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Web Application Developer Ii Jobs in O Fallon, IL

Sonsoft Inc

UI Developer

Saint Louis, MO · On-site

$48.50 - $63.25/hr

At least 2 years experience in Production support and performance engineering. * At least 1 year of experience in Responsive Web Design * At least 1 year of experience in Single Page Application ...

Sonsoft Inc

UI Developer

Saint Louis, MO · On-site

$48.50 - $63.25/hr

At least 2 years experience in Production support and performance engineering. * At least 1 year of experience in Responsive Web Design * At least 1 year of experience in Single Page Application ...

Cognizant Technologies

C++ developer

Saint Louis, MO · On-site

$47.75 - $64.25/hr

... web application services, ERP, and BI implementations by providing proven and experienced ... C++ developers with Telecom. Location: St. Louis, MO Duration: 6+ Months Contract ONLY EAD GC, GC ...

Varsity Tutors

Web Development Tutor

Saint Louis, MO · Remote

$18 - $40/hr

... application building to support students from HTML beginners through advanced developers building ... stack web applications. * Effective Teaching Methods: Ability to identify concepts students ...

Omni Federal

Software Developer Lead

Saint Louis, MO · On-site

$112K - $141K/yr

Software Developer Lead Location: HYBRID, St. Louis, MO (2x a week on-site) Security Clearance ... Lead a team and development efforts for a Geospatial web application deployed to multiple security ...

The Timberline Group

Engineering Tech Lead

Saint Louis, MO · On-site +1

$99K - $131K/yr

... web application * Prior experience in a senior engineer or architect role * Experience with Agile / SCRUM methodologies * Expertise in at least one of the following areas: PHP, Service Oriented ...

The Timberline Group

Angular Developer

Saint Louis, MO · On-site

$53.25 - $65.25/hr

Require Qualifications: * 3+ years of solid, hands-on web application development experience in a professional environment * Strong front-end / UI development skills: 2+ years JavaScript development ...

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All JobsWeb Application Developer Ii JobsWeb Application Developer Ii Jobs in O'Fallon, IL

Web Application Developer Ii information

See O Fallon, IL salary details

$20.5K

$91.9K

$142.7K

How much do web application developer ii jobs pay per year?

As of Aug 10, 2026, the average yearly pay for web application developer ii in O'Fallon, IL is $91,894.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,700.00 and $111,500.00 per year, depending on experience, location, and employer.

How does a Web Application Developer II typically collaborate with designers and backend developers during a project?

As a Web Application Developer II, you will often act as a bridge between UI/UX designers and backend developers. You’ll work closely with designers to translate wireframes and mockups into interactive, functional web components, ensuring design fidelity and usability. Simultaneously, you’ll collaborate with backend teams to integrate APIs, manage data flow, and troubleshoot issues that arise during development. Effective communication and teamwork are crucial in this role, as you’ll regularly participate in stand-ups, code reviews, and sprint planning sessions to ensure seamless project delivery.

What does a Web Application Developer II do?

A Web Application Developer II is a mid-level software professional who designs, develops, tests, and maintains web-based applications. They work closely with other developers, designers, and stakeholders to implement new features, optimize performance, and fix bugs. This role typically requires a solid understanding of programming languages like JavaScript, HTML, and CSS, along with backend technologies such as Node.js, PHP, or Python. Web Application Developer IIs are also expected to follow best coding practices and may mentor junior developers.

What are the key skills and qualifications needed to thrive as a Web Application Developer II?

To thrive as a Web Application Developer II, you need strong proficiency in programming languages such as JavaScript, HTML, CSS, and backend frameworks, often supported by a relevant degree or equivalent experience. Familiarity with version control systems like Git, cloud platforms, and modern development tools such as React or Angular is typically required. Effective problem-solving, collaboration, and communication skills help developers excel in team-based environments and adapt to changing project needs. These skills ensure the timely delivery of robust, user-friendly web applications and facilitate seamless teamwork in dynamic tech settings.
What are popular job titles related to Web Application Developer Ii jobs in O'Fallon, IL? For Web Application Developer Ii jobs in O'Fallon, IL, the most frequently searched job titles are:
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Web Application Developer Ii jobs near you
Infographic showing various Web Application Developer Ii job openings in O'Fallon, IL as of August 2026, with employment types broken down into 82% Full Time, 14% Part Time, and 4% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $91,894 per year, or $44.2 per hour.

C# Web Developer

Sovereign Technologies

Saint Louis, MO • On-site

Full-time

Re-posted 9 days ago

Job description

Company Description

Sovereign Technologies is an USA based information technology consulting and software services firm providing cost effective services and solutions to clients in North America and Asia Pacific.

Job Description

As a Web Developer, work with members of a Scrum / Agile project team to develop the site concept, interface design, and architecture of the company website. Under general direction, you will design, develop, troubleshoot, debug, and implement software code such as C#, HTML, ASP.net, JavaScript, and .Net and VB.Net for various website applications and components.

Specific duties in this role will include:

  • Programming in a thin GUI interface
  • Understanding and connecting to a normalized SQL structure
  • Detailing and documenting user specifications
  • Ensuring optimal user functionality
  • Following detailed systems procedures
  • Coordinating with other IT team members to complete projects
  • Researching software solutions
  • Communicating with end users
  • Providing training to other developers on various web-based applications as needed
Qualifications
  • Bachelor's Degree in Computer Science or equivalent work experience
  • 2-5 years' experience
  • Experience in C# and .NET; background working with HTML, ASP.net, Access, and JavaScript, preferred
  • Understanding of ODBC and directory structures
  • Strong multitasking and prioritization skills
  • Experience with Microsoft PC operating systems and MS Office products
Additional Information

As a Web Developer, you must be highly motivated and organized, with a strong comfort level programming in both C# and .NET. You must also be able to work effectively as part of a team in an Agile / Scrum environment and to easily get up to speed on in-progress projects. It is also important that you display excellent verbal and written communication and interpersonal skills, as well as a strong desire to develop and expand your current development skill sets.

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