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Apex Fintech Solutions

Staff Software Engineer

Sorry, this job was removed at 08:18 a.m. (IST) on Wednesday, Aug 13, 2025
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Hybrid
Austin, TX
Hybrid
Austin, TX

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WHO WE ARE

Apex Fintech Solutions (AFS) powers innovation and the future of digital wealth management by processing millions of transactions daily, to simplify, automate, and facilitate access to financial markets for all. Our robust suite of fintech solutions enables us to support clients such as Stash, Betterment, SoFi, and Webull, and more than 20 million of our clients' customers. 

Collectively, AFS creates an environment in which companies with the biggest ideas in fintech are empowered to change the world. As a global organization, we have offices in Austin, Dallas, Chicago, New York, Portland, Belfast, and Manila.

If you are seeking a fast-paced and entrepreneurial environment where you'll have the opportunity to make an immediate impact, and you have the guts to change everything, this is the place for you. 

AFS has received a number of prestigious industry awards, including:

  • 2021, 2020, 2019, and 2018 Best Wealth Management Company - presented by Fintech Breakthrough Awards

  • 2021 Most Innovative Companies - presented by Fast Company

  • 2021 Best API & Best Trading Technology - presented by Global Fintech Awards

ABOUT THIS ROLE

Apex Fintech Solutions is seeking an experienced Staff Software Engineer to drive the evolution of its cutting-edge Margin product—a vital component of the Apex Ascend platform. This role focuses on architecting and delivering mission-critical features for real-time buying power calculations and scalable applications and services. As a Staff Engineer, you will work in a fast-paced environment, leveraging modern cloud-native solutions and driving the development of innovative backend systems while influencing technology decisions across teams.

Duties/Responsibilities

  • Backend Engineering: Architect, implement, deploy, and maintain high-performance backend systems using Java to support Margin product functionality and scalability.   

  • Microservices Development: Design and manage containerized microservices with Kubernetes and Docker, ensuring scalability, reliability, and fault tolerance.   

  • Cloud-Native Solutions: Build and optimize infrastructure leveraging Google Cloud Platform and related services such as Google Pub/Sub.   

  • Distributed Systems: Develop scalable, event-driven systems utilizing Kafka, RabbitMQ, Redis, and PostgreSQL.   

  • API Development: Create secure, reliable gRPC and REST APIs for internal and external integration.   

  • Data Handling: Utilize relational databases, particularly PostgreSQL, for backend services that require efficient storage, querying, and transaction processing in Java-based systems.   

  • Problem Solving and Optimization: Diagnose and resolve complex technical challenges, optimizing system performance, availability, scalability, and maintainability.   

  • Collaboration & Communication: Work effectively within geographically distributed teams, explaining technical concepts to non-technical stakeholders and fostering alignment on architecture and development strategies.   

  • Leadership: Provide guidance to the engineering team, mentor junior developers, and drive key projects to successful delivery. Foster a culture of innovation, collaboration, technical excellence, and continuous learning.   

  • System Design and Architecture: Contribute to and influence architectural decisions, ensuring alignment with scalability, security, and cross-team development strategies.   

Education and/or Experience

  • BA, BS, MS, PhD in Computer Science, Engineering or related technology field (or equivalent work experience) required

  • 12+ years of experience in backend development, including designing, implementing, and maintaining distributed systems and large-scale microservices.   

  • Proven experience leading technical teams and mentoring junior or mid-level developers in a collaborative environment. 

  • Certifications in Java, Kubernetes, or cloud platforms (e.g., Google Cloud) preferred

Required Skills/Abilities

  • Familiarity with financial systems, risk modeling, and compliance within regulated environments to build high-quality and secure solutions.   

  • Expertise in fault-tolerant system design, high-availability services, and handling high-throughput, real-time data processing.   

  • Proficiency in performance tuning and optimizing backend systems to ensure scalability and reliability.   

  • Solid understanding of DevOps principles with hands-on experience in CI/CD pipelines and deployment automation.   

  • Understanding of security best practices for APIs, backend systems, and infrastructure. 

Work Environment

  • This job operates in a hybrid, office environment 3 days per week.

#engineering #mid-senior #full-time #LI-MJ1 #APEX

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

Our Rewards

We offer a robust package of employee perks and benefits, including healthcare benefits (medical, dental and vision, EAP), competitive PTO, 401k match, parental leave, and HSA contribution match. We also provide our employees with a paid subscription to the Calm app and offer generous external learning and tuition reimbursement benefits. At AFS, we offer a hybrid work schedule for most roles that allows employees to have the flexibility of working from home and one of our primary offices.

EEO Statement

Apex Fintech Solutions is an equal opportunity employer that does not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, veteran status, marital status, or any other protected characteristic. Our hiring practices ensure that all qualified applicants receive fair consideration without regard to these characteristics.

Disability Statement

Apex Fintech Solutions is committed to creating an inclusive and accessible workplace for all candidates, including those with disabilities. We are dedicated to ensuring equal employment opportunities and providing reasonable accommodations to qualified individuals with disabilities. If you require reasonable accommodations to participate in the application or interview process, please submit your request via the Candidate Accommodation Requests Form. We will work with you to provide the necessary accommodations to ensure your full participation in our hiring process.

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