Senior Integration Developer

Yeo & Yeo HR Advisory Solutions; St. Louis (MO); Hybrid; USD 105,000 - 140,000; Full time

Job summary

Oxalis is seeking a Senior Integration Developer to drive technical execution on complex enterprise engagements. You will write scripts, build integrations from scratch, and reverse-engineer configurations to meet business needs in secure cloud transformations.

You will work across the full engagement lifecycle, assess environments, identify risks, and communicate decisions clearly to stakeholders, becoming a trusted modernization partner.

Qualifications

• Extensive hands-on technical experience in enterprise environments.
• Demonstrated client-facing consulting experience.
• Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent hands-on experience.

Responsibilities

• 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.
• Own technical solutions and execution on Atlassian engagements — designing approaches, resolving blockers, and delivering outcomes hands‑on.
• Plan and execute phased migrations, test migrations, cutover strategies, and rollback plans.

Skills

REST & GraphQL APIs

Python

PowerShell

Bash

SQL

Jira

Confluence

Jira Service Management

OAuth

Webhooks

SCIM

Education

Bachelor's degree in Computer Science or related field

Tools

Jira

Confluence

Jira Service Management

Postman

Insomnia

OAuth

Webhooks

Job description

Are you anengineering‑mindedconsultant who loves diving into messy infrastructures, building whatdoesn’texist, and helping clients navigatemission‑criticaltransformations? If so, read on!

About Us

We’rea 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 enterpriseengagements. Whenprojectshit 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 toolingcan’thandle.

You will work hands‑on across the fullengagementlifecycle: assessing environments,identifyingtechnical risk, closing capability gaps, andvalidatingoutcomes. 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 tradeoffsclearly, andhelp organizations see a path forward when the technology gets complicated.

Key Responsibilities

Technical Execution & Problem Solving

• Identifyand 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,permissionsmanagement, service configuration, and troubleshooting.
• SSHand 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

• Writeandmaintainscripts inPython, PowerShell, Bash,or comparable languagesto support migration validation, data cleanup, and operational automation.
• Build reusable accelerators and utilities that improve delivery efficiency across engagements.

Data, Integrations & APIs

• REST andGraphQLAPIs— interacting with platforms,extractingand transforming data,validatingmigration 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 technicalexpertisealongside 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.
• Identifyand close technical gaps where Atlassian’s native capabilities, Marketplace apps, or existing integrationsdon’tmeet 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

• Extensivehands‑on technical experience in enterprise environments.
• Demonstratedclient-facing consulting experience.
• Linux and Windows systems administration— permissions, services, startup processes, and troubleshooting.
• SSHand remote infrastructure management in hybrid or cloud environments.
• REST andGraphQLAPIs— building, consuming, and debugging integrations.
• Python, PowerShell, Bash,or comparable languages — writing real, working code, not justmodifyingsamples.
• 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,aerospaceand defense).
• Experience with OAuth, webhooks, and event-driven integration patterns.
• Familiarity withGraphQLtooling (e.g., Postman, Insomnia) or API gateway configurations.

Why Work for Us?

Join Oxalis and be part of a teamthat’stransforming how regulated industriesoperatethroughcutting-edgesolutions. 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.