Senior Software Engineer, Backend

Flex; México; A distancia; USD 60,000 - 110,000; Jornada completa

Descripción de la vacante

An innovative FinTech company is seeking a talented Software Engineer to join their dynamic team. This role focuses on developing backend systems that enhance the rent payment experience for users. You'll work closely with cross-functional teams to design and implement robust APIs, ensuring seamless integration and functionality. The ideal candidate will thrive in a fast-paced environment, demonstrating ownership and expertise in Java and related technologies. Join a company that values diversity and fosters an inclusive culture, providing you with the opportunity to make a real impact on users' lives while enjoying competitive benefits and a supportive work environment.

Servicios

100% company-paid medical, dental, and vision

401(k) + company equity

Unlimited paid time off

Parental leave

Free Flex subscription

Formación

• 6+ years in software engineering with a focus on Java.
• Experience in building scalable, fault-tolerant systems.
• Proficient in AWS and containerization tools.

Responsabilidades

• Implement backend systems supporting business features.
• Collaborate with teams to enhance user experiences.
• Design and maintain APIs for various integrations.

Conocimientos

Java

Software Engineering

API Design

Data Pipeline Management

Service-Oriented Architecture

Agile Methodologies

Cross-Functional Collaboration

Herramientas

Spring Framework

AWS

Gradle

JUnit

CI/CD (GitHub Actions)

DataDog

Terraform

Descripción del empleo

Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2025 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team?

About the job

Flex is looking for a 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.

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.

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.

We offer many employee benefits. For full time, U.S. based employees we offer:

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

For full time non-US employees, we offer

• Competitive Pay
• Company Equity
• Unlimited PTO

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