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Senior Software Engineer

Certara

United States · Posted July 16, 2026

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This listing does not state pay. Across 1,475 open senior software engineer listings that state pay, the middle half runs $175,000 to $222,500 and the median is $202,500.

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About the job

Overview

Certara accelerates medicines using proprietary biosimulation software, technology and services to transform traditional drug discovery and development. Its clients include more than 2,000 biopharmaceutical companies, academic institutions and regulatory agencies across 62 countries. Certara touches more than 80% of all drugs that are approved by the FDA and is constantly working to efficiently and effectively guide its customers through drug approval.

As a Senior Software Engineer on the Certara Admin team, you play a role in designing, implementing, and maintaining our software solutions. Your expertise in software development and commitment to delivering high-quality, compliant solutions for our customers will guide your day to day. You will work with a variety of technologies and frameworks to complete tasks in an efficient manner. You will collaborate with cross-functional teams to drive innovative solutions in an agile environment.

Leveraging your expertise as a Senior Full Stack Developer, you will design, develop, and maintain scalable web applications, playing a key role in optimizing both front-end and back-end components to ensure seamless performance and user experience. You’ll be responsible for understanding existing codebases and design approaches while evaluating new technologies to deliver the most effective solutions to complex challenges. A solid understanding of OAuth-based authentication and authorization is important in this role, as Certara Admin manages identity management across our platform.

You will be working within a team of highly accomplished software engineers in an environment which actively encourages collaboration and learning from one another. The leadership team is committed to supporting you in your learning and development and helping you to further advance your career.

To empower our developers, we will equip you with the best hardware and software available.

We are a team that believes in our work as an organization and are looking for team members who lead with curiosity.

Responsibilities

Develop and maintain features in software applications using Java, JavaScript, and PostgreSQL

Design and implement secure authentication and authorization flows using OAuth

Understand and apply applicable coding standards

Collaborate with members of the product, test, and software engineering organizations

Write unit tests as appropriate to new functionality

Participate in code and software review processes

Qualifications

Qualifications

4+ years of experience as a Software Programmer or Software Engineer

Solid understanding of OAuth 2.0 authentication and authorization protocols

Experience working in a highly collaborative software organization

Nice to Have

Experience with Keycloak or similar identity and access management (IAM) platforms

This role requires candidates to be located on the East Coast of the United States.

Certara bases all employment-related decision on merit, taking into consideration qualifications, skills, achievement, and performance. We treat all applicants and employees without regard to personal characteristics such as race, color, ethnicity, religion, sex, sexual orientation, age, nationality, marital status, pregnancy, physical or mental condition, genetic information, military service, or other characteristic protected by law.

Develop and maintain features in software applications using Java, JavaScript, and PostgreSQL

Design and implement secure authentication and authorization flows using OAuth

Understand and apply applicable coding standards

Collaborate with members of the product, test, and software engineering organizations

Write unit tests as appropriate to new functionality

Participate in code and software review processes

Qualifications

4+ years of experience as a Software Programmer or Software Engineer

Solid understanding of OAuth 2.0 authentication and authorization protocols

Experience working in a highly collaborative software organization

Nice to Have

Experience with Keycloak or similar identity and access management (IAM) platforms

This role requires candidates to be located on the East Coast of the United States.

Certara bases all employment-related decision on merit, taking into consideration qualifications, skills, achievement, and performance. We treat all applicants and employees without regard to personal characteristics such as race, color, ethnicity, religion, sex, sexual orientation, age, nationality, marital status, pregnancy, physical or mental condition, genetic information, military service, or other characteristic protected by law.