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Senior Middleware Engineer Jobs in California (NOW HIRING)

Nvidia

HPC Middleware Developer

Santa Clara, CA · On-site

We are now looking for a senior HPC software engineer. As a member of our the High Performance Computing Software development team, you will be responsible for designing and implementing new ...

Nvidia

HPC Middleware Developer

Santa Clara, CA

We are now looking for a senior HPC software engineer. As a member of our the High Performance Computing Software development team, you will be responsible for designing and implementing new ...

Anduril Industries

Senior Software Engineer

Costa Mesa, CA · On-site

$131K - $173K/yr

ABOUT THE JOB We are looking for a Senior Software Engineer to join the LatticeOS team, where you ... Design and implement core components and middleware for LatticeOS running onboard autonomous ...

Form Energy

Senior Staff Security Engineer

Berkeley, CA · On-site

$141K - $194K/yr

Role Description As a Senior Staff Product Security Engineer , you will operate as an elite ... Secure Middleware Engineering (50%): Write clean, production-grade, and memory-safe systems code (C ...

Form Energy

Senior Staff Security Engineer

Berkeley, CA · On-site

$170K - $223K/yr

Role Description As a Senior Staff Product Security Engineer , you will operate as an elite ... Secure Middleware Engineering (50%): Write clean, production-grade, and memory-safe systems code (C ...

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Senior Middleware Engineer information

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How much do senior middleware engineer jobs pay per hour?

As of Aug 31, 2026, the average hourly pay for senior middleware engineer in California is $55.79, according to ZipRecruiter salary data. Most workers in this role earn between $49.09 and $63.37 per hour, depending on experience, location, and employer.

What is a senior middleware engineer?

Senior Middleware Engineers are experienced IT professionals who specialize in designing, implementing, and managing middleware solutions that connect different software applications, databases, and services within an organization. They play a critical role in ensuring seamless communication and data exchange between systems, often working with technologies such as application servers, message brokers, API gateways, and integration platforms. Senior Middleware Engineers also provide technical leadership, troubleshoot complex system issues, and help optimize performance and security in middleware environments.

What are the key skills and qualifications needed to thrive as a senior middleware engineer?

To thrive as a Senior Middleware Engineer, you need advanced knowledge of middleware platforms, integration architecture, and distributed systems, typically supported by a degree in computer science or a related field. Proficiency with tools such as IBM WebSphere, Oracle Fusion Middleware, Apache Kafka, and experience with automation and monitoring solutions is essential, along with relevant certifications. Strong problem-solving abilities, communication skills, and a collaborative mindset set top candidates apart in this role. These skills ensure reliable system integration, efficient troubleshooting, and effective cross-functional teamwork in complex IT environments.

What are some typical challenges a senior middleware engineer faces when integrating new technologies into existing enterprise systems?

Senior Middleware Engineers often encounter challenges when integrating new technologies, such as ensuring compatibility with legacy systems, maintaining data security, and minimizing downtime during deployment. They must carefully plan migrations and develop custom solutions to bridge gaps between different platforms. Effective communication with cross-functional teams, such as developers, system administrators, and security specialists, is essential to anticipate potential issues and implement seamless integrations. Staying current with evolving middleware trends also helps address these challenges proactively.

What is the difference between Senior Middleware Engineer vs Middleware Developer?

AspectSenior Middleware EngineerMiddleware Developer
CredentialsBachelor's/Master's in CS or related, certifications like TOGAF, AWSBachelor's in CS or related, certifications optional
Work EnvironmentDesigns, integrates, and maintains middleware solutions in enterprise settingsDevelops and implements middleware components, often in project teams
Industry UsageUsed across finance, healthcare, telecom, and tech sectorsCommonly found in software development firms and IT departments
Search/Comparison IntentUnderstanding senior roles and responsibilities in middlewareFocus on development tasks and coding skills

The main difference is that a Senior Middleware Engineer typically oversees the design, integration, and maintenance of middleware systems at a higher level, often leading projects and teams. Middleware Developers focus more on coding and implementing middleware components. Both roles require similar technical skills, but the Senior Middleware Engineer has greater responsibilities in architecture and strategic planning.

What are popular job titles related to Senior Middleware Engineer jobs in California?

For Senior Middleware Engineer jobs in California, the most frequently searched job titles are:

What job categories do people searching Senior Middleware Engineer jobs in California look for?

The top searched job categories for Senior Middleware Engineer jobs in California are:

What cities in California are hiring for Senior Middleware Engineer jobs?

Cities in California with the most Senior Middleware Engineer job openings:

Senior Middleware Engineer jobs near you
Infographic showing various Senior Middleware Engineer job openings in California as of August 2026, with employment types broken down into 88% Full Time, 5% Part Time, 2% Temporary, and 5% Contract. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution, with an average salary of $116,046 per year, or $55.8 per hour.

