tier 2 (Austin, Washington D.C. Philadelphia, San Diego, Chicago, Atlanta):

$154,800 — $193,500 USD

Tier 3 (Salt Lake City, all other USA cities):

$146,200 — $182,750 USD

Life at Flex

We understand that it takes a diverse team of highly intelligent, curious, determined, empathetic, and self aware people to grow a successful company. Our HQ is located in New York City, but we have employees located throughout the US, Australia, Canada and South America. We are growing quickly, but deliberately, with a focus on building an inclusive culture. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace.

Offices

Roles posted in New York, San Francisco, and Salt Lake City are hybrid positions with on-site expectations of 2-3 days per week in our local offices. For candidates outside of these areas, you may be eligible for our relocation assistance program.

Benefits

For full-time U.S. employees we offer:

• Competitive medical, dental, and vision
• Company equity
• 401(k) plan with company match
• Unlimited paid time off + 13 company paid holidays
• Parental leave
• Free Flex subscription

For full-time non-U.S. employees, we offer:

• Competitive compensation + company equity
• Unlimited PTO