Overview: We have several openings at multiple levels (Jr-Sr). As a developer on our team, you will build software leveraging Esri's products and APIs to build core backend services that solve ...
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Overview: We have several openings at multiple levels (Jr-Sr). As a developer on our team, you will build software leveraging Esri's products and APIs to build core backend services that solve ...
We have several openings at multiple levels (Jr-Sr). This role focuses on cybersecurity engineering, risk management, and compliance across cloud and on-prem systems, supporting system authorization ...
Quick apply
We have several openings at multiple levels (Jr-Sr). This role focuses on cybersecurity engineering, risk management, and compliance across cloud and on-prem systems, supporting system authorization ...
We have several openings at multiple levels (Jr-Sr). The Geospatial Engineer supports mission-critical Intelligence Community and Department of Defense projects by designing, analyzing, and ...
Quick apply
We have several openings at multiple levels (Jr-Sr). The Geospatial Engineer supports mission-critical Intelligence Community and Department of Defense projects by designing, analyzing, and ...
C# Developer (Jr and Sr Roles)
$53 - $70/hr
Client is looking for a C# developer to assist a growing team to work on innovative and leading edge solutions. We are looking for someone to join an existing, motivated and productive development ...
C# Developer (Jr and Sr Roles)
$53 - $70/hr
Client is looking for a C# developer to assist a growing team to work on innovative and leading edge solutions. We are looking for someone to join an existing, motivated and productive development ...
Engineering Co-Op
Saint Louis, MO · On-site
BSME, BSEE or equivalent undergraduate study, SO, JR or early SR level * Able to work minimum 24 hours / week (40 preferred) * Experience with common shop hand tools * CAD experience (Pro Engineer ...
Engineering Co-Op
Saint Louis, MO · On-site
BSME, BSEE or equivalent undergraduate study, SO, JR or early SR level * Able to work minimum 24 hours / week (40 preferred) * Experience with common shop hand tools * CAD experience (Pro Engineer ...
Summer Engineering Co-Op
Saint Louis, MO · On-site
$16.25 - $21.25/hr
BSME, BSEE or equivalent undergraduate study, SO, JR or early SR level * Able to work minimum 24 hours / week (40 preferred) * Experience with common shop hand tools * CAD experience (Pro Engineer ...
Summer Engineering Co-Op
Saint Louis, MO · On-site
$16.25 - $21.25/hr
BSME, BSEE or equivalent undergraduate study, SO, JR or early SR level * Able to work minimum 24 hours / week (40 preferred) * Experience with common shop hand tools * CAD experience (Pro Engineer ...
BSME, BSEE or equivalent undergraduate study, SO, JR or early SR level * Able to work minimum 24 hours / week (40 preferred) * Experience with common shop hand tools * CAD experience (Pro Engineer ...
BSME, BSEE or equivalent undergraduate study, SO, JR or early SR level * Able to work minimum 24 hours / week (40 preferred) * Experience with common shop hand tools * CAD experience (Pro Engineer ...
Unqork Developer
Saint Louis, MO · On-site
AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate integrated/verticalized sector solutions in software, data, AI, network, and hybrid cloud infrastructure.
Unqork Developer
Saint Louis, MO · On-site
AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate integrated/verticalized sector solutions in software, data, AI, network, and hybrid cloud infrastructure.
Unqork Developer
Saint Louis, MO · On-site
AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate integrated/verticalized sector solutions in software, data, AI, network, and hybrid cloud infrastructure.
Unqork Developer
Saint Louis, MO · On-site
AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate integrated/verticalized sector solutions in software, data, AI, network, and hybrid cloud infrastructure.
REACT DEVELOPER
Saint Louis, MO · On-site
React Developer Location: St. Louis, MO (Onsite) Employment Type: Contract / Full-Time We are seeking a highly skilled React Developer responsible for designing, developing, and delivering scalable ...
REACT DEVELOPER
Saint Louis, MO · On-site
React Developer Location: St. Louis, MO (Onsite) Employment Type: Contract / Full-Time We are seeking a highly skilled React Developer responsible for designing, developing, and delivering scalable ...
