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Entry Level Java Software Engineer Jobs in St Louis, MO

Phase2 Technology

Software Engineer, Mid

Saint Louis, MO · On-site

$69K - $158K/yr

Software Engineer, Mid The Opportunity As a full stack developer, you can resolve a problem with a ... Experience with Java, Python, JavaScript, React, and NodeJS * Experience developing software ...

Sigla, LLC

Software Engineer

Saint Louis, MO · On-site

... Java) and native iOS (Swift) development. We will mentor and train on these technologies as needed. Exploration and learning of new technologies beyond these will be encouraged and supported as well.

Sigla, LLC

Software Engineer

Saint Louis, MO · On-site

... Java) and native iOS (Swift) development. We will mentor and train on these technologies as needed. Exploration and learning of new technologies beyond these will be encouraged and supported as well.

w3r Consulting

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Responsible for performance engineering of the enterprise software architecture. * Significant code ... experience with Java, Spring Boot, gRPC - Good knowledge in creation and working with CI/CD ...

Mastercard

Software Engineer II - Mastercard

O Fallon, MO · On-site

$91K - $124K/yr

... Java and experience working with modern development tools and practices, including Git and CI/CD pipelines. • Solid understanding of software engineering principles, Agile methodologies, testing ...

Clearwing

Backend Java Developer

Chesterfield, MO · On-site

$50 - $64.75/hr

... software engineering of distributed systems using Java/J2EE as core set of technologies. The ... candidate should be comfortable working across all the tiers in the proposed solution: RDBMS, batch ...

Varsity Tutors

Java Tutor

Saint Louis, MO · Remote

$40/hr

Emphasizes clean code principles and test-driven development, connecting Java to web development, Android applications, and enterprise software engineering. * Curriculum Awareness & Adaptive ...

The Timberline Group

Java/Angular Developer

Saint Louis, MO · On-site +1

$49.50 - $64.25/hr

... other software developers, application and data architects, business analysts and other related ... Java/ Angular, J2EE, Servlets, XML * HTML, CSS, JavaScript, JQuery * JUnit, Mockito * Apache ...

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Entry Level Java Software Engineer information

See St Louis, MO salary details

$48.1K

$96K

$194.9K

How much do entry level java software engineer jobs pay per year?

As of Sep 10, 2026, the average yearly pay for entry level java software engineer in St. Louis, MO is $96,047.00, according to ZipRecruiter salary data. Most workers in this role earn between $61,200.00 and $99,700.00 per year, depending on experience, location, and employer.

What is an entry level Java software engineer?

An Entry Level Java Software Engineer is a beginner role in software development that focuses on building, testing, and maintaining applications using Java. Engineers in this position work under the guidance of senior developers to write code, debug programs, and collaborate with teams to develop software solutions. Typical responsibilities include understanding project requirements, writing efficient code, and learning best practices in software engineering. This role is ideal for recent graduates or those with foundational programming knowledge looking to start a career in Java development.

What does a typical day look like for an entry level Java software engineer?

As an Entry Level Java Software Engineer, your day often includes writing and debugging Java code, participating in daily stand-up meetings, and collaborating with senior developers or mentors on assigned tasks. You might work on implementing new features, fixing bugs, reviewing pull requests, and learning about development best practices and code standards. There's usually a mix of independent work and teamwork, with opportunities to ask questions, receive feedback, and build your technical skills. This structure is designed to help you gain experience while steadily expanding your responsibilities within the team.

What are the key skills and qualifications needed to thrive as an entry level Java software engineer?

To thrive as an Entry Level Java Software Engineer, you need a solid understanding of Java programming, object-oriented concepts, basic algorithms, and a relevant degree in computer science or a related field. Familiarity with tools such as IntelliJ IDEA or Eclipse, version control systems like Git, and awareness of popular frameworks such as Spring or Hibernate is typically expected. Strong problem-solving skills, attention to detail, a willingness to learn, and effective team communication will set you apart. These competencies help you quickly adapt to real-world software development environments, contribute to team projects, and build a successful engineering foundation.

What are the most commonly searched types of Java Software Engineer jobs in St. Louis, MO?

The most popular types of Java Software Engineer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Entry Level Java Software Engineer jobs?

Cities near St. Louis, MO with the most Entry Level Java Software Engineer job openings:

Entry Level Java Software Engineer jobs near you
Infographic showing various Entry Level Java Software Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 85% Full Time, 10% Part Time, 1% Temporary, and 4% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $96,047 per year, or $46.2 per hour.

Full Stack Software Engineer

Saint Louis, MO

Reinventing Geospatial, Inc. (RGi)
IT Services • 51 - 200 employees
Learn more about Reinventing Geospatial, Inc. (RGi)external

Full-time

Medical, Dental, Retirement, PTO

Re-posted 18 days ago

Key responsibilities

  • Develop, deploy, and maintain cloud-based services using AWS Lambda, EC2, and other core AWS services.

