Senior Application Support Engineer (Trading & Financial Applications)

Hey there, think you stumbled upon this job posting by chance? We don't believe in chance at Nimber. Caught your eye? Great. Keep going... We are Nimber, and we are not just filling positions, we are building a team that is ready to shake things up. If you are ready to rewrite the rules and make a real impact, this is your moment. Join us and let's put the future where it belongs. In the hands of passionate people. But what does Nimber mean? In mathematics and game theory, nimbers are numbers with special properties of addition and multiplication. And what we really want is to add value to our customers' projects. Position: Senior Application Support Engineer (Trading & Financial Applications) Location: Lisbon or Porto (Hybrid) Job Summary We're looking for a Senior Application Support Engineer to join a Production Engineering team responsible for the reliability, stability and continuous improvement of critical business applications. This role goes far beyond traditional support. You'll be working at the intersection of operations, engineering and application management, ensuring that business-critical services remain available, resilient and optimized. You'll contribute to the industrialization and automation of application support processes while helping drive operational excellence across a complex ecosystem. You'll be responsible for monitoring applications, resolving incidents, supporting change activities and continuously improving application performance and reliability. If you enjoy troubleshooting complex systems, automating repetitive tasks and taking ownership of production environments, this role is for you. Key Responsibilities Ensure the availability, stability and performance of business-critical applications in production environments; Investigate, troubleshoot and resolve application incidents within agreed service levels; Support production releases, deployments and change management activities; Analyze recurring incidents and implement permanent fixes through root cause analysis; Contribute to the automation, standardization and industrialization of support activities; Participate in application lifecycle management, including maintenance and continuous improvement initiatives; Collaborate closely with development, infrastructure, network and security teams; Monitor application health, performance and operational KPIs; Create and maintain operational procedures, support documentation and knowledge bases; Participate in on-call rotations and production support activities when required; Ensure compliance with operational governance, security and risk management practices; Identify opportunities to improve reliability, observability and operational efficiency. Requirements 6+ years of experience in Application Support, Production Support, Production Engineering or similar roles; Strong experience supporting critical applications in enterprise environments; Solid Linux administration knowledge; Experience working with job schedulers such as Control-M or equivalent enterprise scheduling solutions; Experience managing and troubleshooting web and application servers, including Apache HTTP Server, JBoss and Tomcat; Good understanding of application architectures and distributed systems; Knowledge of networking fundamentals, protocols and infrastructure concepts; Experience working within DevOps-oriented environments; Understanding of CI/CD practices and software delivery processes; Basic database knowledge with the ability to query and analyze application-related data; Strong troubleshooting and incident management skills; Experience working with Agile methodologies such as Scrum or Kanban; Strong communication and stakeholder management skills; Professional proficiency in English. Technical Environment You'll likely work with technologies such as: Linux (main operating system) Windows Server Control-M or equivalent workload automation tools Apache HTTP Server JBoss Tomcat CI/CD Pipelines DevOps Tooling Database Technologies Enterprise Monitoring Solutions Network and Infrastructure Components Nice to Have Experience supporting trading, capital markets or financial services applications; Familiarity with ITIL processes and Service Management practices; Scripting and automation skills using Shell, Python or similar technologies; Experience with monitoring and observability platforms; Exposure to cloud-based environments and modern infrastructure platforms; Knowledge of security best practices within production environments; Experience supporting high-availability and business-critical systems; French language skills. What We're Looking For Beyond technical expertise, we're looking for someone who is: Autonomous and accountable; Detail-oriented and rigorous in execution; Comfortable working under pressure in production environments; A collaborative team player; Proactive in identifying improvements and solving problems before they become incidents; Passionate about reliability, operational excellence and continuous improvement. Ready to help keep mission-critical systems running at their best while driving automation, stability and operational excellence? Let's talk. Nimber is waiting for you.