Senior Data / Database Engineer - Integration & Middleware Engineer (Ref: 5801)

Estrada Consulting Incorporated

Los Angeles, CA • On-site

$114K - $155K/yr

Contractor

Posted 3 days ago

New

Job description

Senior Data / Database Engineer – Integration & Middleware Engineer (Ref: 5801)
W2 Contract | Long-Term Engagement (2–5+ Years)
Criminal Justice / Public Safety Systems
Estrada Consulting, Inc. (ECI) is seeking an experienced Senior Data / Database Engineer – Integration & Middleware Engineer for a long-term W2 consulting engagement supporting a large-scale, mission-critical criminal justice information system environment. This is a senior hands-on technical position combining data engineering, database engineering, systems integration, middleware, data exchange, troubleshooting, and production support responsibilities.
This is not a traditional database administration-only position. The successful candidate should have extensive experience supporting complex enterprise data environments in which information is received from numerous source systems, transmitted through middleware/message-broker technologies, processed through data queues and interfaces, consolidated within enterprise databases/data warehouses, and distributed to downstream applications and external systems.
Strong preference will be given to candidates with experience incriminal justice, law enforcement, courts, corrections, public safety, or comparable government information systems.

Position Overview:
The selected consultant will support the data, database, integration, and middleware components of an enterprise criminal-history reporting environment. The environment processes high-volume and near-real-time information received from multiple criminal-justice source systems, including arrest/booking, prosecution, court, disposition, probation, custody, warrant, and statewide criminal-history information. The consultant will maintain, troubleshoot, enhance, and support databases, data interfaces, middleware, message processing, data queues, batch processes, data-consolidation processes, and external system integrations.

Key Responsibilities:
  • Serve as a senior hands-on Data/Database and Integration/Middleware Engineer supporting mission-critical enterprise production systems.
  • Support enterprise database and data-warehouse environments used for high-volume criminal-justice data processing and reporting.
  • Design, develop, maintain, troubleshoot, and optimize complex database solutions.
  • Develop and support Oracle SQL and PL/SQL, stored procedures, functions, packages, triggers, queries, and database-processing logic.
  • Support Oracle 19c or comparable enterprise Oracle database environments.
  • Analyze and optimize database performance, queries, indexing, data access, and high-volume transaction-processing workloads.
  • Support complex data-consolidation, matching, linking, merging, and master-data processing.
  • Design, develop, maintain, and troubleshoot interfaces between multiple upstream and downstream enterprise systems.
  • Support near-real-time and batch data integration across multiple applications and agencies.
  • Maintain and troubleshoot message brokers, middleware, data queues, messaging interfaces, and event-driven data processing.
  • Analyze message/data failures and trace transactions across source systems, middleware, queues, databases, and downstream applications.
  • Support data ingestion and transformation of diverse data structures received from external systems.
  • Develop and maintain interface-processing and data-validation routines.
  • Support enterprise master data management (MDM) and entity/identity resolution processes.
  • Troubleshoot data discrepancies, failed transactions, duplicate or unmatched records, interface failures, and synchronization issues.
  • Support middleware and application-server environments associated with enterprise integrations.
  • Support integration with external government and criminal-justice systems.
  • Perform root-cause analysis of complex production issues spanning database, application, middleware, operating-system, network, and external-interface layers.
  • Support production monitoring, logging, alerting, error handling, recovery, and operational troubleshooting.
  • Participate in application/database upgrades, patches, deployments, configuration changes, performance tuning, and technology refreshes.
  • Develop scripts and utilities supporting data processing, interfaces, monitoring, automation, and operational support.
  • Support scheduled production jobs, background processes, batch processing, and high-volume data exchanges.
  • Maintain technical documentation including database designs, data flows, interface specifications, data mappings, operational procedures, deployment documentation, and troubleshooting guides.
  • Work closely with application developers, technical leads, DBAs, infrastructure engineers, business analysts, project management, County technical personnel, and external agency stakeholders.
  • Participate in scheduled after-hours or weekend maintenance, deployments, upgrades, and production activities when required.

Core Technical Experience: Candidates should have substantial hands-on experience with a combination of the following:
  • Oracle Database / Oracle 19c.
  • SQL and PL/SQL.
  • Enterprise database and data-warehouse environments.
  • Complex relational data models.
  • Database development and performance optimization.
  • High-volume data processing.
  • Enterprise data integration.
  • Middleware and message-broker technologies.
  • Message queues / queued data processing.
  • Near-real-time and batch integrations.
  • Data ingestion and transformation.
  • Enterprise application interfaces.
  • API and/or service-based integrations.
  • ETL/data-processing solutions.
  • Data validation, reconciliation, and error handling.
  • Production monitoring and troubleshooting.
  • UNIX / IBM AIX environments.
  • Shell scripting and production automation.
  • Enterprise application servers and middleware.
  • Oracle WebLogic and/or IBM WebSphere.
  • Source control, release management, testing, deployment, and structured SDLC processes..
  • Highly Desired Technologies / Systems

Candidates should clearly identify experience with any of the following:
  • PIX / Cloverleaf (Proactive Information Exchange).
  • Cloverleaf Integration Engine.
  • IBM Master Data Management (IBM MDM).
  • CCHRS – Consolidated Criminal History Reporting System.
  • CA DOJ Adult Criminal History System (ACHS).
  • Justice Data Interface Controller (JDIC).
  • JDIC Sender / Listener processing.
  • Oracle 19c.
  • IBM AIX.
  • WebLogic.
  • WebSphere.
  • Qlik.
  • C / Pro*C.
  • Message-oriented middleware.
  • Enterprise service integration.
  • Data queues / datagram processing.
  • Master data management.
  • Identity/entity matching and resolution.
  • High-volume batch processing.
  • Near-real-time data exchanges.
  • Criminal Justice / Public Safety Domain Experience.
  • Direct criminal-justice or public-safety data integration experience is highly preferred.

