Sr Systems Engineer

About the role

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 We have an exciting opening for a bright, talented and passionate Senior Systems Engineer to join our infrastructure team. In this role you will build, implement and maintain Linux based application systems in a developing DevOps culture. You will collaborate with other members of our team to ensure availability, performance, reliability, and security for our users and clients. Duties/Responsibilities Operate and continuously improve Linux systems engineering and administration. Deployment and automation of applications via Salt & Ansible. Troubleshoot, diagnose and resolve server events and user incidents relating to Linux systems. Engage in detailed planning, change control and thorough testing to ensure performance, availability and stability. Security related activities, system hardening, patching, vulnerability threat management and mitigation. Manage and deploy system monitoring and management tools such as DataDog, LogicMonitor, Sentinel One, SNMP, etc. Design and create automation to execute tasks and/or processes using scripting languages (Shell Scripting, Powershell, PERL, Python). Create and maintain clear and accurate system documentation. Ensure high performance and reliability of production systems by performing system monitoring and analysis, performance tuning, and troubleshooting system hardware, software, and applications. Partner with Software Engineering teams to develop proactive maintenance plans, schedule maintenance windows, implement the changes, and follow-up. Maintain non-proprietary application stack (Kubernetes, Docker, Kafka, MongoDB, RabbitMQ, Zookeeper). Oversee infrastructure environment (VMWare, Storage, Backups, etc). Education and/or Experience Bachelor's degree in Computer Science or other technical field (or equivalent work experience) required; advanced degree preferred 5+ years of experience in a similar role with experience in Cloud environments (i.e. cloud migration, cloud management, cloud architecture) and hand on Linux Engineering and Administration. Experience with infrastructure related software, including VMWare, noSQL databases (e.g. MongoDB), containerization (e.g. docker), orchestration (e.g. Kubernetes), SAN storage and backup Experience with code management tools such as Git. Experience with TCP/IP networking troubleshooting and tools Experience with configuration management tools (Ansible and SaltStack). Experience writing and maintaining python/powershell/shell scripts/other scripts that automate tech operations. Experience with Dell server hardware. Required Skills/Abilities Excellent organizational and follow-up skills with strong attention to detail. Ability learn new skills to keep up with cutting edge technologies and evolving skill sets. Ability to work in a team environment with much collaboration. Ability to operate with a sense of purpose and urgency. Be passionate about troubleshooting, debugging, and automation. Must possess excellent verbal and written communication skills. Expected to respond to alerts and outages; participate in periodic 24x7 on-call schedule. Skill in providing top notch, responsive customer service to internal and external clients. Work Environment This job operates in a hybrid, office environment 3 days per week. This job may require flexible shifts and days of the week including weekends and holidays, as needed. This job may require travel,