Senior Full-Stack Engineer: React + Python Leader (Hybrid)

Syneos Health; Elsene; Hybrid; EUR 17,000 - 26,000; Full time

Job summary

Syneos Health is seeking a Senior Full Stack Software Developer with 6+ years of experience to design, develop, and deliver scalable web applications using modern frontend and backend technologies across React, Python, and Node.js.

You will mentor junior developers, contribute to Agile planning, and collaborate with product owners and QA teams to ensure high-quality releases, performance, security, and reliable integrations with Oracle Database.

Qualifications

• Minimum 6+ years of relevant software development experience.
• Strong frontend and backend development capabilities using modern web technologies.
• Experience mentoring developers or leading technical deliverables is preferred.

Responsibilities

• Design and develop scalable, secure, and high-performance web applications.
• Build frontend components using React.js.
• Develop backend services using Python; Node.js for APIs and integration.
• Lead API design and integration using REST/JSON.
• Mentor junior developers and perform code reviews.
• Collaborate with product owners, architects, QA teams, and business stakeholders.
• Contribute to Agile planning, estimation, release, and deployment activities.

Skills

React.js

JavaScript/TypeScript

REST API integration

HTML5/CSS3

Node.js

Agile/Scrum

Tools

Git

CI/CD

Oracle APEX

Job description

Syneos Health is seeking a Senior Full Stack Software Developer with 6+ years of experience to design, develop, and deliver scalable web applications using modern frontend and backend technologies across React, Python, and Node.js.

You will mentor junior developers, contribute to Agile planning, and collaborate with product owners and QA teams to ensure high-quality releases, performance, security, and reliable integrations with Oracle Database.