JavaScript Developer Jr./Sr.

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JavaScript Developer Jr./Sr.

University Overview

The University of Pennsylvania, the largest private employer in Philadelphia, is a world-renowned leader in education, research, and innovation. This historic, Ivy League school consistently ranks among the top 10 universities in the annual U.S. News & World Report survey. Penn has 12 highly-regarded schools that provide opportunities for undergraduate, graduate and continuing education, all influenced by Penn's distinctive interdisciplinary approach to scholarship and learning. As an employer Penn has been ranked nationally on many occasions with the most recent award from Forbes who named Penn one of America's Best Employers By State in 2021.

Penn offers a unique working environment within the city of Philadelphia. The University is situated on a beautiful urban campus, with easy access to a range of educational, cultural, and recreational activities. With its historical significance and landmarks, lively cultural offerings, and wide variety of atmospheres, Philadelphia is the perfect place to call home for work and play.

The University offers a competitive benefits package that includes excellent healthcare and tuition benefits for employees and their families, generous retirement benefits, a wide variety of professional development opportunities, supportive work and family benefits, a wealth of health and wellness programs and resources, and much more.

COVID-19 vaccination is a requirement for all positions at the University of Pennsylvania. New hires are expected to be fully vaccinated before beginning work at the University. For more information about Penn's vaccine requirements and the use of Penn Open Pass, visit the Penn COVID-19 Response website for the latest information.

Posted Job Title
JavaScript Developer Jr./Sr.

Job Profile Title
Application Developer C

Job Description Summary
The JavaScript Developer designs, codes, simulates, tests, implements and maintains application software and associated middleware, interfaces and databases. Works with clients or IT analysts to determine functional requirements. May work with vendor delivered software. Monitors and administers applications, providing technical and application support. He/she ensures adherence to technical, quality assistance, data integrity and security standards. May also be required to plan, organize and manage small projects.

Job Description

The JavaScript Developer will co-design and evolve a large-scale React client-side application featuring sophisticated scientific user interface components and visualizations. You will develop TypeScript data models and TypeScript code against a growing set of REST services, and participate in the specification of server-side data science APIs.

We prefer candidates with demonstrated expertise in human-computer interaction and user interface design. The successful applicant will create quality code, modular designs and clean APIs, using external frameworks as needed. S/he will work collaboratively within a nine member team of software developers and actively share design ideas on a daily basis. The applicant will bring an interest in exploring and integrating new technologies. S/he will work with biological data scientists and other database users to help translate complex scientific use cases into effective tools and interfaces.

Combine the advantages of an academic environment with the rigor of developing a production system. Work in an intellectually challenging yet relaxed environment. Enjoy flexible work hours and excellent vacation, tuition, health and retirement benefits. Work on a resource that makes a difference in the health of millions of people.

The VEuPathDB project, including this open position, is funded by multiple renewable contracts. VEuPathDB has had continuous, and expanding, funding for 18 years, and expects the trend to continue. Position is contingent on continued funding.




- BA/BS. Computer Science, Statistics, Mathematics or Biology preferred.

- 2+ years relevant programming experience

- Proven substantial knowledge of JavaScript, CSS, and the web platform

- Experience with modern JavaScript frameworks, and service oriented architecture

- Comfort with standard architectural patterns & best practices, and concepts in computer science

- Strong interpersonal skills, enabling effective communication with a collaborative team


- 3+ years relevant programming experience

- Experience in React/hooks, TypeScript, modern styling frameworks and functional programming skills/interest

- Interest and skill in UX design, experience in a UNIX environment, working knowledge of Java

- Interest and/or experience in bioinformatics and genomics is a plus

Expected salary for this level is $50,684 to $94,538.




- BA/BS. Computer Science, Statistics, Mathematics or Biology preferred.

