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Senior Integration Developer Jobs in Missouri (NOW HIRING)

Lightedge

Sr. AI Integration Engineer

Kansas City, MO · Hybrid

Our owned and operated facilities, integrated DR solutions, and premium compliant cloud choices make up a true Hybrid Cloud Solution Center. LightEdge annually undergoes third-party audits for ISO ...

Peraton

Integration Engineer

Arnold, MO · On-site

$135K - $216K/yr

Responsibilities Senior-level Integration Engineers are responsible for leading the development of program and project integration solutions across the enterprise and determining integration ...

Peraton

Integration Engineer

Arnold, MO · On-site

$135K - $216K/yr

Responsibilities Senior-level Integration Engineers are responsible for leading the development of program and project integration solutions across the enterprise and determining integration ...

Peraton

Integration Engineer

Arnold, MO · On-site

$135K - $216K/yr

Responsibilities Senior-level Integration Engineers are responsible for leading the development of program and project integration solutions across the enterprise and determining integration ...

Boeing

Senior Systems Integration Engineer

Hazelwood, MO · On-site

$136K - $185K/yr

Senior Systems Integration Engineer Company: Boeing Aerospace Operations The Boeing Company is seeking a Senior Systems Integration Engineer to serve as the systems engineer for the F-15 USAF ...

Lightedge

Sr. AI Integration Engineer

Kansas City, MO · On-site

$101K - $136K/yr

The Senior AI Integration Engineer plays a central role in building, integrating, deploying, and supporting AI-driven workflows across Lightedge's core operational and business systems. This position ...

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Senior Integration Developer information

See Missouri salary details

$20.2K

$110.7K

$160.4K

How much do senior integration developer jobs pay per year?

As of Aug 15, 2026, the average yearly pay for senior integration developer in Missouri is $110,672.00, according to ZipRecruiter salary data. Most workers in this role earn between $85,400.00 and $137,400.00 per year, depending on experience, location, and employer.

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

AspectSenior Integration DeveloperIntegration Engineer
CredentialsBachelor's in CS or related, often with certifications like MuleSoft, Dell BoomiBachelor's in CS or related, similar certifications
Work EnvironmentSoftware development teams, project-basedIT operations, system integration teams
Industry UsageTech, finance, healthcare, enterprise softwareTech, manufacturing, telecom, enterprise sectors
Search & ComparisonOften compared for seniority and technical scopeCompared for operational vs development focus

Senior Integration Developers typically focus on designing and leading complex integrations, requiring advanced coding and architecture skills. Integration Engineers often handle the implementation and maintenance of integrations, emphasizing operational support. Both roles share similar credentials but differ in scope and responsibilities, with Senior Integration Developers usually taking a more strategic and leadership role in integration projects.

What are the key skills and qualifications needed to thrive as a senior integration developer, and why are they important?

To thrive as a Senior Integration Developer, you need in-depth expertise in application integration, API development, and systems architecture, typically supported by a computer science degree and several years of relevant experience. Familiarity with integration platforms (such as MuleSoft, Dell Boomi, or IBM Integration Bus), cloud services, and proficiency in languages like Java or Python are common technical requirements. Strong problem-solving skills, effective communication, and the ability to collaborate across teams are essential soft skills in this role. These skills ensure seamless system interoperability, efficient data flow, and successful project delivery within complex enterprise environments.

How much do senior integration developers make?

Senior integration developers typically earn between $90,000 and $130,000 annually, depending on experience, location, and industry. They often have expertise in tools like MuleSoft, Dell Boomi, or Informatica and may hold certifications that can influence salary levels.

What are some common challenges faced by senior integration developers when working with multiple systems?

Senior Integration Developers often encounter challenges such as dealing with legacy systems that lack modern API support, managing data consistency across disparate platforms, and ensuring secure data transmission. Additionally, they must troubleshoot integration failures quickly to minimize business disruption and collaborate closely with other development, QA, and infrastructure teams. Staying current with evolving integration tools and best practices is also essential for delivering robust solutions.

What does a senior integration developer do?

A Senior Integration Developer is responsible for designing, developing, and maintaining solutions that enable different software systems to communicate and work together efficiently. They work with APIs, middleware, and integration platforms to connect diverse applications within an organization or with external partners. Their role often includes troubleshooting integration issues, ensuring data consistency, and optimizing performance. Additionally, they may mentor junior developers and collaborate with business stakeholders to understand integration requirements.

What are popular job titles related to Senior Integration Developer jobs in Missouri?

For Senior Integration Developer jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Senior Integration Developer jobs in Missouri look for?

The top searched job categories for Senior Integration Developer jobs in Missouri are:

What cities in Missouri are hiring for Senior Integration Developer jobs?

Cities in Missouri with the most Senior Integration Developer job openings:

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Senior Integration Developer jobs near you
Infographic showing various Senior Integration Developer job openings in Missouri as of August 2026, with employment types broken down into 91% Full Time, 4% Part Time, and 5% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $110,672 per year, or $53.2 per hour.

