Senior Backend Engineer – Node.js/TypeScript & AWS

About the role

Your code will protect millions of devices. CUJO AI’s OTM team builds Android and iOS apps backed by a cloud platform on AWS, delivering cybersecurity and parental‑control features to users on the go.

Key responsibilities

• Design and build cloud‑native services on AWS serverless architecture using Lambda, API Gateway, Cognito, CDK, DynamoDB, CloudFront, MSK, and more.
• Develop RESTful APIs with Node.js/TypeScript to support OTM product functionality and integrate with existing CUJO AI platforms.
• Own infrastructure‑as‑code and CI/CD pipelines (Jenkins, GitHub Actions).
• Monitor, troubleshoot, and optimise systems for reliability at scale.
• Mentor engineers and collaborate across distributed, multinational teams.

Required profile

• Strong hands‑on experience with TypeScript and Node.js.
• Extensive experience with AWS services.
• Knowledge of OAuth2.0 / OpenID Connect and secure authentication flows.
• Proven track record of building CI/CD pipelines and driving test automation.
• Security‑first mindset and comfort working in Agile teams.
• Fluent English.

Required skills

• TypeScript
• Node.js
• AWS (Lambda, API Gateway, Cognito, CDK, DynamoDB, CloudFront, MSK)
• OAuth2.0 / OpenID Connect
• CI/CD (Jenkins, GitHub Actions)
• Infrastructure‑as‑code
• RESTful API development

What we offer

• Flexible work – fully remote or hybrid.
• Learning & certifications with access to online training platforms and bonuses for AWS certifications.
• Annual performance bonuses.
• Health insurance and comprehensive benefits.
• Team gatherings – annual company events and activities.
• Referral rewards up to €1,000 per successful hire.
• Compensation package ranging from €5,000 to €7,000 gross.