Explore 2 javascript typescript engineer react jobs from 2 hiring companies in Montgomery City, MO, US. Filter by remote, salary, experience, and company, then open any listing to apply.

javascript-typescript-engineer-react

Javascript Typescript Engineer React

Fulton

Mexico

Wentzville

Columbia

Troy

O'Fallon

Lake Saint Louis

Washington

Warrenton

Jefferson City

Saint Peters

Dardenne Prairie

Union

Vandalia

Bowling Green

Wellsville

Wright City

Hermann

Weldon Spring

Javascript Typescript Engineer React Jobs

CARFAX

Mastercard

Hybrid

Our PurposeMastercard powers economies and empowers people in 200&#43; countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.Title and Summary<h3></h3>Software Engineer II<h3></h3>Overview: The Infrastructure Design Engineering Automation (IDEA) team at Mastercard is looking for a Software Engineer II with a focus on front-end development to join as a hands-on individual contributor. In this role, you’ll work on well-defined problems while contributing to scalable, user-focused solutions. You’ll participate in design discussions, collaborate across teams, and take ownership of delivering high-quality, reliable code. The IDEA team builds internal tools that help infrastructure and platform teams do their work faster and more consistently. Our tools support how technical designs are created, reviewed, and turned into usable outputs for other teams and automation. One of our main applications is RAA, a web‑based tool used to create and manage technical architecture designs. We focus on usability, reliability, and gradual automation, working closely with engineers, architects, and platform teams. This is a hybrid position based in O’Fallon, MO requiring three days per week onsite. Role: •	Contribute to the development of front-end features using modern frameworks. •	Improve existing code for clarity, performance, and maintainability. •	Troubleshoot issues and support production systems as needed. •	Assist in building responsive, user-friendly web applications. •	Support testing, debugging, and troubleshooting of applications. •	Participate in code reviews and contribute to technical design discussions. •	Write unit tests and maintain clear, concise documentation. •	Collaborate with cross-functional teams to understand requirements and deliver solutions. •	Continuously learn and apply new technologies and development techniques. All About You: •	Experience in software engineering or application development, with a focus on front-end technologies •	Foundational knowledge of JavaScript, TypeScript, and React. •	Basic understanding of web development concepts (HTML, CSS, APIs) •	Familiarity with version control systems (e.g., Git) •	Familiarity with Agile methodologies (Scrum or Kanban) and iterative delivery models •	Comfortable working across the full software development lifecycle (build, test, release, support) •	Experience with modern development tools (version control, CI/CD pipelines, code reviews, issue tracking systems) •	Exposure to professional web application development is preferred. •	Strong problem-solving skills and a passion for building user-centric solutions. •	Self-motivated, proactive, and able to work independently in a collaborative environment. •	Strong communication skills, with the ability to explain technical concepts clearly. •	Bachelor degree in Computer Science, Software Engineering, Information Technology, Mathematics, or a related field. Equivalent practical experience may also be considered. This role is not eligible for Mastercard’s work authorization sponsorship. As such, candidates must be eligible to work in the United States, now as well as in the future, without employer sponsorship.<h3></h3>Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.<h3></h3>Corporate Security Responsibility All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:<ul><li>Abide by Mastercard’s security policies and practices;</li><li>Ensure the confidentiality and integrity of the information being accessed;</li><li>Report any suspected information security violation or breach, and</li><li>Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.</li></ul><h3></h3>In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.Pay RangesO'Fallon, Missouri: $92,000 - $147,000 USD<h3></h3><h3></h3><h3></h3><h3></h3>

Software Engineer II

Front-end software engineer with React, TypeScript, JavaScript; knowledge of HTML/CSS and APIs; experience with Agile, Git, CI/CD; bachelor’s in CS or related field.