Senior Integration Developer

Amy Cell Talent

Saint Louis, MO • On-site, Remote

Full-time

Re-posted 27 days ago

Job description

Are you an engineering-minded consultant who loves diving into messy infrastructures, building what doesn't exist, and helping clients navigate mission-critical transformations? If so, read on!
About Us
If it's high-stakes, high-security, or highly complex-Oxalis is built for it. We're a consulting and technology partner for the organizations that keep the world running: life sciences, shipyards, government agencies, health systems, aerospace programs, and manufacturers with missions too critical to fail. We serve the people behind the mission-those building, healing, defending, and delivering where it matters most. As a Platinum Solution Partner for Atlassian and a trusted systems integrator for IFS, we specialize in secure cloud transformation, IT service management, ERP modernization, and Operational strategy. We focus especially on organizations navigating compliance-heavy environments and complex change.
About the Role
As a Senior Integration Developer, you will drive technical execution on complex enterprise engagements. When projects hit blockers - missing integrations, broken automations, gaps between what the platform supports and what the business needs - you solve them. That means writing scripts, building integrations from scratch, reverse-engineering configurations, and engineering your way through problems that off-the-shelf tooling can't handle.
You will work hands-on across the full engagement lifecycle: assessing environments, identifying technical risk, closing capability gaps, and validating outcomes. Over time, that technical credibility is what earns you the role of trusted advisor and modernization partner to client stakeholders - someone who can communicate decisions and tradeoffs clearly, and help organizations see a path forward when the technology gets complicated.
Key Responsibilities
Technical Execution & Problem Solving
  • Identify and resolve technical blockers across all phases of migration - from pre-migration assessment through post-cutover stabilization.
  • Reverse-engineer existing configurations, workflows, automations, and integrations to understand what must be rebuilt, replaced, or retired in the cloud.
  • Build custom tooling, scripts, and integrations where vendor-supported solutions fall short - owning the solution end to end.

Infrastructure & Systems Engineering
  • Windows and Linux environments - server administration, permissions management, service configuration, and troubleshooting.
  • SSH and remote access tooling to manage and diagnose infrastructure in hybrid and cloud environments.
  • Manage environment variables, startup scripts, daemons, and scheduled tasks across platforms.

Scripting, Automation & Development
  • Write and maintain scripts in Python, PowerShell, Bash, or comparable languages to support migration validation, data cleanup, and operational automation.
  • Build reusable accelerators and utilities that improve delivery efficiency across engagements.

Data, Integrations & APIs
  • REST and GraphQL APIs - interacting with platforms, extracting and transforming data, validating migration outcomes, and building or replacing integrations.
  • SQL - validating data integrity and migration accuracy.
  • Work with cloud-native integration patterns - webhooks, OAuth, event-driven architectures - to replace or redesign on-premises integrations.

Atlassian Platform & Migration
  • Own technical solutions and execution on Atlassian engagements - designing approaches, resolving blockers, and delivering outcomes hands-on.
  • Support Atlassian migrations by providing technical expertise alongside JCMA and CCMA tooling - stepping in where vendor solutions hit their limits.
  • Evaluate and mitigate technical risks related to scale, data integrity, performance, compliance, and user experience.
  • Plan and execute phased migrations, test migrations, cutover strategies, and rollback plans.
  • Identify and close technical gaps where Atlassian's native capabilities, Marketplace apps, or existing integrations don't meet business requirements - building solutions where none exist.

Stakeholder Communication
  • Translate technical decisions, risks, and tradeoffs into clear, actionable guidance for both technical teams and business stakeholders.
  • Own the technical narrative on your engagements - from readiness assessments through post-migration reviews.

Pre-Sales & Practice Growth
  • Support pre-sales engagements including migration assessments, solution design, estimates, and proposal contributions.
  • Contribute to Oxalis' migration methodologies, accelerators, and internal knowledge base.
  • Mentor consultants and share lessons learned across the practice.

About You
  • Extensive hands-on technical experience in enterprise environments.
  • Demonstrated client-facing consulting experience.
  • Linux and Windows systems administration - permissions, services, startup processes, and troubleshooting.
  • SSH and remote infrastructure management in hybrid or cloud environments.
  • REST and GraphQL APIs - building, consuming, and debugging integrations.
  • Python, PowerShell, Bash, or comparable languages - writing real, working code, not just modifying samples.
  • SQL - validating data integrity across migrations.
  • Ability to communicate technical decisions and tradeoffs clearly to non-technical stakeholders.
  • Bachelor's degree in Computer Science, Engineering, or a related technical field - or equivalent hands-on experience.

Preferred Qualifications
  • Hands-on experience with Atlassian products - Jira, Confluence, or Jira Service Management administration and configuration.
  • Exposure to Atlassian Cloud migrations and familiarity with JCMA and/or CCMA.
  • Atlassian Certified Professional or Associate certifications.
  • Experience with identity and access management - SSO, SAML, SCIM - in cloud environments.
  • Background in regulated or compliance-heavy environments (e.g., public sector, healthcare, aerospace and defense).
  • Experience with OAuth, webhooks, and event-driven integration patterns.
  • Familiarity with GraphQL tooling (e.g., Postman, Insomnia) or API gateway configurations.

Why Work for Us?
Join Oxalis and be part of a teamthat'stransforming how regulated industriesoperatethrough cutting-edge solutions. Here, leadership means driving innovation and owning your impact; empathy shapes our people-first culture; growth is constant; quality defines everything we deliver; and curiosity fuels our drive to solve complex challenges.
Location
We strongly prefer individuals living in or near Sacramento, CA; San Francisco, CA; Seattle, WA; Portland, OR; Austin, TX; and St Louis, MO, but will make exceptions for the right candidates.
Equal Opportunity Statement
Oxalis provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.
The posted salary range for this position is $105,000-$140,000.

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