Backend/API Developer

Role Description UST Tittle: Lead II - Software Engineering Who We Are At UST, we help the world’s best organizations grow and succeed through transformation. Bringing together the right talent, tools, and ideas, we work with our client to co-create lasting change. Together, with over 30,000 employees in 30+ countries, we build for boundless impact—touching billions of lives in the process. Visit us at .

Summary UST is looking for Backend/API developer

The Opportunity

• We are seeking an experienced AWS + API Developer to design, build, and maintain scalable cloud-based solutions and RESTful/GraphQL APIs.
• You will work on microservices architectures, optimize cloud infrastructure, and collaborate with cross-functional teams to deliver high-performance applications.

Key Responsibilities

• Design and develop RESTful and GraphQL APIs with a focus on scalability, security, and performance Architect and deploy cloud solutions on AWS (EC2, Lambda, RDS, S3, API Gateway, DynamoDB, etc.)
• Implement CI/CD pipelines and Infrastructure as Code (IaC) using tools like CloudFormation, Terraform, or SAM Optimize database performance and design schemas for relational and NoSQL databases
• Implement authentication, authorization, and security best practices (OAuth, JWT, IAM roles) Monitor, debug, and optimize API performance using CloudWatch, X-Ray, and other AWS monitoring tools
• Collaborate with frontend developers, product managers, and DevOps teams

Required Qualifications

• 5+ years of professional experience in backend/API development
• Strong proficiency in at least one programming language (Java, Python, Node.js, Go, or similar)
• 4+ years of hands-on experience with AWS services and cloud architecture Demonstrated expertise in designing and implementing REST/GraphQL APIs Solid understanding of relational (PostgreSQL, MySQL) and NoSQL databases (DynamoDB, MongoDB)
• Experience with containerization (Docker) and orchestration (Kubernetes or ECS preferred)
• Familiarity with Git and agile development practices Strong problem-solving skills and ability to write clean, maintainable code

Preferred Qualifications

• Experience with serverless architectures (Lambda, API Gateway, Step Functions) Knowledge of Infrastructure as Code (CloudFormation, Terraform, CDK)
• Experience with message queues (SQS, SNS, Kafka) AWS certification (Solutions Architect, Developer Associate, or higher)
• Experience with API testing, security, and rate limiting Familiarity with monitoring tools (CloudWatch, Datadog, New Relic)

Technical Skills Summary

• Languages: Java, Python, Node.js, Go, C#, or similar
• AWS Services: Lambda, EC2, RDS, DynamoDB, S3, API Gateway, CloudFormation, IAM, CloudWatch, VPC
• Databases: PostgreSQL, MySQL, MongoDB, DynamoDB, Redis
• Tools & Frameworks: Docker, Kubernetes, Git, Jenkins, CircleCI, Terraform, OpenAPI/Swagger
• API Patterns: REST, GraphQL, gRPC, WebSockets, event-driven architectures

What We Believe We’re proud to embrace the same values that have shaped UST since the beginning. Since day one, we’ve been building enduring relationships and a culture of integrity. And today, it's those same values that are inspiring us to encourage innovation from everyone, to champion diversity and inclusion and to place people at the centre of everything we do.

Humility We will listen, learn, be empathetic and help selflessly in our interactions with everyone.

Humanity Through business, we will better the lives of those less fortunate than ourselves.

Integrity We honour our commitments and act with responsibility in all our relationships.

Equal Employment Opportunity Statement UST is an Equal Opportunity Employer. We believe that no one should be discriminated against because of their differences, such as age, disability, ethnicity, gender, gender identity and expression, religion, or sexual orientation.

All employment decisions shall be made without regard to age, race, creed, colour, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by federal, state, or local law.

UST reserves the right to periodically redefine your roles and responsibilities based on the requirements of the organization and/or your performance.

• To support and promote the values of UST.
• Comply with all Company policies and procedures

Skills AWS, AWS CloudFormation, AWS Lambda, Terraform, Microservices, Swagger, REST, JWT, Event-Driven Architecture, MySQL, PostgreSQL