UNIX L3 Production Support

QUANTEAM (SINGAPORE) PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

QUANTEAM (SINGAPORE) PTE. LTD. seeks a Unix L3 Production Support Engineer to ensure availability, reliability, and scalability of mission‑critical payment platforms.

You will operate Unix/Linux systems, implement high availability, configure load balancing, and maintain servers and middleware across cross-border payments with teams in Switzerland. The role emphasizes advanced shell scripting, Docker in production, incident response, and ongoing automation through CI/CD and monitoring tools.

Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering or a related field.
• ],
• job_responsibilities_description:[

Responsibilities

• Operate and support the payment platform at a Unix/Linux level with automation.
• Set up high availability: clustering, failover, redundancy.
• Configure load balancing across nodes and validate behavior under failure.
• Install, configure and commission servers and middleware hosting payment apps.
• Maintain platform during incidents: isolate issues, fail over, restore service, identify root cause.
• Troubleshoot production incidents and deploy/ orchestrate containers with Docker.
• Maintain and tune web servers (Apache, NGINX).
• Streamline deployments with CI/CD pipelines (XLDeploy, Nexus).
• Ensure monitoring with Splunk or Dynatrace.
• Analyze and resolve Tier-3 payment incidents.
• Propose and implement resilience and automation improvements (SRE).

Skills

Unix/Linux

Shell scripting

Docker

High availability

Load balancing

SQL

Web servers

Microservices

Analytical mindset

Ownership

Education

Bachelor's or Master's in CS/Engineering

Tools

Docker

Jenkins

Ansible

GitLab CI

Kafka

RabbitMQ

REST APIs

Job description

UNIX L3 Production Support / High Availability

Main Mission We are looking for a ProductionEngineer to ensure the availability, reliability and scalability of the mission-criticalpayment platforms (instant payments, SWIFT, cross-border). This is a high-level productionsupport role, and the core of it is Unix . The person will not only monitorand accelerate: they will set up high availability, configure load balancing,install and commission servers, and keep the platform up when something goeswrong, working at system level on Unix/Linux. The role works hand in hand with thecross-border payments production team in Switzerland.

Key Responsibilities

• Operate and support the paymentplatform at an advanced Unix/Linux system level, with strong shellscripting and automation
• Set up and maintain highavailability : clustering, failover, redundancy
• Configure and operate load balancing across application nodes, and validate behaviour under failure
• Install, configure and commission theservers and middleware that host the payment applications
• Keep the platform running throughincidents: isolate the faulty component, fail over, restore service, then findthe root cause
• Troubleshoot and resolve productionincidents (log analysis, performance tuning, process recovery) - Build, deployand orchestrate containers with Docker
• Maintain, configure and tune web andapplication servers (Apache, NGINX or equivalent)
• Streamline deployment with CI/CDpipelines, using XLDeploy and Nexus for artifact management
• Ensure application and systemmonitoring through Splunk or Dynatrace
• Analyse and resolve level 3 tickets onthe payment stream
• Proactively propose and implementcontinuous improvements: resilience, automation, incident reduction, SREpractices

Required Skills & Experience

• Bachelor's or Master's degree inComputer Science, Engineering or a related field
• At least 3-6 years ofhands-on experience in production support of payment systems , DevOps orapplication operations (preferably in Payments, FinTech or Banking)
• Expert-levelUnix/Linux. This is the single most important requirement. Real systemadministration, tuning and troubleshooting, with advanced shell scripting, notcommand-line familiarity
• Strong hands-on Docker. Building, deployingand debugging containers in production, evidenced at role level and not only ina skills list
• Hands-on experience with high availability and loadbalancing in a production environment: clustering, failover, redundancy,and what happens when a node is lost
• Solid database skills: SQL, queryinvestigation and performance troubleshooting
• Good grasp of web serverarchitectures and microservices concepts
• Advantageous: VOLPAY, payments rails(instant payments, ISO 20022, SWIFT MT/MX), Jenkins, Ansible, GitLab CI, Kafka,RabbitMQ, REST APIs

Profile

• Curious and hands-on. Wants tounderstand how the platform works, not just follow a runbook
• Approachableand collaborative. Works daily with the payments production team inSwitzerland, so clear, direct communication across sites is essential
• Adaptable. Comfortable in a fast-moving environment where tooling and practices evolve
• Analytical mindset, strong problem-solving, and ownership of productionoutcomes
• Willingness to build expertise in Managed Payments operations