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Developer Jobs in O Fallon, MO

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Senior C# .NET Developer The Timberline Group

Saint Louis, Missouri

This full-time position will challenge you to find creative ways to solve problems, explore new technologies, and everyone is expected to contribute at every level of the development process regardless of their position. The primary role of this experienced individual will be to develop software solutions through the conception, development, testing and implementation phases.

30+ days ago

Mid-Level C# .NET Software Developer The Timberline Group

Saint Louis, Missouri

NET Framework 4 or higher - 3+ years’ experience · SQL Databases – 3+ years’ experience · Web API or WCF – 3+ years’ experience · Experience with Entity Framework · Experience with Writing Unit Tests · Experience with Windows Services · Frontend UI JS Framework experience Preferences: · SSRS Reports Experience a plus · Agile Experience a plus · Visual Studio 2017 or higher Experience a plus · TFS 2017 Experience a plus · Micro Services development Experience a plus · PCI compliance environment Experience a plus Education / Other Experience: · Bachelor’s degree in Engineering, Computer Science, Mathematics or scientific discipline or equivalence experience What can we offer? You will have the opportunity to utilize a wide range of new development technologies while performing full life-cycle development of new projects as well as upgrading existing projects.

30+ days ago

WordPress Developer, Engineering The Timberline Group

Saint Louis, Missouri

Working closely with business, product and engineering resources to achieve the best possible results in web projects from conception through delivery. Comfortable working with browser debugging tools found in Chrome, Firefox and Edge, as well as debugging proxy tools such as Fiddler.

30+ days ago

Intermediate level C# Developer The Timberline Group

Saint Louis, Missouri

We are looking for an intermediate level developer (4 to 5 years experience in full stack development). The candidate should be familiar with: Developing SPA (Single Page Applications).

30+ days ago

Mid Level .Net Developer The Timberline Group

Saint Louis, Missouri

Our team is a growing group of software developers dedicated to creating great software and growing the value of the company. If you are a good fit for our team, you will: Be capable of owning problems and working with others to solve them.

30+ days ago

.NET Software Developer - Mid to Sr. Level The Timberline Group

Saint Louis, Missouri

NET experience a plus •Entity Framework experience a plus •Unit Testing experience a plus •Visual Studio 2015 experience a plus •TFS experience a plus Education / Other Experience: •College Degree a plus •Microsoft Developer Certification a plus •Point of Sale Application Development experience a plus •Mid-Tier Financial Transaction System Development experience a plus •Kiosk Development experience a plus NET OR Web Services / WCF a plus •Net Framework 4.0 or higher a plus •Agile experience a plus •WPF experience a plus •SQL Server experience a plus •DB2 experience a plus •ADO.

30+ days ago

.Net - Angular/C# Developer (Senior and Mid-Level) The Timberline Group

Saint Louis, Missouri

Use of good interpersonal skills to communicate requirements and constraints to both customer and operations (server, networking, client) groups. This full-time position will challenge you to find creative ways to solve problems, explore new technologies, and everyone is expected to contribute at every level of the development process regardless of their position.

30+ days ago

Openstack Developer The Timberline Group

Saint Louis, Missouri

Required skills - Domain knowledge - Cloud SDN, Networking, Virtualization and Containerization Development Experience – Dev in Opensource community e.g. Experience developing HTTP APIs (REST and/or GraphQL) that serve up data in an open source technology, preferably in a cloud environment.

30+ days ago

Java Developer The Timberline Group

Saint Louis, Missouri

Nice to haves: XML / XSLT JavaScript / HTML / CSS SQL / Microsoft SQL Server 2008 / Oracle DB / GIT / HTML / JavaScript / Cascading Style Sheets / CSS / JBOSS, Proficient knowledge of Java & J2EE (including JSP, EJB, JDBC, SQL, XML, HTML and associated technologies) and the use of those technologies in n-tier development environments.

30+ days ago

Developer C# .Net The Timberline Group

Saint Louis, Missouri

You will have the opportunity to utilize a wide range of new development technologies while performing full life-cycle development of new projects as well as upgrading existing projects for our clients. Job Responsibilities: Develop user interfaces for mobile and desktop applications that communicate with external web services.

