Senior Systems Engineer

It's fun to work in a company where people truly BELIEVE in what they're doing!

Fullsteam is a leading provider of vertical software and embedded payments technology dedicated to helping businesses flourish by providing their customers with seamless experiences. With a dynamic and growing team of over 1,900 employees, we are committed to driving innovation and delivering best-in-class software and payment solutions that empower small and medium-sized businesses across numerous industries. Our purpose is to help our customers grow their businesses and delight their customers. Join us and be a part of a forward-thinking company that values growth, excellence, and the success of our clients.

We are seeking a highly skilled Senior Systems Engineer to lead the design, implementation, and support of our enterprise infrastructure and application platforms. This role will focus on 40% infrastructure engineering (servers, networking, middleware), 20% Oracle DBA tasks, and 40% Oracle APEX development.

The ideal candidate will have deep expertise in Oracle Linux, ORDS, Middleware, DNS, Apache, Networking, and Oracle 19c/Oracle APEX, with a strong understanding of Git-based version control and experience collaborating with DevSecOps teams to drive automation and deployment pipelines. Experience with Azure or AWS Cloud is a plus.

Key Responsibilities

Infrastructure & Middleware Engineering (40%)

• Support, help design, and maintain Oracle Linux servers, Oracle REST Data Services (ORDS), and middleware platforms supporting mission-critical applications.
• Manage Apache web servers, DNS, email routing, SSL/TLS certificates, and load balancer configurations.
• Implement networking best practices for security, availability, and performance across on-premises and hybrid environments.
• Monitor system performance, automate patching, backups, and system health checks using tools such as Ansible, shell scripting, or similar automation frameworks.
• Monitor WAF (Fastly) and SIEMENS (Splunk) for security related attacks.
• Collaborate with security and DevSecOps teams to ensure compliance with corporate and regulatory requirements.
• Maintain proper documentation for systems, procedures, and infrastructure designs.
   

Database Administration (20%)

• Perform Oracle 19c database administration, including backups, tuning, patching, and user management.
• Work with developers to optimize SQL queries, troubleshoot performance issues, and maintain high database availability.
• Collaborate with Infrastructure team and engineers to advise on current and future disaster recovery strategies and ensure all environments are aligned with business continuity goals.
• Support schema migrations and changes through structured version control and deployment processes.

Oracle APEX Development (40%)

• Develop and maintain Oracle APEX applications supporting continued product development.
• Integrate APEX with REST APIs, middleware, and external services where needed.
• Gather requirements, design user-friendly interfaces, and deploy secure, performant APEX applications.
• Maintain version-controlled APEX artifacts and promote structured, repeatable deployment practices.

Version Control & DevSecOps Collaboration

• Manage source code using Git and GitHub, ensuring consistent branching strategies, code reviews, and release workflows.
• Collaborate with DevSecOps teams to design and enhance CI/CD pipelines using GitHub Actions for automated testing, building, and deployment.
• Support and enforce best practices in secure code handling, change management, and traceability across environments.

Cloud & Automation

• Work with Azure or AWS services (EC2, RDS, S3, VPC) for hybrid infrastructure deployments and cloud integrations.
• Assist in automation initiatives for infrastructure provisioning and application deployments using Terraform, Ansible, or AWS CloudFormation.
• Participate in migration planning for legacy workloads into modern, cloud-native solutions.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent work experience).
• 10+ years of experience in systems engineering, infrastructure management, or DBA roles.
• Strong expertise in:
  • Oracle Linux administration and system optimization.
  • Oracle 19c Database administration and performance tuning.
  • Oracle ApEx and PL/SQL, Stored Packages/Procedures/Functions, Triggers
  • Oracle Web Development (HTML, Javascript, PL/SQL and ApEx Toolkit)
  • ORDS and Oracle APEX deployments in production environments.
  • Apache HTTP Server configuration, troubleshooting, and security hardening.
  • DNS, email routing (Postfix/Sendmail), and networking fundamentals.
  • Git/GitHub version control, branching strategies, and release management.
• Experience collaborating with DevSecOps teams to implement CI/CD pipelines (GitHub Actions preferred).
• Knowledge of security best practices for databases, web servers, middleware, and infrastructure.
• Familiarity with Azure or AWS Cloud (EC2, RDS, S3, VPC) is a plus.

Soft Skills

• Strong problem-solving skills and proactive mindset for troubleshooting and optimization.
• Excellent communication and documentation skills for cross-team collaboration.
• Ability to mentor junior team members and guide best practices for secure, efficient infrastructure management.
• Comfortable working in a hybrid role supporting infrastructure, database administration, and application development.

Fullsteam supports an inclusive workplace that values diversity of thought, experience, and background. Fullsteam is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, ancestry, age, physical or mental disability, sex, sexual orientation, gender identity/expression, pregnancy, veteran status, marital status, creed, status with regard to public assistance, genetic status or any other status protected by federal, state, or local law.