**About the Role**

Remote - based in
**European timezones**

We’re looking for a
**Full Stack Developer**
who’s excited by the idea of building technology that influences real human behaviour.

You’ll join a small, ambitious engineering team with the freedom to innovate and the responsibility to deliver. You’ll help architect and build scalable, cross-platform applications that bring our behavioural engine to life — combining cloud-native infrastructure with gamified, data-driven user experiences.

If you thrive in a startup environment, love to experiment, and get satisfaction from seeing ideas move from whiteboard to production, you’ll fit right in.

**Key Responsibilities**

- Design, develop, and maintain cross-platform mobile applications using
**React Native**
.
- Architect and implement AWS services (
**Lambda, DynamoDB, S3, API Gateway, Cognito, IAM, CloudFront**
) for backend functionality and cloud integration.
- Develop infrastructure as code using
**Terraform**
and
**AWS CDK**
for scalable, automated deployments.
- Build and integrate
**smart contracts with Solidity**
and
**Web3**
frameworks.
- Collaborate with product managers, designers, and engineers to deliver user-friendly, high-performance apps.
- Implement
**CI/CD pipelines**
with tools like Jenkins, GitHub Actions, or AWS CodePipeline.
- Ensure application
**security, compliance, and performance optimization**
.
- Troubleshoot and resolve production and staging issues quickly and effectively.
- Stay up to date with
**AWS advancements, mobile development trends, and Web3 innovations**
.

**Required Skills & Qualifications**

- **5+ years**
of experience in full stack or mobile application development.
- Strong proficiency in
**React Native**
with a proven track record of shipping apps.
- Hands-on experience with
**AWS services**
(Lambda, DynamoDB, S3, API Gateway, Cognito, EC2, IAM, CloudFront).
- Strong knowledge of
**TypeScript / JavaScript**
and modern front-end frameworks.
- Experience with
**state management**
libraries (Redux, MobX, or Context API).
- Understanding of
**RESTful APIs, GraphQL, and WebSockets**
.
- Proficiency in
**Terraform**
and/or
**AWS CDK**
.
- Familiarity with
**CI/CD pipelines**
and automation tools.
- Strong grasp of
**security best practices, performance optimization, and debugging**
.
- Experience with
**testing frameworks**
(Jest, Detox, Appium).
- Knowledge of
**Agile development practices**
.

**Preferred Qualifications**

- Experience with
**Solidity, Web3.js, or Ethers.js**
.
- Knowledge of
**native Android (Kotlin/Java)**
or
**iOS (Swift/Objective-C)**
development.
- Familiarity with
**Firebase, AWS AppSync, or AWS Amplify**
.
- Exposure to
**Docker/Kubernetes**
and containerized environments.
- Experience with
**App Store and Play Store deployments**
.

• Strong
**problem-solving skills**
and ability to thrive in both independent and collaborative environments.