The developer's primary responsibilities are to analyze, design, implement and test customized software applications. The developer will have a strong knowledge of software development and design and ...
The developer's primary responsibilities are to analyze, design, implement and test customized software applications. The developer will have a strong knowledge of software development and design and ...
Telephony/IVR Developer
Saint Louis, MO · On-site
6+ month with potential to Convert or Extend Remote - Must reside in US Qualifications/Skills Needed: -The developer needs to be an experienced IVR developer with AWS Connect experience. • The ...
Telephony/IVR Developer
Saint Louis, MO · On-site
6+ month with potential to Convert or Extend Remote - Must reside in US Qualifications/Skills Needed: -The developer needs to be an experienced IVR developer with AWS Connect experience. • The ...
NET Software Developer / Software Engineer / Web Application Developer MarketVolt, LLC, a digital marketing software and services firm based in St. Louis, seeks a creative software developer who can ...
NET Software Developer / Software Engineer / Web Application Developer MarketVolt, LLC, a digital marketing software and services firm based in St. Louis, seeks a creative software developer who can ...
Software Developer
Saint Louis, MO · On-site
NET Software Developer / Software Engineer / Web Application Developer MarketVolt, LLC, a digital marketing software and services firm based in St. Louis, seeks a creative software developer who can ...
Software Developer
Saint Louis, MO · On-site
NET Software Developer / Software Engineer / Web Application Developer MarketVolt, LLC, a digital marketing software and services firm based in St. Louis, seeks a creative software developer who can ...
Java Developer
$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 ...
Java Developer
$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 ...
Java Developer
Saint Louis, MO · On-site
$49.50 - $64.25/hr
Java Developer Location: St. Louis, MO Strong Programming skills (OOP, SOLID, 12-factor). Java is preferred. Experience with distributed systems design and architecture Strong experience with CI/CD ...
Java Developer
Saint Louis, MO · On-site
$49.50 - $64.25/hr
Java Developer Location: St. Louis, MO Strong Programming skills (OOP, SOLID, 12-factor). Java is preferred. Experience with distributed systems design and architecture Strong experience with CI/CD ...
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 ...
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 ...
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 ...
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 ...
Java Developer
$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 ...
Java Developer
$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 ...
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 ...
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 ...
Jr Developer information
See Alton, IL salary details
$23.1K - $33K
1% of jobs
$33K - $42.9K
2% of jobs
$42.9K - $52.8K
6% of jobs
$52.8K - $62.8K
14% of jobs
$63.3K is the 25th percentile. Wages below this are outliers.
$62.8K - $72.7K
34% of jobs
$80.5K is the 75th percentile. Wages above this are outliers.
$72.7K - $82.6K
23% of jobs
$82.6K - $92.5K
5% of jobs
$92.5K - $102.5K
6% of jobs
$102.5K - $112.4K
4% of jobs
$112.4K - $122.3K
3% of jobs
$122.3K - $132.2K
1% of jobs
$23.1K
$85.6K
$132.2K
How much do jr developer jobs pay per year?
As of May 29, 2026, the average yearly pay for jr developer in Alton, IL is $85,560.00, according to ZipRecruiter salary data. Most workers in this role earn between $64,400.00 and $83,700.00 per year, depending on experience, location, and employer.
What are the key skills and qualifications needed to thrive as a Jr Developer, and why are they important?
To thrive as a Jr Developer, you need a foundational understanding of programming languages (such as JavaScript, Python, or Java), basic software development principles, and often a relevant degree or coding bootcamp certification. Familiarity with version control systems like Git, IDEs, and workflow tools like Jira or Trello is typically required. Strong problem-solving skills, effective communication, and eagerness to learn help Jr Developers stand out in the workplace. These abilities are crucial for efficiently contributing to team projects, adapting to new technologies, and growing within a dynamic development environment.
What are some common challenges a Jr Developer might face when joining a new team, and how can they overcome them?
As a Jr Developer, one of the most common challenges is adapting to unfamiliar codebases and workflows. It can be daunting to understand existing projects and navigate team-specific tools and processes. To overcome this, Jr Developers should proactively seek help from team members, take thorough notes, and dedicate time to reviewing documentation and code. Embracing code reviews and asking questions will not only accelerate learning but also help build relationships within the team.
