Senior Full-Stack Software Engineer - JavaScript & Node (EU-US Working Hours)
Confirmed on the employer's own hiring board on Oct 22, 2026. First seen by Alion on Aug 6, 2026. Syneos Health scores B on the Alion truth index.
Syneos Health® is a leading fully-integrated life sciences services organization built to accelerate customer success. We partner with innovators at every point across the drug development and commercialization continuum, helping them navigate complexity, anticipate change and accelerate progress.
Every day we perform better because of how we work together, as one team, each the best at what we do. We bring together talented experts across a broad spectrum of business critical corporate functions. Every role plays an essential part in enabling our customers to achieve their goals. Our teams are agile, collaborative, and committed to delivering-for each other, for our customers, and ultimately for the people who rely on the services we support.
Discover what your 25,000 future colleagues already know:
Why Syneos Health
- We are passionate about developing our people, through career development and progression; supportive and engaged line management; technical and therapeutic area training; peer recognition and total rewards program.
- We are committed to building an inclusive culture - where you can authentically be yourself. Central to this is our purpose - Driven to Deliver - which captures the passion of our colleagues to show up each day and shape solutions that have the ability to dramatically impact someone’s life.
- We are continuously building the company we all want to work for and our customers want to work with. Why? Because we know that when we bring together smart colleagues from across the world, we can shape the future of healthcare, driving impact for customers and defining the pace of patient progress.
Job Responsibilities
JOB SUMMARY
The Sr. Software Engineer (Full Stack Software Developer) will collaborate with the development team to advance our company mission and contribute to the core product experience. This role will work on our client-facing technology suite which increases efficiency by connecting patients, sites, and sponsors throughout the clinical trial lifecycle
This role requiresEU- US Working Hours Sometimes Global Alignment
JOB RESPONSIBILITIES
- Gather technical project requirements and specifications from clients and internal stakeholders (technical and non-technical) during the project development lifecycle.
- Own all aspect of the application, including quality, performance testing, and production support.
- Translate business rules and stakeholder requirements into project specifications that leverage internal and external systems.
- Lead the design of data ingestion and transformation systems and processes.
- Support development team by developing technical and architectural plans, generating documentation, and assembling presentation material that define project technical approaches, constraints, and milestones.
- Engage directly with technical stakeholders to communicate project updates (via in-person demonstrations, virtual calls/emails) throughout the production lifecycle.
- Run all the scrums and tech sessions
QUALIFICATION REQUIREMENTS
- BA/BS Degree in Computer Science or related discipline or equivalent work experience.
- Professional experience in a development role
- Personal projects that show an aptitude for engineering and product sense
- Ability to work in areas outside of their usual comfort zone and love to learn new technologies
- Experience starting projects from scratch as well as jumping into an existing architecture
- Desire to keep up-to-date on the latest industry techniques and trends
- Ability to multitask and work in a cross-functional team environment
- Strong experience with JavaScript & Node.js (preferred)
- Full stack disposition (professional experience on backend strongly preferred)
- Strong understanding of Service Oriented Architecture (SOA)
- Proficient understanding of database architecture and performance
- Proficient understanding of asynchronous, object oriented, and functional programming design patterns
- Experience working with AWS (EC2, ECS, Lambda, SQS/Kinesis)
- Experience with other enterprise server-side languages a plus (e.g. Java, Python, Ruby, etc.)
- Experience with React.js is a plus
- Experience developing and scaling REST APIs for various platforms
- Experience developing low latency, high availability applications
Get to know Syneos Health
Over the past 5 years, we have worked with 94% of all Novel FDA Approved Drugs, 95% of EMA Authorized Products and over 200 Studies across 73,000 Sites and 675,000+ Trial patients.
No matter what your role is, you’ll take the initiative and challenge the status quo with us in a highly competitive and ever-changing environment. Learn more about Syneos Health.
Additional Information
Tasks, duties, and responsibilities as listed in this job description are not exhaustive. The Company, at its sole discretion and with no prior notice, may assign other tasks, duties, and job responsibilities. Equivalent experience, skills, and/or education will also be considered so qualifications of incumbents may differ from those listed in the Job Description. The Company, at its sole discretion, will determine what constitutes as equivalent to the qualifications described above. Further, nothing contained herein should be construed to create an employment contract. Occasionally, required skills/experiences for jobs are expressed in brief terms. Any language contained herein is intended to fully comply with all obligations imposed by the legislation of each country in which it operates, including the implementation of the EU Equality Directive, in relation to the recruitment and employment of its employees. The Company is committed to compliance with the Americans with Disabilities Act, including the provision of reasonable accommodations, when appropriate, to assist employees or applicants to perform the essential functions of the job.