Senior Node.js/TypeScript Engineer - AWS Serverless

CUJO AI®; Espoo; Hybrid; EUR 55,800 - 78,120; Full time

Benefits offered by this job

Flexible work

Learning & certifications

Annual bonus

Health insurance

Referral rewards

Job summary

CUJO AI in Finland is seeking a Senior Software Engineer to design and build cloud-native services on AWS serverless architecture using Lambda, API Gateway, Cognito and DynamoDB. You will develop RESTful APIs with Node.js/TypeScript and integrate with CUJO AI platforms.

You will own infrastructure-as-code and CI/CD pipelines with Jenkins and GitHub Actions, monitor reliability at scale, and mentor engineers across distributed teams. Fluent English and security-first mindset required.

Qualifications

• Strong hands-on experience with TypeScript and Node.js.
• Experience with AWS services and secure authentication flows (OAuth2/OpenID Connect).
• Experience building CI/CD pipelines and driving test automation.
• Security-first mindset and Agile teamwork.

Responsibilities

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

Skills

TypeScript

Node.js

AWS services

OAuth2

OpenID Connect

CI/CD pipelines

Test automation

Security mindset

Agile teamwork

Fluent English

Tools

Jenkins

GitHub Actions

AWS CDK

Job description

CUJO AI in Finland is seeking a Senior Software Engineer to design and build cloud-native services on AWS serverless architecture using Lambda, API Gateway, Cognito and DynamoDB. You will develop RESTful APIs with Node.js/TypeScript and integrate with CUJO AI platforms.

You will own infrastructure-as-code and CI/CD pipelines with Jenkins and GitHub Actions, monitor reliability at scale, and mentor engineers across distributed teams. Fluent English and security-first mindset required.