Technology Jobs - Columbia, MO
 
 Columbia,
 Missouri

<h3>Description</h3>
 
 Join Team CARFAX as Principal Software Engineer Isn't it time you bragged about where you work? At CARFAX, we do, every day. We pride ourselves on being mission-focused on helping to grow a brand built on accuracy and integrity. We care deeply about our products and our customers. We’re more than just a company: We help millions of consumers make more-informed decisions every day. We know that our teammates are our most valuable asset, and we value a balanced life while tackling challenging projects in a fast-paced environment. <strong style="background-repeat: no-repeat;outline: none;font-weight: 600;color: rgb(51,51,51);font-family: 'Open Sans' , Helvetica;font-size: 14.0px;font-style: normal;letter-spacing: normal;text-indent: 0.0px;text-transform: none;word-spacing: 0.0px;">One last thing: Our four-day week continues in Summer 2026! What makes our Tech Culture Amazing?We’re passionate about having a creative and innovative environment where our developers collaborate and continuously learn and grow. Autonomy is a key pillar of our tech culture. Our developers have the freedom to bring new tools, frameworks, and ideas to the table knowing their voice will be heard. We’re not afraid of trying new things; if the case is made for a new technology or approach, our developers know it will be tried. What makes our development environment unique: <ul><li>Hands-on Learning</li><li>Test Driven Development (TDD)</li><li>Pair Programming</li><li>Agile Methodologies</li><li>Time provided for self-directed professional development.</li></ul>At CARFAX, we believe in the power of teamwork and value in-person interactions so that we can collaborate and thrive together. This position will require 3 days per week in our Columbia,MO office subject to change with future business needs.What you'll be doing:<ul><li>Participating with Architects in high-level technical design discussions to aid in defining scope of upcoming projects</li><li>Working with dynamic agile development teams providing technical guidance and mentorship</li><li>Promoting great software design and quality through detailed code reviews</li><li>Performing new technology research and prototyping</li><li>Developing, and maintaining, technical documentation and tooling</li><li>Participating in daily huddles and other Scrum ceremonies</li><li>Collaborating closely with other developers, UX designers, support teams and other stakeholders</li></ul>What we're looking for:  <ul><li>8+ years of experience in software design and development of complex systems</li><li>Ability to provide leadership and mentor engineers through complicated technical challenges</li><li>Ability to work and collaborate effectively in a team environment; as well as independently</li><li>Object oriented experience with languages such as Java, Kotlin, TypeScript, or Python</li><li>Experience with developing in AWS cloud environment</li><li>Knowledge of Microservices architectural pattern</li><li>Experience with client/server architecture and building web services using gRPC, REST or GraphQL</li><li>Experience with Relational and NoSQL database systems such as MySQL, Mongo, DynamoDB or Elasticsearch</li><li>Knowledge of coding best practices for security and performance</li><li>Knowledge of modern front-end JavaScript libraries (such as ReactJS, Vue, or Angular)</li><li>Knowledge of JavaScript, NodeJS, TypeScript, HTML5 and CSS3</li><li>Experience in full SDLC development including design, building, testing, deployment, upgrade, and support.</li><li>Love to learn! To get the greatest solutions we need to continually explore what’s new and be willing to dive in and learn.</li></ul>What’s in it for you: <ul><li>Competitive compensation, benefits and generous time-off policies</li><li>4-Day summer work weeks and a winter holiday break</li><li>401(k) / DCPP matching</li><li>Annual bonus program</li><li>Casual, dog-friendly, and innovative office spaces.</li><li>For a comprehensive list of benefits, please visit our website: <a target="_blank" href="https://jobs.jobvite.com/carfax/p/benefits">https://jobs.jobvite.com/carfax/p/benefits</a>.</li></ul>Don’t just take our word for it: <ul><li>10X Virginia Business Best Places to Work</li><li>10X Washington Post Top Workplace</li><li>9X Washingtonian Great Places to Work</li><li>St. Louis Post-Dispatch Best Places to Work.</li></ul>
 
 About CARFAX and S&P Global Mobility 
S&P Global has recently <a href="https://press.spglobal.com/2025-04-29-S-P-Global-Announces-Intent-to-Separate-Mobility-Segment-into-Standalone-Public-Company" target="_blank">announced</a> the intent to separate our Mobility Segment into a standalone public company.
 
<a href="https://www.carfax.com/" target="_blank">CARFAX</a>, part of S&P Global Mobility, helps millions of people every day confidently shop, buy, service and sell used cars with innovative solutions powered by CARFAX vehicle history information. The expert in vehicle history since 1984, CARFAX provides exclusive services like CARFAX Used Car Listings, CARFAX Car Care, CARFAX History-Based Value and the flagship CARFAX® Vehicle History Report™ to consumers and the automotive industry. CARFAX owns the world’s largest vehicle history database and is nationally recognized as a top workplace by The Washington Post and Glassdoor.com. Shop, Buy, Service, Sell – Show me the CARFAX™. S&P Global Mobility is a division of S&P Global (NYSE: SPGI). S&P Global is the world’s foremost provider of credit ratings, benchmarks, analytics and workflow solutions in the global capital, commodity and automotive markets. 
 
US Equal Opportunity Employer Statement:
CARFAX is an Affirmative Action/Equal Opportunity Employer. It is the policy of CARFAX to provide equal employment opportunity to all persons regardless of race, color, sex, pregnancy, religion, national origin, age, ancestry, citizenship status, veteran status, military status, disability or handicap, sexual orientation, genetic information or any other status protected by federal, state or local law. In addition, CARFAX will provide reasonable accommodations for qualified individuals with disabilities. We maintain a drug-free workplace. We are a participant in E-Verify.
 
Canadian Equal Opportunity Employer Statement:
CARFAX Canada is an equal opportunity employer, and all qualified candidates will receive consideration for employment without regard to race/ethnicity, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, marital status, military veteran status, unemployment status, or any other status protected by law.
 
We’re committed to providing accommodations by request for candidates taking part in all aspects of the recruitment and selection process. For a confidential inquiry or to request an accommodation, please contact your recruiter or email <a href="/cdn-cgi/l/email-protection#d6bebfa4bfb8b196b5b7a4b0b7aef8b5b9bb">[email&#160;protected]</a>.

Principal Software Engineer

8+ years in software design and development; leadership and mentoring; strong collaboration; OO languages; AWS; microservices; REST/gRPC/GraphQL; databases; front-end JS; full SDLC; continuous learning.

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Javascript Typescript Engineer React Jobs in Montgomery City, MO, US

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