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Junior Developer Jobs in Alton, IL (NOW HIRING)

Automationtechies

Control Engineer

Saint Louis, MO · On-site

$81K - $105K/yr

You should be comfortable leading or supporting technical teams, mentoring junior engineers, and traveling to customer sites for startup and troubleshooting activities. Reasons you will be excited to ...

WSP

Senior Electrical Engineer - Buildings

Saint Louis, MO · On-site

$104K - $136K/yr

Serve as a technical resource and provide guidance to junior engineers and designers. * Prepare and oversee engineering calculations, technical specifications, reports, studies, and construction ...

Chenega Corporation

Lead ServiceNow Developer

Saint Louis, MO · On-site

$52.50 - $72/hr

... junior developers, collaborate across engineering teams, and serve as the senior escalation point for complex technical challenges. Responsibilities * Lead hands-on development within the ServiceNow ...

WSP

Senior Electrical Engineer - Buildings

Saint Louis, MO · On-site

$104K - $136K/yr

Serve as a technical resource and provide guidance to junior engineers and designers. * Prepare and oversee engineering calculations, technical specifications, reports, studies, and construction ...

CACI

Senior Application Developer

Saint Louis, MO · On-site

$75K - $158K/yr

Mentor mid-level and junior developers and contribute to engineering standards. Qualifications: Required: Bachelor's degree in Computer Science, Software Engineering, or a related technical ...

Actalent

Process Engineer

Saint Louis, MO

Support knowledge transfer by sharing technical insights and, when applicable, mentoring junior engineers or technicians in process-related activities. * Ensure adherence to GMP documentation ...

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All JobsDeveloper JobsJunior Developer JobsJunior Developer Jobs in Alton, IL

Junior Developer information

See Alton, IL salary details

$23.1K

$85.6K

$132.2K

How much do junior developer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for junior 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 is a junior developer?

A Junior Developer is an entry-level software professional who assists in creating, testing, and maintaining software applications. They typically work under the supervision of more experienced developers, learning best practices and acquiring new technical skills on the job. Junior Developers are expected to write code, fix bugs, and contribute to project documentation while gradually gaining experience in software development processes. This role is ideal for recent graduates or individuals transitioning into the tech industry.

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

To thrive as a Junior Developer, you need a solid understanding of programming fundamentals, basic knowledge of software development life cycles, and ideally a degree in computer science or a related field. Familiarity with coding languages like JavaScript, Python, or Java, as well as version control systems such as Git, is commonly expected. Strong problem-solving abilities, eagerness to learn, and effective communication help you integrate into teams and adapt to new challenges. These skills are crucial for producing quality code, collaborating with colleagues, and growing within the fast-paced tech environment.

What are some common challenges faced by junior developers during their first year, and how can they overcome them?

Junior Developers often face challenges such as adapting to new codebases, understanding company workflows, and bridging the gap between academic knowledge and real-world applications. It’s common to feel overwhelmed by unfamiliar technologies or debugging complex issues. Overcoming these challenges involves proactively seeking mentorship, participating in code reviews, and consistently asking questions to clarify concepts. Building strong communication skills and collaborating with more experienced team members can also accelerate the learning process and help you grow more confident in your role.

What is the difference between Junior Developer vs Software Engineer?

AspectJunior DeveloperSoftware Engineer
Required CredentialsTypically an associate degree or bootcamp certificationBachelor's degree in Computer Science or related field
Work EnvironmentEntry-level, supervised tasks, learning-focusedMore complex projects, often with team leadership responsibilities
Employer UsageCommon in startups, small companies, internshipsUsed across industries, larger companies, and tech firms
Search & Comparison IntentUnderstanding entry-level roles, career startClarifying career progression, skill requirements

In summary, Junior Developers are entry-level roles focused on learning and supporting development tasks, often requiring minimal experience. Software Engineers typically have more experience, advanced skills, and handle complex projects, making them a step up in the software development career path.

How to get a job as a junior developer?

To get a job as a junior developer, build a strong foundation in programming languages like JavaScript, Python, or Java, and create a portfolio of projects to demonstrate your skills. Gaining experience through internships, coding bootcamps, or online courses can improve your chances, and applying to entry-level positions through job boards or company websites is essential.

What cities near Alton, IL are hiring for Junior Developer jobs?

Cities near Alton, IL with the most Junior Developer job openings:

Junior Developer jobs near you
Infographic showing various Junior Developer job openings in Alton, IL as of August 2026, with employment types broken down into 81% Full Time, 5% Part Time, 13% Contract, and 1% Nights. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $85,560 per year, or $41.1 per hour.

Control Engineer

Automationtechies

Saint Louis, MO • On-site

$81K - $105K/yr

Full-time

Medical, Dental, Vision, Retirement

Re-posted 14 days ago

Job description

Do you enjoy solving technical challenges and working with both programming and electrical/mechanical systems? Our client's Control Engineers design, develop, and commission automation solutions across a wide range of industries while working with cutting-edge technologies. Engineers in this position collaborate closely with clients, manage multiple projects, and contribute to both technical execution and customer relationships. The role is ideal for someone who thrives in a fast-paced consulting environment and enjoys learning new technologies while taking ownership of projects from concept through commissioning.

As a well-established engineering consulting firm with over 20 years in business, they are known for delivering innovative automation and custom software solutions for manufacturing, testing, and product development applications. You will gain exposure to a variety of industrial automation systems and technologies, including PLCs, HMI/SCADA platforms, motion control, robotics, and machine vision. You should be comfortable leading or supporting technical teams, mentoring junior engineers, and traveling to customer sites for startup and troubleshooting activities.

Reasons you will be excited to work here:

  • Project-based company that fosters ongoing exploration and growth
  • Every employee interfaces with customers, allowing you to develop sales, project management, and business development skills.
  • Full benefits package: Medical, Dental, Vision, Health savings and flex spending accounts, paid parental leave, 401K Matching, competitive salaries, profit sharing, and bonuses.
  • They foster an inclusive, collaborative team environment.
  • Work with a team of smart professionals.
  • Take part in many company-sponsored events and activities.

Key Responsibilities:

  • Develop and program automation applications using PLC, HMI, and SCADA platforms
  • Commission and troubleshoot electrical and mechanical systems at customer sites
  • Support system architecture design and full project lifecycle execution
  • Work directly with customers while managing project communication and deliverables
  • Mentor junior engineers and provide technical leadership
  • Continuously learn and apply new automation technologies and best practices

Qualifications:

  • Bachelor's degree in Electrical, Mechanical, Computer Engineering, or related field (REQUIRED)
  • 3-10 years of industrial automation experience
  • Must have a College GPA of  3.4 or higher (Might consider as low as 3.2 depending on work history and the university you attended)
  • Strong programming background, including object-oriented and text-based programming
  • Experience with PLCs, motion control, process control, robotics, machine vision, and SCADA systems
  • Ability to manage multiple projects and work directly with customers
  • Strong communication and proposal development skills
  • Willingness to travel approximately 25–40%

To comply with some state laws, the annual base salary range for this position has been provided. The range given is broad and should be considered as a guideline only. Our client will consider a candidate's work experience, education/training, key skills, the salaries of current employees in similar roles, and other factors when extending an offer.