Senior Software Engineer

WHO WE ARE

Apex Fintech Solutions (Apex) powers innovation and the future of digital wealth management by building tech-forward solutions that help simplify, automate, and facilitate access to financial markets for all. Our robust suite of fintech software enables us to support clients such as Stash, Betterment, SoFi, Webull, and eToro, amongst many others; collectively, Apex powers access to the stock market for over 22+ million end customers.

At Apex, we are changing how the securities industry operates by reinventing the status quo, which was manual, slow, and accessible only by the ultra-wealthy. We're digitizing and democratizing systems so that everyone has an opportunity to invest.

When you're at Apex, you drive this change. You're part of a global team with a clear vision: to be the trusted technology that powers the digital economy. Our offices in Austin, Dallas, Chicago, New York, Portland, Belfast, and Manila are home to over 1,000 employees.

Together, we're shaping the future of financial innovation. Embrace change. Solve big. Win together. And be G.R.E.A.T. — grit, results, empathy, accountability, and teamwork — with Apex.

• Best Places to Work 2026, 2025, 2024, 2023 — Presented by Built In
• Wealth Tech of the Year 2025 — Presented by US Fin Tech Awards
• The World's Top 250 Fintech Companies 2024 — Presented by CNBC

Apex Fintech Solutions is seeking a Senior Software Engineer to play a key role on our engineering team, responsible for designing, developing, and maintaining high-quality software solutions. You will leverage your expertise to contribute to the software development lifecycle, from requirements analysis and implementation to testing and deployment. You will collaborate with team members and cross‑functional partners to deliver scalable, reliable, and efficient software products that meet the needs of our users and business objectives.

• Software Development:
  Contribute to the development, support, and quality assurance efforts of our technology products that power our platforms and services. Utilize automated testing extensively to ensure the reliability and accuracy of the services.
• Software Architecture and Design:
  Participate in architectural decisions and design of scalable, distributed systems. Contribute to technical direction and implementation strategies, ensuring solutions are maintainable, performant, and aligned with business objectives.
• Technical Documentation:
  Create and maintain technical documentation and guides, ensuring they are up to date, accurate, and easy to understand for both internal teams and external stakeholders.
• Product Releases and Deployments:
  Support product releases and deployments, working with cross‑functional teams to ensure smooth and successful releases into production environments.
• Data Analysis:
  Analyze datasets for accuracy and logical values, leveraging your analytical skills to ensure data integrity and contribute to insights that drive decision‑making and product improvements.
• Code Review and Quality Assurance:
  Participate in code reviews, identify areas for improvement, and ensure adherence to coding standards, best practices, and quality metrics.
• Team Mentoring and Leadership:
  Mentor junior and mid‑level engineers, providing technical guidance and promoting best practices. Actively participate in the recruitment and onboarding of new team members, fostering a culture of technical excellence and continuous learning.
• AI Tools and Practices:
  Leverage AI‑assisted development tools to enhance productivity, code quality, and solution innovation. Stay informed about ways AI can support software engineering and delivery.
• Cross‑Functional
  
  Collaboration:
  
  Work closely with product managers, designers, and other stakeholders to understand requirements, implement technical solutions, and deliver high‑quality software products on time.
• Problem Solving and Troubleshooting:
  Investigate and resolve technical issues, troubleshoot production incidents, and implement solutions to minimize system downtime and ensure service reliability.
• Continuous Learning and Innovation:
  Stay updated on industry trends, emerging…