Top 12 Developer ii Jobs in O'fallon, Il

Software Developer 2 (Associate)
UNCOMN —O'Fallon, IL
- $71,500 - $85,000 a year
- Azure
- Mid-level
- Java
- Paid holidays
- Health insurance
7d
Developer II
Stifel —St. Louis, MO
- Full-time
- Computer science
- Microsoft Outlook
- Computer Science
- Health insurance
- Dental insurance
Software II Developer
BJC HealthCare —St. Louis, MO
- $76,252.80 - $124,155.20 a year
- Full-time
- Computer science
- Computer Science
- Mid-level
- Disability insurance
- Health insurance
Cloud Engineer 2
UNCOMN —Scott AFB, IL
- $82,000 - $97,000 a year
- Computer Science
- Engineering
- System design
- Paid holidays
- Health insurance
Software Developer II - Connect Service Software (Front End, Angular)
National Information Solutions Cooperative (NISC) —St. Louis, MO
- Hybrid work
- Computer science
- Computer Science
- 5 years
- Health savings account
- Paid holidays
1d
Delivery Management Engineer II
Deloitte —St. Louis, MO
- $86,400 - $170,900 a year
- Full-time
- Azure
- Computer Science
- Up to 50% travel
Software Development Engineer II – Back-End (Mission-Focused | ArcGIS)
Esri —St. Louis, MO
- $97,240 - $162,240 a year
- Azure
- Computer Science
- System design
- Relocation assistance
Software Development Engineer II – CI/CD & Platform Automation (Mission-Focused)
Esri —St. Louis, MO
- $97,240 - $162,240 a year
- Azure
- Computer Science
- System design
- Relocation assistance
Software Engineer II - Remote
CSAA Insurance Services, Inc. —St. Louis, MO
- $41.07 - $54.76 an hour
- Full-time
- Remote
- Computer science
- Computer Science
- Mid-level
- 401(k) matching
3d
Software Development Engineer II- Back End
Esri —St. Louis, MO
- $97,240 - $162,240 a year
- Azure
- Computer Science
- System design
- Relocation assistance
Software Development Engineer II- CI/CD & Platform Automation Engineer (DevOps)
Esri —St. Louis, MO
- $97,240 - $162,240 a year
- Azure
- Computer Science
- System design
- Relocation assistance

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Full Stack Developer 2
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Full Stack Developer 2
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Software Developer 2 (Associate)

UNCOMN -
O'Fallon, IL

Apply Now

Job Details

$71,500 - $85,000 a year
7 days ago

Benefits

Paid holidays
Health insurance
Paid time off
Employee assistance program
401(k) matching
Benefits from day one

Qualifications

Software engineering
Implementing APIs
Developing and maintaining backend systems
Agile software development
Back-end integration

Full Job Description

At UNCOMN, we don’t just fix issues; we deliver secure solutions that power essential operations in both the public and private sectors. Our team tackles tough challenges—whether it’s improving organizational systems, streamlining logistics, or making sense of complex data—all with one goal: helping our clients succeed so they can continue serving others.

We’ve built a culture rooted in our Core Values, where innovation thrives, work-life balance is respected, and career growth is always encouraged. We're also proud to be recognized as a ‘Top Workplace,’ and that’s not just us talking; it’s our employees. Now, we’re looking for another Uncommon Genius to join our dynamic team. If you love solving puzzles, building new things, fixing what’s broken, or pushing the boundaries of creativity, we encourage you to explore the details of this position below!

UNCOMN is seeking a motivated and collaborative Software Developer 2 (Associate) to join our growing development team. In this role, you will help design, build, test, and maintain modern applications using Java, Microsoft Azure, and Agile development practices. This is an excellent opportunity for a developer who enjoys solving problems, learning new technologies, and contributing to mission-focused solutions in a team-oriented environment.

What You’ll Do

Design, develop, test, and maintain software applications using Java and Microsoft Azure technologies.
Build, enhance, and support RESTful APIs and backend services.
Participate in the full software development lifecycle, including requirements analysis, development, deployment, and ongoing support.
Collaborate with product owners, QA teams, and engineers to translate business requirements into technical solutions.
Write clean, maintainable, and well-documented code following established best practices.
Troubleshoot, debug, and optimize application performance.
Create and manage detailed Jira tickets while supporting a shared Agile workflow.
Participate in Agile ceremonies, including sprint planning, daily stand-ups, and retrospectives.
Contribute to peer code reviews and continuous improvement initiatives.

Requirements

2+ years of experience in software development, workflow analysis, stakeholder collaboration, and Agile environments.
Must be eligible to obtain a Secret clearance, granted by the U.S. Government, which requires U.S. citizenship. The government also uses 13 adjudicative guidelines to determine an individual's eligibility.
Experience developing backend services and working with RESTful APIs.
Strong problem-solving skills with a proactive mindset focused on delivering effective solutions.
Willingness to obtain relevant certifications based on future client or contract requirements.
Strong verbal and written communication skills, including the ability to explain technical concepts clearly.
Ability to thrive in a collaborative, team-oriented environment.

Preferred

Bachelor’s degree and/or CompTIA Security+ preferred.
Desire to learn and work with emerging technologies.

Why UNCOMN?

Instant Flexible PTO: Enjoy flexible paid time off starting your very first day with us!
Generous Holidays: Benefit from 7 paid holidays and up to 3 floating holidays annually.
Immediate Health Coverage: Get access to comprehensive health benefits from day one.
401K Safe Harbor Match: Secure your future with our top-tier 401K matching program.
Performance Bonus: Stand out and you could earn an annual performance bonus.
Growth Opportunities: Advance your career with our training and education assistance programs.
Free Employee Assistance Program (EAP): Access complimentary support services for you and your family.

Note: Benefits apply to full-time employees only.

Don’t meet every single requirement? We’re dedicated to building an uncommon, inclusive, and authentic workplace, so if you’re excited about this role but your experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyways. You may be just the right candidate for this or other roles.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, or national origin.

Apply Now

Refine Your Search

developer ii jobs in o'fallon, il

Software Developer 2 (Associate)

Developer II

Software II Developer

Cloud Engineer 2

Software Developer II - Connect Service Software (Front End, Angular)

Delivery Management Engineer II

Software Development Engineer II – Back-End (Mission-Focused | ArcGIS)

Software Development Engineer II – CI/CD & Platform Automation (Mission-Focused)

Software Engineer II - Remote

Software Development Engineer II- Back End

Software Development Engineer II- CI/CD & Platform Automation Engineer (DevOps)

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