Application Support Engineer (US)

Job Description Job Description We are looking for a skilled Application Support Engineer to join our team supporting Nadex, a regulated derivatives trading exchange for TradeFi and Prediction Markets. You will play a critical role in ensuring the availability, stability, and performance of our production and demo trading environments. This is a hands-on role suited for someone who thrives in a fast-paced, mission-critical environment and takes ownership of operational excellence. Responsibilit…

Responsibilities Production Support & Monitoring — Provide expert-level remote management, administration, and support for Production and Demo trading exchange environments, ensuring system availability and application stability. Daily Operations — Execute and monitor daily operational processing, including contract scheduling, settlement of expired contracts, and end-of-day/start-of-day procedures. Incident & Problem Management — Triage, troubleshoot, and drive resolution of production incidents. Follow defined escalation procedures and contribute to root cause analysis and post-incident reviews. Performance Tuning — Monitor application and system performance, identify bottlenecks, and implement tuning recommendations to maintain optimal exchange operations. Change & Release Support — Assist with version upgrades, deployments, and release validation in coordination with Development and QA teams. Shift Handover & Documentation — Maintain and update runbooks, SOPs, and operational documentation. Ensure seamless shift handovers with clear status communication. Process Improvement & Automation — Participate in the investigation, implementation, and operation of tools and scripts to automate, streamline, and continuously improve operational workflows. Collaboration — Work closely with Development, QA, Infrastructure, and partner teams to resolve cross-functional issues and support business-critical initiatives. Partner Support — Monitoring of our multiple partner channels covering FCMs, TSPs, and Market Makers and responding to any queries raised in Slack or Teams effectively and efficiently. Requirements 5+ years of experience managing or supporting mission-critical production software applications. Strong working knowledge of Linux server operating systems. Proficiency in scripting and automation — Bash and/or Python. Hands-on experience with SQL and relational databases. Demonstrated incident management and technical troubleshooting skills. Solid understanding of escalation procedures and SLA-driven environments. Excellent interpersonal, verbal, and written communication skills. Strong attention to detail and a proactive, ownership-driven mindset. Willingness to occasionally work nights and weekends. Preferred Qualifications Background in financial services, fintech, or regulated exchange environments. Knowledge or experience of options and futures trading markets. Knowledge or experience of prediction markets and sports Experience with FIX protocol and trading system applications. Familiarity with monitoring and observability tools — Grafana, Zabbix, Splunk, Logic Monitor. Experience with messaging and middleware systems — Kafka, AMQ, Tomcat. Working knowledge of high availability systems and clusters. Hands-on experience with AWS (EC2, CloudWatch, S3, etc.). Experience with change and release management processes. Exposure to SFTP / file transfer workflows and monitoring.