What are Jr Developers?
Jr Developers, or Junior Developers, are entry-level professionals in the software development field. They typically have less experience than mid-level or senior developers and are responsible for writing, testing, and maintaining code under the guidance of more experienced team members. Jr Developers often work on smaller tasks, bug fixes, or simple features, and are expected to learn and grow their technical skills through mentorship and hands-on experience. Their role is essential for building a solid foundation in software development and contributing to the success of development projects.
What is the difference between Jr Developer vs Junior Software Engineer?
| Aspect | Jr Developer | Junior Software Engineer |
|---|---|---|
| Required Credentials | Typically an associate degree or coding bootcamp certification | Usually a bachelor's degree in computer science or related field |
| Work Environment | Entry-level, supervised tasks, learning-focused | Similar entry-level environment, often with more complex project involvement |
| Employer & Industry Usage | Common in tech companies, startups, and IT departments | Used interchangeably in many companies, especially in software development teams |
| Search & Comparison Intent | Yes, often compared for entry-level roles | Yes, often searched as a more formal or technical title |
While both roles are entry-level software development positions, a Jr Developer often emphasizes basic coding tasks and learning, whereas a Junior Software Engineer may involve more structured engineering responsibilities. The titles are frequently used interchangeably, but understanding the specific job description can clarify expectations.
What cities near Alton, IL are hiring for Jr Developer jobs? Cities near Alton, IL with the most Jr Developer job openings:
Full-time
This job post has expired today. Applications are no longer accepted.
Job description
Overview: We have several openings at multiple levels (Jr-Sr). As a developer on our team, you will build software leveraging Esri’s products and APIs to build core backend services that solve complex problems at a global scale. From building intuitive AI web interfaces to writing Python for geoprocessing tools and AI agents, you’ll be exposed to the full development lifecycle and cutting-edge GIS solutions.
Responsibilities:
- Build backend services that power geospatial processing, automation, and user-facing capabilities
- Develop APIs, proxies, and integration services using Node.js and Python
- Create and maintain backend tooling that extends ArcGIS Enterprise in containerized environments
- Develop and maintain geoprocessing services, automation scripts, and operational workflows
- Build connectors and ingestion pipelines across diverse enterprise data sources
- Support deployments across cloud-native and on-prem environments
- Improve reliability and performance through API design, testing, monitoring, and observability
- Collaborate with platform, DevOps, and GIS teams to translate requirements into production solutions
Requirements:
- US citizenship with Active or Current TS/SCI clearance
- 2+ years of industry experience as a backend software engineer or equivalent practical experience
- Hands-on experience developing backend services using:
- Python
- JavaScript / Node.js
- Java (for enterprise integrations and services)
- Experience designing and building REST APIs and service-based architectures
- Experience extending or integrating with ArcGIS Enterprise or similar enterprise geospatial platforms
- Familiarity with:
- Geoprocessing workflows
- Proxies and middleware services
- Automation of GIS or data processing tasks
- Experience working in containerized environments (Docker, Kubernetes, or similar)
- Solid fundamentals in:
- API design
- Software/system design
- Testing and debugging distributed services
- Strong problem-solving, communication, and collaboration skills
- Bachelor’s degree in computer science, engineering, GIS, or related technical field (or equivalent practical experience)
Preferred Qualifications:
- Master's in Computer Science, Mathematics, Geographic Information Systems (GIS), or Stem related field
- Esri certification
- CompTIA Security + certification
- Experience with containerization technologies such as Docker and Kubernetes
- Familiarity with cloud platforms (Azure, AWS, or GCP)
- Experience with monitoring, logging, and observability tools
- Exposure to DevSecOps practices and secure development pipelines
- Experience with ArcGIS Enterprise SDKs, automation frameworks, or platform extensions
- Experience building services for geospatial analysis, data pipelines, or map services
- Familiarity with enterprise authentication, proxies, and secure service architectures
- Experience with relational and spatial databases (PostgreSQL/PostGIS, SQL Server, etc.)
- Exposure to event-driven architectures, batch processing, or distributed data workflows