Relevant environments may include:
  • Criminal history repositories.
  • Law-enforcement information systems.
  • Sheriff and police systems.
  • Arrest and booking systems.
  • Jail-management systems.
  • District Attorney / prosecution systems.
  • Court case-management systems.
  • Probation systems.
  • Corrections systems.
  • State Department of Justice interfaces.
  • RAP-sheet / criminal-history processing.
  • Warrant information.
  • Court disposition and sentencing data.
  • Multi-agency justice information exchanges.
  • Criminal-justice data warehouses.
  • Identity matching and subject consolidation.
  • Experience integrating data from multiple independent justice agencies into a centralized criminal-history or justice-information environment is particularly valuable.

Integration / Middleware Experience: The ideal candidate will have experience supporting environments in which data is published from multiple source systems to an enterprise integration or message-broker platform and subsequently consumed by centralized applications.
Relevant experience includes:
  • Message-broker architecture.
  • Publish/subscribe integration.
  • Message queues.
  • Near-real-time messaging.
  • Asynchronous processing.
  • Data/event subscriptions.
  • Interface engines.
  • Message transformation and routing.
  • Data mapping.
  • Failed-message investigation and reprocessing.
  • Queue monitoring.
  • Interface monitoring.
  • Batch and scheduled integration.
  • Data reconciliation.
  • Integration logging and auditing.
  • External agency data exchanges.
  • Experience with Cloverleaf or another enterprise integration/message engine should be clearly identified on the resume.

Data / Database Engineering Experience: Candidates should demonstrate significant experience with:
  • Enterprise Oracle databases.
  • SQL and PL/SQL development.
  • Complex stored database logic.
  • Data warehouse architecture.
  • Database schemas and data models.
  • High-volume transactional and analytical data.
  • Query and database performance tuning.
  • Data quality and validation.
  • Data consolidation.
  • Data transformation.
  • Master data.
  • Entity/identity resolution.
  • Database troubleshooting.
  • Production database support.
  • Data migration and conversion.
  • Batch-processing workflows.
  • Data retention and historical information.

Production Support / M&O Experience: Because this is an established mission-critical system environment, candidates must be comfortable performing maintenance and operations (M&O)rather than exclusively new development.
Candidates should have experience:
  • Supporting mature enterprise applications and databases in production.
  • Troubleshooting complex production incidents.
  • Performing root-cause analysis.
  • Supporting legacy and current technologies simultaneously.
  • Diagnosing data and interface problems across multiple systems.
  • Monitoring production jobs, interfaces, queues, databases, and middleware.
  • Correcting or reprocessing failed data transactions.
  • Supporting upgrades, patches, deployments, and configuration changes.
  • Working within formal incident, problem, change, and release-management processes.
  • Supporting systems where availability, accuracy, security, and data integrity are critical.

Preferred Qualifications:
  • Extensive professional experience in data engineering, database engineering, systems integration, middleware engineering, or related enterprise technology roles.
  • Senior-level hands-on Oracle SQL/PLSQL experience.
  • Significant experience supporting complex production/M&O environments.
  • Experience with message-oriented middleware and enterprise integration platforms.
  • Experience with IBM MDM or comparable master-data-management technology.
  • Experience with AIX/UNIX-based enterprise systems.
  • Experience supporting government or other highly regulated systems.
  • Experience working with sensitive or restricted information.
  • Strong analytical and production-troubleshooting capabilities.
  • Ability to understand complex existing data flows and integrations with limited documentation.
  • Strong written and verbal communication skills.

Preferred Government Experience:
  • Candidates with experience supporting Los Angeles County, California state or local government, CA DOJ, law enforcement, courts, probation, corrections, or other criminal-justice/public-safety agencies are strongly encouraged to apply.
  • Prior direct experience with CCHRS, PIX/Cloverleaf, JDIC, CA DOJ ACHS, IBM MDM, or comparable criminal-history data integration environments is especially valuable.

Engagement:
  • Employment Type: W2 Contract.
  • Duration: Long-term engagement anticipated; approximately 2–5+ years.
  • Candidates must be able to successfully complete required background and security screening.
  • Some production maintenance, deployments, upgrades, patches, or emergency support activities may occur outside normal business hours, including evenings or weekends.

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About Estrada Consulting

Sourced by ZipRecruiter

We’re a purpose-driven consulting company that will help your organization solve business challenges and build for the future. Our team is equipped to rise to the most challenging environments and bring fresh, innovative approaches to problem solving. We have brought together a senior team of experts that bring their shared experiences and insights across industries, disciplines, and markets to each and every engagement.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Sacramento, CA, US

Year founded

2000

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