Apache /Middleware Engineering SpecialistVDart Inc • Toronto, ON, Canada
Apache / Middleware Engineering Specialist
VDart Inc • Toronto, ON, Canada
5 days ago
Job type
- Full-time
- Quick Apply
Job descriptionDesign reverse proxy and app tier topologies : Active / active Tomcat clusters with load balancing & health checks (at Apache layer or external LB). Session management strategy : sticky sessions via cookie, or session replication / Redis-backed sessions when stickiness is not possible. Performance engineering : Tomcat connector threads, acceptCount, connectionTimeout, JVM sizing (Xms / Xmx), GC tuning (G1 / Parallel), and thread pools. Connection reuse (HTTP keep-alive), upstream timeouts, and proper buffer sizing. High availability & scaling : Canarying via path / host routing and weighted backends (LB or Apache ProxyPass with status routes). Security hardening : Disable insecure HTTP methods; harden headers (CSP, X-Frame-Options, X-Content-Type-Options). For AJP, bind to localhost or private subnets , set secretRequired="true" with secret, or disable AJP unless required. Tomcat hardening : remove default apps, lock down manager / host-manager, JMX protection, minimal privileges, log sanitization. Lifecycle management : Runbooks for incident handling, failover, and rollbacks. Develop idempotent Ansible roles and collections-based playbooks for : Apache install, vhosts, TLS, reverse proxy config, headers, logrotate. Tomcat install (tar or distro), systemd service, server.xml, connectors, JVM / GC flags, keystores, context.xml, logging. Application deployment hooks (WAR rollout with pre / post checks), health checks, and rollback. Rolling updates (serial strategy), blue / green or canary via inventory groups or variables. Integrations : JMX exporter, mod_status, metrics / log shipping agents. Safety guards : pre-flight checks (ports, disk, Java version), post-verify (HTTP 200 / health, JMX metrics thresholds), and automated backout. Partner with App teams for capacity, route maps, and deployment patterns. Define standards, runbooks, and design docs; perform DR tests. Align with security frameworks (CIS, SOC2 / ISO / PCI as applicable). 5+ years administering Apache HTTP Server and Apache Tomcat in production at scale. 3+ years Ansible (roles, collections, Molecule, CI / CD). Strong Linux (RHEL), networking, TLS / PKI, and load balancing fundamentals. JVM operation basics (heap / GC) and Java web app deployment experience.
Role : Apache / Middleware Engineering Specialist
Location : Toronto, ON
Contract
Job Specification :
Apache HTTP Server & Tomcat Design + Ansible Automation Engineer
Role Summary
Design resilient, secure, and scalable Apache HTTP Server (httpd) and Apache Tomcat platforms for Java web applications. Build Ansible automation to provision, harden, operate, and upgrade httpd and Tomcat across dev / stage / prod. Partner with SRE, Security, and App teams to deliver high availability, predictable performance, and hands-off operations via GitOps and CI / CD.
Title options :
- Senior Web Platform Engineer (Apache / Tomcat & Ansible)
- Web Middleware Platform Engineer (Ansible)
- Infrastructure Engineer Apache & Tomcat Automation
Responsibilities
Architecture & Operations (Apache HTTPD + Tomcat)
Single or dual Apache HTTPD layers (edge and internal), terminating TLS; mod_proxy_http or AJP (with hardening) to Tomcat.
Apache MPM tuning (event / prefork), worker counts, KeepAlive, compression, caching (mod_cache), HTTP / 2 where feasible.
Multi-AZ / region design, zero-downtime rolling deploys, blue / green cutovers.
TLS 1.2+ (ideally 1.3) with strong cipher suites, HSTS, OCSP stapling; cert rotation via ACME / Let's Encrypt or enterprise PKI.
Patch, upgrade, and config rollouts with Ansible ; drift detection & remediation.
Ansible Automation
OS hardening, users / groups, limits, sysctl, firewalld / ufw.
Collaboration & Governance
Minimum Qualifications
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Apache Middleware Engineering Specialist • Toronto, ON, Canada
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