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Developer Jobs in Belleville, IL (NOW HIRING)

Stifel

Developer II

Saint Louis, MO · On-site

The Developer II will begin to learn cross-disciplinary development skills in a full-stack environment. The Developer II will ensure that Stifel's best practices are used in all development projects ...

Atria Group LLC

Java Developer

Saint Louis, MO

$49.50 - $64.25/hr

Our company provides application analysis, design, development and programming, software engineering, systems development, testing, integration, and implementation, and management consulting services ...

Booz Allen Hamilton

Agentic AI Developer

O Fallon, IL · On-site

$99K - $225K/yr

R0241538 Agentic AI Developer The Opportunity: As an experienced engineer, you know that machine learning is critical to understanding and processing massive datasets. Your ability to conduct ...

Apex Informatics

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer Location: St Louis, MO * 10+ years of hands-on software engineering experience * Excellent hands-on experience in Java * Experience in developing REST services. * Experience in unit ...

The Timberline Group

Netsuite Developer

Saint Louis, MO · On-site +1

The Developer must have strong NetSuite customization experience, customer interfacing skills, and any web development and/or C# experience is a plus. Required Skills: * 5+ years NetSuite development

London Stock Exchange Group

DevOps Engineer

Saint Louis, MO · On-site

$51.25 - $70.25/hr

We are hiring a DevOps Engineer to own the delivery pipeline and operational automation for LSEG's internal observability platform - a high-ownership role with direct impact on how the platform gets ...

London Stock Exchange Group

DevOps Engineer

Saint Louis, MO · Remote

$51.25 - $70.25/hr

We are hiring a DevOps Engineer to own the delivery pipeline and operational automation for LSEG's internal observability platform - a high-ownership role with direct impact on how the platform gets ...

London Stock Exchange Group

DevOps Engineer

Saint Louis, MO · On-site

$49.50 - $67.75/hr

We are hiring a DevOps Engineer to own the delivery pipeline and operational automation for LSEG's internal observability platform - a high-ownership role with direct impact on how the platform gets ...

Chenega Corporation

ServiceNow Developer

Saint Louis, MO

$52.50 - $72/hr

ServiceNow Developer St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is ...

Chenega Corporation

ServiceNow Developer

Saint Louis, MO

$52.50 - $72/hr

Summary ServiceNow Developer St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional ...

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Showing results 21-40

All JobsDeveloper JobsDeveloper Jobs in Belleville, IL

Developer information

See Belleville, IL salary details

$38.9K

$125.6K

$154K

How much do developer jobs pay per year?

As of Aug 9, 2026, the average yearly pay for developer in Belleville, IL is $125,636.00, according to ZipRecruiter salary data. Most workers in this role earn between $103,000.00 and $152,500.00 per year, depending on experience, location, and employer.

What is the difference between Developer vs Software Engineer?

AspectDeveloperSoftware Engineer
CredentialsTypically requires a degree in computer science or related field, certifications varyOften requires a degree in computer science or software engineering, certifications may include Microsoft, AWS, etc.
Work EnvironmentWorks on coding, debugging, and implementing software applicationsDesigns, develops, tests, and maintains software systems, often involved in architecture decisions
Industry UsageCommonly used in tech companies, startups, and software firmsUsed across industries for system development, enterprise solutions, and software projects
Search & Comparison IntentPeople compare Developer with Software Engineer to understand roles and career paths

While both Developers and Software Engineers work on software projects, Developers primarily focus on coding and implementing features, whereas Software Engineers often take a broader role in designing and architecting software systems. The roles overlap significantly, but Software Engineers typically have a more comprehensive scope involving system design and engineering principles.

Is a developer still in demand?

Yes, developers are in high demand across many industries due to ongoing digital transformation and the need for software solutions. Skills in programming languages like Java, Python, and JavaScript, as well as experience with cloud platforms and agile development, enhance employability in this field.

What are some common challenges developers face when working on large-scale projects, and how can they overcome them?

Developers working on large-scale projects often encounter challenges such as coordinating with multiple team members, managing complex codebases, and ensuring consistent documentation. To overcome these obstacles, it's important to follow best practices like version control, code reviews, and regular communication through agile methodologies. Additionally, leveraging collaboration tools and maintaining clear documentation can help streamline workflows and minimize misunderstandings within the team.