30+ days ago

Principal/Lead Java Developer The Timberline Group

Saint Louis, Missouri

Principal Java Developer/Team Lead to serve as the senior developer on a team working to create the next generation back end data analytics platform designed to deliver high quality data analytics to our application development teams to be used in transforming the delivery of care for our customers. In the Team Lead role the candidate will develop all application architectures and coding practices for a team of approximately 8 developers in addition to working closely with the business stakeholders to translate business requirements into working designs.

30+ days ago

C# .NET Developer - Mid Level The Timberline Group

Saint Louis, Missouri

Enhancements for existing Applications & Services.•Design and Estimate technical solutions per project requirements.•Work with stakeholders & BA on defining project requirements.•Participate in application QA and deployment.•Participate in investigating and solving production issues. You will have the opportunity to utilize a wide range of new development technologies while performing full life-cycle development of new projects as well as upgrading existing projects for our clients.

30+ days ago

Entry level C# Developer The Timberline Group

Saint Louis, Missouri

We are seeking an entry level developer (less than 2 years of full stack development experience). The candidate should be familiar with developing web applications using: C#.

30+ days ago

Front End Developer - Angular The Timberline Group

Saint Louis, Missouri

This position will be responsible for building products, supporting experiences and services, delivering in a fast, agile, and reliable manner with high quality and low technical debt. The Front End Developer will help build and scale a combination of self-service tools and customer-facing services, rapid UI experimentation and analytics UI interfaces.

30+ days ago

Maintenance Install Business Developer BrightView Landscapes

Maryland Heights, MO

Full time

The Landscape Maintenance Installation Business Developer is responsible for driving new business growth by identifying, pursuing, and securing contracts for small scale landscape construction services and installation projects. This role requires a strong balance of sales expertise, industry knowledge, and relationship management to expand the client base, increase revenue, and ensure long-term customer satisfaction.

28 days ago

SQL Server Developer Apolis

St, Louis, MO

$60–$70 / hour
Quick Apply

This role demands strong analytical skills, attention to detail, and the ability to work collaboratively with cross-functional teams. The ideal candidate will have hands-on experience in SQL development, ETL processes, and reporting tools like SSRS and SSIS.

30+ days ago

Full Stack Developer Viper Staffing Services

Saint Louis, Missouri

You will be responsible for creating and modifying computer application software or specialized utility programs. Previous experience in software development, computer engineering, or other related fields.

30+ days ago

MES Application Developer FuseGlobal

St. Louis, MO

40% - Working as a development team member design and develop application deliverables for new MES implementations and/or changes to existing MES applications using a comprehensive understanding of modern software implementation methodologies. Demonstrated experience with Java, C++, C#, Net Framework, HTML, JSP/CSS, Tomcat, IIS, JavaScript, Swing, ORM Frameworks (ex.

30+ days ago

Java Developer TalentBridge

Maryland Heights, MO

Quick Apply

This role is ideal for a mid-level Java developer with 3-4 years of experience who is eager to continue building technical expertise and growing within a collaborative engineering environment. Successful candidates will be proactive learners who are comfortable asking questions, seeking clarity when needed, and independently driving tasks to completion.

30+ days ago

Senior Salesforce Developer The Giant Bullseye

Saint Louis, Missouri

This role involves coordinating seasonal releases and sandbox refreshes while contributing to mission-critical enhancements. We are looking for a skilled Senior Salesforce Developer to join our team and support key platform initiatives.

30+ days ago

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Developer Jobs in O Fallon, MO

Senior C# .NET Developer The Timberline Group

Mid-Level C# .NET Software Developer The Timberline Group

WordPress Developer, Engineering The Timberline Group

Intermediate level C# Developer The Timberline Group

Mid Level .Net Developer The Timberline Group

.NET Software Developer - Mid to Sr. Level The Timberline Group

.Net - Angular/C# Developer (Senior and Mid-Level) The Timberline Group

Openstack Developer The Timberline Group

Java Developer The Timberline Group

Developer C# .Net The Timberline Group

Principal/Lead Java Developer The Timberline Group

C# .NET Developer - Mid Level The Timberline Group

Entry level C# Developer The Timberline Group

Front End Developer - Angular The Timberline Group

Maintenance Install Business Developer BrightView Landscapes

SQL Server Developer Apolis

Full Stack Developer Viper Staffing Services

MES Application Developer FuseGlobal

Java Developer TalentBridge

Senior Salesforce Developer The Giant Bullseye

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