Software Engineer II (Full Stack)

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. 

We’re proud to be recognized for the innovative work we do, the purpose-driven nature of our work, and the collaborative culture we’ve created. Here are just a few of the many awards we’ve recently received: 

Best Places to Work 

2026, 2025, 2024, 2023 - Presented by BuiltIn 

WealthTech of the Year 

2025 - Presented by US FinTech Awards 

The World’s Top 250 Fintech Companies 

2024 - Presented by CNBC 

ABOUT THIS ROLE

Apex is seeking a Full Stack Software Engineer II to join our dynamic team in the tech sector of our financial services and trading business. This role is geared towards a mid-level professional eager to deploy innovative solutions and explore fresh ideas, contributing to various strategic company initiatives. You will work alongside some of the industry’s most adept professionals to address unique challenges in our ever-evolving market. The position offers abundant opportunities for career development through complex projects involving a multitude of technologies and programming frameworks. 

Key Responsibilities: 

• Build sweet UIs – and the frameworks that drive them – on top of APIs designed in collaboration with domain product teams. 

• Think through hard problems and solve them at all layers of the enterprise 

• Write self-documenting and well-tested code with an emphasis on sustainable development practices 

• Work as part of a small, productive development team that cares most about delivering value to the business while emphasizing code quality, peer reviews and strong engineering practices 

• Full Lifecycle Software Engineering: Participate in all phases of the software development lifecycle, from design through development, testing, deployment, and maintenance. 

• Quality Assurance and Standards: Write high-quality, well-tested code and maintain strict coding standards through regular code reviews, mentoring, and coaching within your team. 

• Project Management: Effectively manage project priorities, deadlines, and deliverables using your extensive technical expertise. 

• Continuous Learning: Engage in ongoing training to deepen your understanding of options trading, financial markets, and the technologies that drive these sectors such as RDBMS, Kubernetes, Docker, and Google Cloud Platform. 

Education and Experience: 

• Bachelor's or Master’s degree in Computer Science, Software Engineering, Electrical Engineering, Computer Engineering, or a related technical discipline.  

• 3-5 years in software development within a technology-driven organization. Experience in financial services is a plus but not required. 

Preferred Qualifications: 

• Advanced Technical Proficiency: Demonstrated ability to work with complex computing environments and large-scale projects involving cloud platforms and containerization technologies. 

• Financial Markets Knowledge: A keen interest or background in financial markets, trading platforms, or related technologies provides a valuable perspective. 

• Professional Development: Continued education or certifications in relevant programming languages, cloud services, or software development methodologies. 

• A passion for UX: you understand in your bones that page speed, asset size, and critical render path all affect your users. Pixel-perfect layout may or may not be your thing, but you know that a subtly bad form can ruin a user’s impression of your application. 

Knowledge, Skills, and Abilities: 

• Technical Skills: Proficient in multiple programming languages including; React, Native, React.JS, TypeScript, JavaScript, Redux, Git, GraphQL, gRPC, Java, with a strong grasp of object-oriented principles. Expertise in using modern development tools and environments. 

• Problem-Solving: Exceptional problem-solving capabilities with a detailed and methodical approach to troubleshooting and project execution. 

• Communication: Excellent verbal and written communication skills necessary for team collaborations and documentation. 

• Adaptability: High adaptability to new challenges and changes in technological and business environments. 

• Initiative: Proactive in learning, advancing personal skills, and contributing to team success with innovative ideas. 

• A practice of writing technical documentation, whether ADRs, design docs, or just sequence diagrams 

#engineering #mid-senior #full-time #LI-SD1 #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.