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

To thrive as a Developer, you need strong programming skills in languages like Java, Python, or JavaScript, paired with a solid understanding of algorithms and software development principles, often supported by a degree in computer science or related field. Familiarity with version control systems (such as Git), integrated development environments (IDEs), and sometimes cloud platforms or specific frameworks is typical. Problem-solving ability, attention to detail, and effective communication are standout soft skills for this role. These competencies are crucial for building reliable, maintainable software and collaborating efficiently within development teams.

What is a developer?

A software developer—sometimes referred to as a software engineer, computer programmer, or computer scientist—designs and develops programs, applications, websites, and databases. Their responsibilities include creation, testing, and modification of the code that runs programs within IT systems. Software developers generally have a bachelor’s degree in computer science and are familiar with writing code in at least one programming language.

More about Developer jobs
What are the most commonly searched types of Developer jobs in Belleville, IL? The most popular types of Developer jobs in Belleville, IL are:
What are popular job titles related to Developer jobs in Belleville, IL? For Developer jobs in Belleville, IL, the most frequently searched job titles are:
What job categories do people searching Developer jobs in Belleville, IL look for? The top searched job categories for Developer jobs in Belleville, IL are:
What cities near Belleville, IL are hiring for Developer jobs? Cities near Belleville, IL with the most Developer job openings:
Developer jobs near you
Infographic showing various Developer job openings in Belleville, IL as of August 2026, with employment types broken down into 79% Full Time, 5% Part Time, 14% Contract, and 2% Nights. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution, with an average salary of $125,636 per year, or $60.4 per hour.

Developer II

Stifel

Saint Louis, MO • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 23 days ago

Stifel rating

8.3

Company rating: 8.3 out of 10

Based on 22 frontline employees who took The Breakroom Quiz

Job description

Why Stifel

Stifel strives for a culture that puts its clients and associates first: a culture where everyone belongs, everyone is welcome, and everyone contributes to the success of our clients, their careers, and the firm as a whole.

Let's talk about how you can find your place here at Stifel, where success meets success.

What You'll Be Doing

The Developer II will participate in all phases of the development process including design, integration and maintenance while observing proper behaviors, patterns, and standards. The Developer II will begin to learn cross-disciplinary development skills in a full-stack environment. The Developer II will ensure that Stifel's best practices are used in all development projects and procedures.

What We're Looking For

Work with Development team in various phases of development, including design, implementation, integration, revision control, release and the maintenance of multiple products and systems. Researches technical problems and suggests improvements for web applications. Assist in the development of procedures, including unit-testing, that can be utilized within continuous integration practices. Follow Stifel's coding and development standards. Document clearly and effectively within code as well as outside of code. Coordinate with other team members when tackling harder developmental efforts.

What You'll Bring

Displays awareness of the impact of actions on the business and acts in line with it. Ability to demonstrate proactive approach to problem resolution, strong troubleshooting and problem-solving skills. Collaboration with a team taking advantage of familiarity with appropriate development environments. Understanding of the software development life cycle (SDLC).

Education & Experience

Minimum Required: Bachelor's Degree in Computer Science or related field or equivalent experience Minimum Required: 2-4 years' of progressive experience in software development

Systems & Technology

Proficient in Microsoft Excel, Word, PowerPoint, Outlook Experience in C#/.NET (Core and Framework) or T-SQL on MS SQL Server Experience with Angular, AngularJS Experience with source control (like TFS and Git) #LI-JK1

#LI-JK1

About Stifel

Stifel is more than 130 years old and still thinking like a start-up.  We are a global wealth management and investment banking firm serious about innovation and fresh ideas.  Built on a simple premise of safeguarding our clients' money as if it were our own, coined by our namesake, Herman Stifel, our success is intimately tied to our commitment to helping families, companies, and municipalities find their own success.

While our headquarters is in St. Louis, we have offices in New York, San Francisco, Baltimore, London, Frankfurt, Toronto, and more than 400 other locations.  Stifel is home to approximately 9,000 individuals who are currently building their careers as financial advisors, research analysts, project managers, marketing specialists, developers, bankers, operations associates, among hundreds more.  Let's talk about how you can find your place here at Stifel, where success meets success.

At Stifel we offer an entrepreneurial environment, comprehensive benefits package to include health, dental and vision care, 401k, wellness initiatives, life insurance, and paid time off.

Stifel is an Equal Opportunity Employer.

Employment Type: FULL_TIME

What Stifel employees say

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