  • Write and maintain code in C#, Java, JavaScript/TypeScript, Python, and Shell scripting.

  • Create, document, and manage new and existing functionality in GitLab repositories.

Job description

Reinventing Geospatial (RGi) is a leading expert in geospatial solutions for Defense, Intelligence, and Federal clients. We enhance situational awareness for soldiers and analysts by integrating software development with geospatial intelligence. Our projects range from data collection to advanced deep learning, leveraging tools like Python, Java, and ArcGIS.
 
We don't just fill roles we build teams of high performers and leaders who make an immediate impact. At our core, we're driven by innovation and powered by people who work at the intersection of passion and performance. Here, you'll collaborate with bold thinkers, leverage cutting edge technology, and tackle meaningful challenges from day one.
 
Our culture is defined and anchored by three pillars:
 
Energy: We bring passion, purpose, and urgency to our work.
Edge: We take initiative, embrace growth, and step outside our comfort zone.
Execution: We get things done smartly, decisively, and with real results.
 
If you're the kind of person who leads with initiative, thrives in a fast-paced environment, and is eager to create real impact, we want you on our team.
 
Clearance:
Active Top Secret clearance with an ability to obtain SCI access and willingness to obtain CI Polygraph
US Citizenship Required 
 
*This job posting is for a potential upcoming opening, and we encourage interested candidates to apply for future consideration.
As a Full Stack Software Engineer, you will...
  • Develop, deploy, and maintain cloud-based services using AWS Lambda, EC2, and other core AWS services.
  • Write and maintain code in C#, Java, JavaScript/TypeScript, Python, and Shell scripting.
  • Create, document, and manage new and existing functionality in GitLab repositories.
  • Apply DevOps practices and tools to deliver new features within an Agile environment.
  • Participate in Agile ceremonies (standups, sprint planning, increment planning) using Jira and Confluence.
  • Perform system administration and modify existing GOTS code to integrate open-source software solutions into web applications.
  • Design and implement APIs and database integrations that interact with Redux and React frameworks.
  • Integrate open-source packages for data visualization and data filtering.
  • Ensure code quality by applying unit testing and build testing best practices across all development efforts.
  • Collaborate with team members to assess tickets, test functionality, and deliver features that meet User Story Acceptance Criteria.
Full Stack Software Engineer Qualifications...
  • Requires BS degree and 4+ years of prior relevant experience or Masters with 2+ years of prior relevant experience.
  • Must have an active Top Secret to be considered and ability to obtain TS/SCI clearance prior to start and willingness and ability to obtain a Polygraph
  • Minimum 3 years of experience with REACT or modern JavaScript framework.
  • Minimum 3 years of experience with Python, C# development framework
  • At least 3 years of experience with unit testing, continuous integration tools, and Gitlab version control
  • Proactive self-starter demonstrates a positive, willing attitude and excellent oral and written communication skills.
  • Experience in either software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment.
  • Organizational Skills: Can plan and prioritize work. Follows tasks to their logical conclusion and makes sure that everything has been done to the right standard. Good attention to detail.
  • Communications: Ability to communicate clearly and efficiently to team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context.
Additional Skills We'd Like to See:
  • AWS Developer Solutions Mindset
  • At least 3 years of experience with Linux and/or Windows system administration
  • At least 2 years of experience with DoD Aeronautical Datasets
  • At least 1 year of experience with AWS cloud formation templates
  • At least 1 year of experience with Node, NPM, Swashbuckle, REST API, Sass
  • AWS Solutions, Developer, DevOps certification
  • Team Collaboration tools (Jira, Confluence)
  • DOD 8570 Compliant Certification (Sec+)
Who we are:
Reinventing Geospatial, Inc. (RGi) is a fast-paced small business that has the environment and culture of a start-up, with the stability and benefits of a well-established firm. We solve complex problems within geospatial software development and national defense to make an Immediate Impact for our nation’s soldiers and analysts.

We pride ourselves on giving employees an exceptional life experience, where creativity thrives, and challenges are simply part of the fun. We provide truly excellent benefits, including:

·        100% paid employee healthcare & dental insurance
·        Paid parental leave
·        401k with matching
·        Escalating vacation time
·        Referral bonuses
·        Tuition reimbursement
·        Professional development training
·        Free beverages and snacks
·        Weekly catered lunches and breakfast on Fridays
 
Grow to be our next leader:
At RGi, fostering a strong and organic corporate culture is paramount and serves as a compass on the decisions we make and how we operate the company. We believe our culture of camaraderie, innovation, and collaboration reflects the caliber of our employees and their dedication to the mission of providing quality software to our customers. As such, we want our employees to feel empowered to seek growth and leadership opportunities within the company and position us to maintain our culture as we grow. RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company. If this is what you are looking for in a company, then you are what we are looking for in an employee.

Reinventing Geospatial, Inc. is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for all positions.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.