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Junior Fullstack Developer Jobs in Illinois (NOW HIRING)

Sr Software Engineer

Chicago, IL · On-site

$130K - $193K/yr

Guides junior engineers * Operates with little day-to-day supervision, making technical decisions ... Fullstack (NodeJS & React) * Deep knowledge of Node.js and frontend libraries such as React (or ...

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Junior Fullstack Developer information

What is a Junior Fullstack Developer?

A Junior Fullstack Developer is an entry-level software developer who works on both the front-end and back-end components of web applications. They typically have foundational knowledge of programming languages and frameworks such as HTML, CSS, JavaScript, and at least one back-end language like Node.js, Python, or Java. Their responsibilities may include building user interfaces, connecting to databases, and collaborating with other developers to deliver functional software solutions. As juniors, they usually work under the supervision of more experienced developers while they gain more skills and experience.

What are some common challenges faced by Junior Fullstack Developers when working on cross-functional teams?

Junior Fullstack Developers often encounter challenges in balancing front-end and back-end tasks, especially when collaborating with more specialized team members. They may need to quickly adapt to different coding standards, tools, and communication styles across departments. Regularly seeking feedback, proactively asking questions, and participating in code reviews can help bridge knowledge gaps and ensure smooth collaboration. Over time, these experiences build both technical proficiency and confidence in contributing to diverse team projects.

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

AspectJunior Fullstack DeveloperJunior Frontend Developer
Required SkillsHTML, CSS, JavaScript, basic backend knowledge (e.g., Node.js, Python)HTML, CSS, JavaScript, frameworks like React or Angular
Work EnvironmentBoth frontend and backend tasks, full project involvementPrimarily UI/UX, client-side development
Common UsageStartups, small teams, full project rolesWeb design agencies, frontend-focused teams

The main difference between a Junior Fullstack Developer and a Junior Frontend Developer is the scope of work. Fullstack developers handle both frontend and backend tasks, while frontend developers focus mainly on user interface and experience. Your choice depends on your interest in working across the entire tech stack or specializing in frontend design.

What are the key skills and qualifications needed to thrive as a Junior Fullstack Developer, and why are they important?

To thrive as a Junior Fullstack Developer, you need a solid understanding of front-end and back-end programming languages (such as JavaScript, HTML, CSS, and a back-end language like Node.js or Python), as well as foundational knowledge of web development principles. Familiarity with version control systems like Git, databases (SQL or NoSQL), and frameworks such as React or Express is typically required, and certifications like freeCodeCamp or coding bootcamps can be beneficial. Strong problem-solving skills, adaptability, and effective communication help you collaborate with teams and learn quickly in a fast-paced environment. These skills and qualities are crucial for efficiently building, maintaining, and improving web applications while contributing to team objectives.
What cities in Illinois are hiring for Junior Fullstack Developer jobs? Cities in Illinois with the most Junior Fullstack Developer job openings:
Infographic showing various Junior Fullstack Developer job openings in Illinois as of June 2026, with employment types broken down into 92% Full Time, 6% Part Time, and 2% Contract. Highlights an 89% Physical, 4% Hybrid, and 7% Remote job distribution.
Sr Software Engineer

Sr Software Engineer

PayPal

Chicago, IL • On-site

$130K - $193K/yr

Full-time

Medical, PTO

Posted 5 days ago


PayPal rating

6.8

Company rating: 6.8 out of 10

Based on 18 frontline employees who took The Breakroom Quiz

15th of 17 rated payment service providers


Job description

The Company

PayPal has been revolutionizing commerce globally for more than 25 years. Creating innovative experiences that make moving money, selling, and shopping simple, personalized, and secure, PayPal empowers consumers and businesses in approximately 200 markets to join and thrive in the global economy.

We operate a global, two-sided network at scale that connects hundreds of millions of merchants and consumers. We help merchants and consumers connect, transact, and complete payments, whether they are online or in person. PayPal is more than a connection to third-party payment networks. We provide proprietary payment solutions accepted by merchants that enable the completion of payments on our platform on behalf of our customers.

We offer our customers the flexibility to use their accounts to purchase and receive payments for goods and services, as well as the ability to transfer and withdraw funds. We enable consumers to exchange funds more safely with merchants using a variety of funding sources, which may include a bank account, a PayPal or Venmo account balance, PayPal and Venmo branded credit products, a credit card, a debit card, certain cryptocurrencies, or other stored value products such as gift cards, and eligible credit card rewards. Our PayPal, Venmo, and Xoom products also make it safer and simpler for friends and family to transfer funds to each other. We offer merchants an end-to-end payments solution that provides authorization and settlement capabilities, as well as instant access to funds and payouts. We also help merchants connect with their customers, process exchanges and returns, and manage risk. We enable consumers to engage in cross-border shopping and merchants to extend their global reach while reducing the complexity and friction involved in enabling cross-border trade.

Our beliefs are the foundation for how we conduct business every day. We live each day guided by our core values of Inclusion, Innovation, Collaboration, and Wellness. Together, our values ensure that we work together as one global team with our customers at the center of everything we do - and they push us to ensure we take care of ourselves, each other, and our communities.

