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About the Role

As a Full Stack Engineer, you will help build and enhance Clariness' digital platform supporting clinical trial recruitment and patient engagement. Working as part of a cross-functional product team, you will develop new features, improve application performance, and contribute to creating scalable, high-quality software that delivers value to our users. This role is ideal for someone who enjoys solving technical challenges, collaborating with multidisciplinary teams, and continuously improving both products and engineering practices.

Responsibilities

Designing, developing, and maintaining new features for our Next.js-based clinical trial platform.
Taking full ownership of your code, features, and overall product quality.
Optimizing application performance across APIs, databases, frontend rendering, and accessibility.
Writing clean, maintainable, and well-tested code (unit, integration, and end-to-end).
Collaborating closely with engineers, designers, and product managers in an agile environment.
Participating in code reviews, technical discussions, and initiatives to reduce technical debt.
Contributing to scalable engineering practices and the continuous improvement of our applications.

Requirements

2+ years of professional experience in JavaScript development, ideally with TypeScript.
Experience with modern frontend frameworks such as Next.js, React, Angular, Vue, or Svelte.
Experience building backend applications using technologies such as Node.js, Express, NestJS, or Next.js.
Solid understanding of relational databases such as PostgreSQL or MySQL; experience with NoSQL databases is a plus.
Experience with unit and integration testing (Jest, Karma, or similar) is a plus.
Familiarity with containerized environments (Docker, Kubernetes) is a plus.
Knowledge of CI/CD pipelines and build tools (GitLab CI, GitHub Actions, Jenkins) is a plus.
Degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
Next.js or AWS certifications are a bonus.
Fluency in English.
Strong problem-solving, communication, and collaboration skills.
Proactive, quality-focused mindset with a passion for continuous learning and improvement.

Skills

JavaScript
TypeScript
Next.js
React
Angular
Vue
Svelte
Node.js
Express
NestJS
PostgreSQL
MySQL
NoSQL
Jest
Karma
Docker
Kubernetes
GitLab CI
GitHub Actions
Jenkins

Location

Berlin
Hamburg

Work Type

Full-time
Unlimited
Flexible working hours
Mobile working

Experience Level

2+ years of professional experience

Education Level

Degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
Next.js or AWS certifications

Benefits

A varied and exciting job with a lot of personal responsibility in an international company, where you can develop and expand your skills.
Professional and personal development opportunities - incl. personal development budget.
Flexible working hours and mobile working.
Regular team events and open feedback culture.
A versatile field of activity and challenging projects.
A supportive and open company culture, providing the opportunity to collaborate with a diverse and professional team.

About the Company

Impact healthcare by accelerating medical innovation through improved access to clinical trials, potentially bringing needed treatments to patients faster.

Equal Opportunity

At Clariness, we are proud to be an equal opportunity employer. We celebrate diversity and are are committed to creating an inclusive environment for all employees, regardless of race, religion, gender, sexual orientation, national origin, disability or age.