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Assistant Frontend Developer Jobs in St Louis, MO

Equifax, Inc.

Senior Full Stack Engineer

Saint Louis, MO · On-site

  • Medical

  • Retirement

  • PTO

... assistants like GitHub Copilot, Gemini, and accelerate innovation and build highly scalable ... This role requires a deep understanding of both front-end and back-end technologies, combined with ...

Equifax

Senior Full Stack Engineer

Saint Louis, MO · On-site

  • Medical

  • Retirement

  • PTO

... assistants like GitHub Copilot, Gemini, and accelerate innovation and build highly scalable ... This role requires a deep understanding of both front-end and back-end technologies, combined with ...

Equifax, Inc.

AI Engineer

Saint Louis, MO · On-site

$99K - $131K/yr

  • Medical

  • Retirement

  • PTO

... assistants like GitHub Copilot, Gemini, and accelerate innovation and build highly scalable ... This role requires a deep understanding of both front-end and back-end technologies, combined with ...

Equifax

AI Engineer

Saint Louis, MO · On-site

  • Medical

  • Retirement

  • PTO

... assistants like GitHub Copilot, Gemini, and accelerate innovation and build highly scalable ... This role requires a deep understanding of both front-end and back-end technologies, combined with ...

The Timberline Group

Dynatrace Engineer

Saint Louis, MO · On-site +1

This team does monitoring across IT - back and front-end. Application performance monitoring is ... CI/CD Pipeline: assist the team in taking ownership of and automating our CI/CD pipeline where ...

Infosys Limited Digital

Java Full stack Developer

Saint Louis, MO · On-site

$51 - $65.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... assist other similar projects Your contribution to the team: • A collaborative spirit and ... and frontend technologies. Preferred Skill and Experience • Experience in developing ...

CONCRETE STRATEGIES

Scheduling Intern

Saint Louis, MO

$28K - $32K/yr

... front end development, constructability, procurement, construction, and commissioning. Responsible ... Develop and implement tools to assist project management teams in assessing and driving ...

CONCRETE STRATEGIES

Scheduling Intern

Saint Louis, MO · On-site

$28K - $32K/yr

... front end development, constructability, procurement, construction, and commissioning. Responsible ... Develop and implement tools to assist project management teams in assessing and driving ...

CONCRETE STRATEGIES

Scheduling Intern

Saint Louis, MO

$28K - $32K/yr

... front end development, constructability, procurement, construction, and commissioning. Responsible ... Develop and implement tools to assist project management teams in assessing and driving ...

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All JobsFrontend Developer JobsAssistant Frontend Developer JobsAssistant Frontend Developer Jobs in St. Louis, MO

Assistant Frontend Developer information

See St Louis, MO salary details

$41.3K

$107.3K

$151.2K

How much do assistant frontend developer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for assistant frontend developer in St. Louis, MO is $107,346.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,100.00 and $117,600.00 per year, depending on experience, location, and employer.

What is an assistant frontend developer?

Assistant Frontend Developers are entry-level professionals who support the design and implementation of user interfaces for websites and web applications. They work closely with senior developers to write code using HTML, CSS, and JavaScript, and help ensure that websites are visually appealing and function correctly across different devices. Their responsibilities often include fixing bugs, testing features, and learning modern frontend frameworks. This role is ideal for those starting a career in web development and looking to gain practical experience while collaborating with a team.

What is the difference between Assistant Frontend Developer vs Junior Frontend Developer?

AspectAssistant Frontend DeveloperJunior Frontend Developer
Required CredentialsTypically an associate degree or relevant certificationsUsually an entry-level role with similar educational background
Work EnvironmentSupports senior developers, collaborates on projectsWorks on basic tasks, learning and gaining experience
Employer & Industry UsageCommon in tech companies, startups, agenciesWidely used in software development teams
Comparison Search IntentOften searched for as a stepping stone to Junior rolesMost common entry-level position in frontend development

The main difference between an Assistant Frontend Developer and a Junior Frontend Developer lies in their experience level and responsibilities. Assistant roles often involve supporting senior team members and learning on the job, while Junior Developers focus on executing basic tasks and gaining foundational skills. Both roles are entry-level and serve as stepping stones in a frontend development career.

What are some common challenges faced by assistant frontend developers when working on collaborative projects?

Assistant Frontend Developers often encounter challenges such as merging code changes with other team members, understanding and following established coding standards, and adapting quickly to different frameworks or libraries used by the team. Communication is key, as you may need to clarify requirements with designers, backend developers, or senior engineers to ensure the final product meets expectations. Learning to navigate version control systems like Git and participating in code reviews are also important aspects of the collaborative environment.

What are the key skills and qualifications needed to thrive as an assistant frontend developer?

To thrive as an Assistant Frontend Developer, you need a good grasp of HTML, CSS, JavaScript, and an understanding of responsive web design, typically supported by a relevant degree or coding bootcamp. Familiarity with frontend frameworks like React or Vue.js, version control systems such as Git, and basic usage of design tools is often expected. Attention to detail, eagerness to learn, and effective communication are important soft skills for collaborating with teams and adapting to evolving technologies. These skills and qualities are crucial for building user-friendly interfaces, ensuring code quality, and contributing effectively to development projects.

What are the most commonly searched types of Frontend Developer jobs in St. Louis, MO?

