Senior Software Developer & Middleware Engineer

| Location: Off-Site | Contract

We are seeking a hands-on Senior Software Developer & Middleware Engineer to support the migration of an enterprise content management platform from on-premises infrastructure to a colocation environment. This role combines deep software engineering expertise with middleware, platform engineering, and site reliability practices, focusing on modernizing legacy applications and ensuring high reliability, performance, and scalability within a regulated industry environment.

Key Responsibilities

• Designs, refactors, and modernizes Java (Spring, REST) and .NET (C#, ASP.NET) applications integrating with enterprise content management systems and dependent systems.
• Architects and implements API-driven or service-oriented architectures to replace legacy integrations.
• Optimizes and troubleshoots SQL queries and stored procedures to enhance performance and data integrity.
• Develops and integrates secure authentication, authorization, and identity solutions, including Azure AD, Okta SSO, MFA, and SCIM.
• Administers IBM WebSphere, including JVM tuning, SSL configuration, session management, and automates deployment and configuration tasks.
• Supports Control M batch scheduling, SLA management, and automates recovery workflows.
• Troubleshoots complex multi-system issues spanning applications, integrations, middleware, and infrastructure.
• Implements and tunes Dynatrace monitoring for baseline performance, anomaly detection, and error budget management.
• Builds and maintains Splunk dashboards, alerts, and enterprise logging standards.
• Participates in on-call rotations, incident response, and conducts blameless postmortems.
• Enhances CI/CD pipelines using Azure DevOps, GitHub Actions, or GitLab, including automated builds, tests, deployments, and rollbacks.
• Implements Infrastructure-as-Code/Configuration-as-Code using Ansible or pipelines-as-code approaches.
• Applies policy-as-code and secrets management to ensure secure, repeatable deployments.
• Integrates with event-driven systems, message queues (MQ/Kafka), API gateways, and service meshes.
• Collaborates with network/security teams on TLS/certificate management, F5 LTM/GTM, DNS configurations, and Zero Trust policies.
• Supports JSON/XML-based integrations and enterprise workflow/document management patterns.
  
  

Required Qualifications

• 8 years in enterprise software, middleware, SRE, and platform engineering roles.
• Strong Java and .NET development expertise, with experience in application modernization and refactoring.
• Deep experience with IBM FileNet (CPE, Process Engine, IBM Navigator, Enterprise Records).
• IBM WebSphere administration and deployment expertise.
• Proficient in SQL optimization, Control M operations, Dynatrace, and Splunk.
• Hands-on experience with Python, Bash, Ansible, Linux/Unix, container security, Kubernetes/OpenShift/AKS/EKS, and CI/CD pipelines.
• Familiarity with authentication and identity systems (Azure AD, Okta SSO/MFA/SCIM).
• Strong understanding of JSON, XML, REST/SOAP APIs, and messaging systems.
• Ability to work remotely in an off-site environment with W-2 employment preference.
  
  

Preferred Qualifications

• Experience with IBM Datacap or IBM Content Collector.
• Background in financial services or regulated industries.
• Exposure to Docker, container orchestration, service mesh, OAuth/OIDC, and secrets management.
  
  

About Delphi-US - Peacemakers In The Talent War

Delphi-US is a national IT Services firm based in Newport, Rhode Island. Delphi attracts our nation's best and brightest Technical & Professional Talent and positions our nation's finest employers to further their competitive advantages. Delphi's core technical focus includes Data Sciences & Analytics, Modern AI/ML Model Monetization, Cloud Engineering, Cyber Security, ERP Rescue; serving domains from sensitive national energy sectors to critical financial services, biomed, lifesciences & pharma, major government & municipal institutions, and much of the USA's Fortune 500 corporations. Delphi Associates are deployed on critical IT Projects where their consultative business acumen, comprehensive technical expertise, and committed service mission drives our client's success. Our proprietary skill-based and cultural matching process results in higher qualified project teams, custom curated for our client’s specific technical & functional goals. We are supremely experienced, friendly, professional, and ready to advocate on your behalf. Delphi has an indelible understanding of employer expectations, a track record of project success and we deliver lasting results.

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