- 3+ years relevant programming experience

- In-depth knowledge of JavaScript, and the web platform

- Expertise in modern JavaScript frameworks, and service oriented architecture

- Expertise in standard architectural patterns & best practices, and concepts in computer science

- Strong interpersonal skills, enabling effective communication with a collaborative team


- 5+ years relevant programming experience

- Masters degree in Computer Science, Statistics, Mathematics or Biology

- Experience in React/hooks, TypeScript, modern styling techniques and functional programming skills/interest

- Interest and skill in UX design, experience in a UNIX environment, working knowledge of Java

- Interest and/or experience in bioinformatics and genomics is a plus

Expected salary for this level is $59,703 to $114,270.

Working Conditions

Office, library, computer room

Physical Effort
Typically sitting at a desk or table

Job Location - City, State
Philadelphia, Pennsylvania

Department / School
School of Arts and Sciences

Pay Range
$50,684.00 - $138,391.00

Affirmative Action Statement
Penn adheres to a policy that prohibits discrimination on the basis of race, color, sex, sexual orientation, gender identity, religion, creed, national or ethnic origin, citizenship status, age, disability, veteran status, or any other legally protected class.

Special Requirements
Background check required after a conditional job offer is made. Consideration of the background check will be tailored to the requirements of the job.

University Benefits
  • Health, Life, and Flexible Spending Accounts: Penn offers comprehensive medical, prescription, behavioral health, dental, vision, and life insurance benefits to protect you and your family's health and welfare. You can also use flexible spending accounts to pay for eligible health care and dependent care expenses with pre-tax dollars.
  • Tuition: Take advantage of Penn's exceptional tuition benefits. You, your spouse, and your dependent children can get tuition assistance here at Penn. Your dependent children are also eligible for tuition assistance at other institutions.
  • Retirement: Penn offers generous retirement plans to help you save for your future. Penn's Basic, Matching, and Supplemental retirement plans allow you to save for retirement on a pre-tax or Roth basis. Choose from a wide variety of investment options through TIAA and Vanguard.
  • Time Away from Work: Penn provides you with a substantial amount of time away from work during the course of the year. This allows you to relax, take vacations, attend to personal affairs, recover from illness or injury, spend time with family-whatever your personal needs may be.
  • Long-Term Care Insurance: In partnership with Genworth Financial, Penn offers faculty and staff (and your eligible family members) long-term care insurance to help you cover some of the costs of long-term care services received at home, in the community or in a nursing facility. If you apply when you're newly hired, you won't have to provide proof of good health or be subject to underwriting requirements. Eligible family members must always provide proof of good health and are subject to underwriting.
  • Wellness and Work-life Resources: Penn is committed to supporting our faculty and staff as they balance the competing demands of work and personal life. That's why we offer a wide variety of programs and resources to help you care for your health, your family, and your work-life balance.
  • Professional and Personal Development: Penn provides an array of resources to help you advance yourself personally and professionally.
  • University Resources: As a member of the Penn community, you have access to a wide range of University resources as well as cultural and recreational activities. Take advantage of the University's libraries and athletic facilities, or visit our arboretum and art galleries. There's always something going on at Penn, whether it's a new exhibit at the Penn Museum, the latest music or theater presentation at the Annenberg Center, or the Penn Relays at Franklin Field to name just a few examples. As a member of the Penn community, you're right in the middle of the excitement-and you and your family can enjoy many of these activities for free.
  • Discounts and Special Services: From arts and entertainment to transportation and mortgages, you'll find great deals for University faculty and staff. Not only do Penn arts and cultural centers and museums offer free and discounted admission and memberships to faculty and staff. You can also enjoy substantial savings on other goods and services such as new cars from Ford and General Motors, cellular phone service plans, movie tickets, and admission to theme parks.
  • Flexible Work Hours: Flexible work options offer creative approaches for completing work while promoting balance between work and personal commitments. These approaches involve use of non-traditional work hours, locations, and/or job structures.
  • Penn Home Ownership Services: Penn offers a forgivable loan for eligible employees interested in buying a home or currently residing in West Philadelphia, which can be used for closing costs or home improvements.
  • Adoption Assistance: Penn will reimburse eligible employees on qualified expenses in connection with the legal adoption of an eligible child, such as travel or court fees, for up to two adoptions in your household.

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