The most popular types of Frontend Developer jobs in St. Louis, MO are:

Assistant Frontend Developer jobs near you
Infographic showing various Assistant Frontend Developer job openings in St. Louis, MO as of July 2026, with employment types broken down into 1% As Needed, 74% Full Time, 20% Part Time, 1% Temporary, 2% Contract, and 2% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $107,346 per year, or $51.6 per hour.

Full Stack Developer 729

Freedom Technology Solutions Group

Saint Louis, MO • On-site

Full-time

Medical, Life, Retirement, PTO

Posted 29 days ago

Job description

Freedom Technology Solutions Group is seeking a Full Stack Software Engineer to develop modern cloud-native applications supporting mission-critical intelligence and geospatial platforms. You will design, develop, and maintain user interfaces, APIs, backend services, and cloud-native microservices that enable analysts and mission partners to securely discover, process, and exploit geospatial data.
This is a hands-on software engineering role working across the full technology stack from responsive web applications to scalable backend services and cloud infrastructure.
Responsibilities:
  • A
  • Design and develop modern web applications
  • Develop RESTful APIs and backend services
  • Build cloud-native microservices
  • Develop responsive user interfaces
  • Integrate with geospatial services and enterprise APIs
  • Build automated testing pipelines
  • Participate in Agile development
  • Support CI/CD deployments
  • Optimize application performance
  • Troubleshoot production systems
  • Collaborate with architects, data scientists, and mission stakeholders to gather, document, and refine customer requirements, including data mapping and integration needs
  • Assist in implementing integration solutions in collaboration with development team members
  • Facilitate communication between stakeholders to ensure timely and effective requirements execution
  • Ensure activities align with established processes, standards, and mission objectives
  • Contribute to documentation of processes, procedures, integration patterns, and lessons learned

Key Technologies:
  • Familiarity with backend systems and integration concepts (APIs, data mapping, file-based transfers)
  • Experience with AWS services (S3, Lambda, SQS, SNS, ECS, ECR, EKS, API Gateway, Cloudwatch, KMS)
  • Familiarity with CI/CD pipelines (GitLab CI/CD or similar)
  • Understanding of containerized and serverless environments
  • Familiarity with data transfer and file processing concepts
  • Familiarity with dashboards, metrics, and operational visibility tools
  • Understanding of secure data handling and access control concepts (IAM, least privilege)

Frontend
  • JavaScript - React, Angular, HTML5, CSS3

DevOps
  • Docker, Podman, Kubernetes
  • GitLab, Harbor
  • CloudFormation, CDK, Terraform, other IaaC
  • Linux

Backend
  • Auroa, PostgreSQL/PostGIS, Oracle (w/spatial)
  • KVS - Redis, Memcache, Elasticache
  • GDAL/OGR etc.
  • Other storage tech (s3, NFS, CIFS, SAMBA, NAS, SAN, DAS, etc)

Required Qualifications:
  • Active TS/SCI clearance (eligible for CI Poly)
  • 1-3(Junior), 3-7(Journeyman), 8-11 (Senior), >12 (Principal) years of experience in software development, system integration, or technical support roles
  • Experience working directly with customers or stakeholders in a technical or mission environment
  • Strong communication and coordination skills across technical and non-technical teams
  • Experience gathering and documenting requirements
  • Ability to manage multiple tasks and priorities in a dynamic environment
  • Familiarity with Agile development practices
  • Experience using GitLab or similar tools for collaboration and tracking

Desired Qualifications:
  • Familiarity secure data movement environments
  • Experience working with enterprise service processes such as Service+
  • Development or scripting experience (Python, JavaScript, or similar)
  • Experience with data mapping or integration workflows (using JSON or other object notation)
  • Familiarity with operational dashboards and metrics reporting
  • Experience supporting customer requirement implementation and/or system integration efforts
  • Experience building cloud-native applications
  • Experience with microservices
  • Experience with geospatial applications
  • Experience with mapping frameworks
  • Experience with GDAL or geospatial libraries
  • Experience supporting Intelligence Community customers

What's in It for You?
Flexible work environment
A team mentality - work with friendly, like-minded professionals
Work with innovative, cutting edge technologies
Enjoy extremely competitive compensation and benefits
A work-life balance you can count on
Opportunities to grow and advance your career on our dime
The Benefits You Get with Freedom
Amazing benefits including matching 401k, fully paid medical, and more
Generous paid time off - including paid site closure days
Competitive salary offerings
Paid training and tuition reimbursement
Referral bonuses
Fully paid life and disability
Annual logo wear allowance
Company sponsored events (game nights, holiday party, summer party, happy hours)
Interested in learning more about Freedom and our culture? Contact us today! We're constantly hosting hiring events in our office and elsewhere, to help you get a sense of what life is like at Freedom before joining the team.
As an Equal Opportunity Employer, we do not discriminate on the basis of race, color, religion, sex, age, marital status, disability or veteran status
Applicant Federal & E-Verify Postings
VEVRAA Federal Contractor
Accessibility: If you need an accommodation as part of the employment process, please contact Human Resources at
Phone: 410-290-9035
Email: recruiting@goftsg.com
Equal Opportunity Employer, including disabled and veterans.
If you want to view the EEO Law poster, please choose your language: English - Spanish - Arabic - Chinese
If you want to view the EEO Law Supplement poster, please choose your language: English - Spanish - Chinese
If you want to view the Pay Transparency Policy Statement, please click the link: English

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