Job Summary:

This job delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC). It involves advising management on project-level issues, guiding junior engineers, operating with little supervision, and applying knowledge of technical best practices.

Job Description:

Essential Responsibilities:

  • Delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC) (design, implementation, testing, delivery and operations), based on definitions from more senior roles.
  • Advises immediate management on project-level issues
  • Guides junior engineers
  • Operates with little day-to-day supervision, making technical decisions based on knowledge of internal conventions and industry best practices
  • Applies knowledge of technical best practices in making decisions

Minimum Qualifications:

  • 3+ years relevant experience and a Bachelor's degree OR Any equivalent combination of education and experience.

Additional Responsibilities & Preferred Qualifications:

  • Must have a BS or MS Degree in Computer Science or equivalent

  • 5+ years of hands-on development experience in Fullstack (NodeJS & React)

  • Deep knowledge of Node.js and frontend libraries such as React (or similar frameworks)

  • Strong experience building RESTful APIs and/or GraphQL services

  • Solid understanding of data modeling, caching, and working with both SQL and NoSQL databases (e.g., BigTable, DynamoDB, MySQL, Redis)

  • Strong OOP skills, with ability to analyze requirements and transform into scalable software designs.

  • Expertise in online payments and related domains is a plus.

  • Expert-level understanding of designing and developing data-intensive applications and architecting them for scalability and availability.

  • Developing high-traffic backend services, with low latency and designing them for scale.

  • Experience applying software design patterns, data structures, and algorithms.

  • Prior experience in monitoring large-scale distributed systems.

  • Experience with CI/CD pipelines, containerization (Docker) and orchestration platforms.

  • Excellent skills in complex technical problem-solving.

  • Quality mindset with experience in writing test plans and automation.

  • Solid understanding of distributed systems and cloud-based architectures (AWS, GCP, or Azure).

  • Proficient in multiple programming languages/scripting languages.

Subsidiary:

PayPal

Travel Percent:

0

-

The base pay for this role will depend on where you work and the relevant experience and expertise you bring. The expected range of pay for this role by location is:

Primary Location | Pay Range:

San Jose, California | ($143,500.00 - $212,850.00 Annually)

Additional Location(s) | Pay Range:

Chicago, Illinois | ($130,500.00 - $193,600.00 Annually) Additional compensation for this role may include an annual performance bonus, equity, or other incentive compensation, as applicable.

PayPal does not charge candidates any fees for courses, applications, resume reviews, interviews, background checks, or onboarding. When making an application directly, we will never ask you to share passwords, one-time passcodes (OTP), or verification codes. Any such request is a red flag and likely part of a scam. All communication regarding your application will come from official PayPal email domains. If you suspect fraudulent activity, please report it immediately. To learn more about how to identify and avoid recruitment fraud please visit https://careers.pypl.com/contact-us.

For the majority of employees, PayPal's balanced hybrid work model offers 3 days in the office for effective in-person collaboration and 2 days at your choice of either the PayPal office or your home workspace, ensuring that you equally have the benefits and conveniences of both locations.

Our Benefits:

At PayPal, we're committed to building an equitable and inclusive global economy. And we can't do this without our most important asset-you. That's why we offer comprehensive, choice-based programs, to support all aspects of personal wellbeing-physical, emotional, and financial-delivering meaningful value where it matters most.We strive to create a flexible, balanced work culture with a holistic approach to benefits, including generous paid time off, healthcare coverage for you and your family, and resources to create financial security and support your mental health.

Who We Are:

Click Here to learn more about our culture and community.

Commitment to Diversity and Inclusion

PayPal provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state, or local law. In addition, PayPal will provide reasonable accommodations for qualified individuals with disabilities. If you are unable to submit an application because of incompatible assistive technology or a disability, please contact us at paypalglobaltalentacquisition@paypal.com.

Belonging at PayPal:

Our employees are central to advancing our mission, and we strive to create an environment where everyone can do their best work with a sense of purpose and belonging. Belonging at PayPal means creating a workplace with a sense of acceptance and security where all employees feel included and valued. We are proud to have a diverse workforce reflective of the merchants, consumers, and communities that we serve, and we continue to take tangible actions to cultivate inclusivity and belonging at PayPal.

Any general requests for consideration of your skills, please Join our Talent Community.

We know the confidence gap and imposter syndrome can get in the way of meeting spectacular candidates. Please don't hesitate to apply.


What PayPal employees say

Pay

Benefits

Hours and flexibility

Workplace

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About PayPal

Sourced by ZipRecruiter

PayPal has remained at the forefront of the digital payment revolution for more than 20 years. By leveraging technology to make financial services and commerce more convenient, affordable, and secure, the PayPal platform is empowering more than 400 million consumers and merchants in more than 200 markets to join and thrive in the global economy. For more information, visit paypal.com. PayPal provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, PayPal will provide reasonable accommodations for qualified individuals with disabilities. If you are unable to submit an application because of incompatible assistive technology or a disability, please contact us at paypalglobaltalentacquisition@paypal.com.

Industry

Software development

Company size

10,000+ Employees

Headquarters location

San Jose, CA, US

Year founded

1998

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