Our client is a leading software and services provider to communications and media companies, is looking for a skilled team to implement a People Services Mobile app for internal usage. The application aims to provide simple and user-friendly digital experience of the corporate services for Customer's employees and contractors.
Responsibilities:
Strong Mid + engineer with real project experience in designing and developing web application backends on AWS Serverless framework components including:
Authentication:
OAuth2: MS Azure Active Directory.
Main:
IAM (Roles, Permissions);
API Gateway (REST APIs);
AWS AppSync (GraphQL APIs);
Lambda (Node.js);
DynamoDB;
CloudFront + Lambda@Edge + S3;
CloudFormation.
Extra:
CloudWatch + X-Ray;
Systems Manager (Parameter Store);
Key Management Service.
Maybe we will use in Cafeteria:
SQS;
SNS;
Step Functions.
Requirements:
Clear understanding of Lambda (NodeJS) best practices and optimization, including caching, connection reuse, monitoring/logging, and Lambda MS patterns design;
Understanding of OAUTH2/OIDC authentication patterns (including Auth Code and token refresh) and JWT token usage;
Experience in building secure AppSync GraphQL schemas and resolvers for DynamoDB, AuroraSQL, and HTTP 3rd party endpoints;
Experience in building secure AppSync realtime integrations with consideration to custom authentication based on OIDC tokens;
Experience in designing and building secure REST APIs in AWS API Gateway with OpenAPI and Swagger for web application clients;
Knowledge and hands-on experience of DynamoDB data modeling design and query pattern design;
Experience in design of event driven services, both Synchronous and Asynchronous;
Experience working with AWS SAM templates for serverless deployments;
Experience working with GIT repository;
Experience working as part of a development team within an Agile SDLC scrum process;
Expected to document and guide detailed design based on HL solution architecture, following best practices and expected optimizations;
Expected to communicate detail design to developers and help answer questions, make necessary adjustments, and communicate with Solution Architect in case of any challenges or required changes;
Expected to lead the development team in order to meet Sprint scoping commitments and address any potential knowledge gaps;
Expected to write unit testing for any developed features;
Expected to participate in feature demos at the end of each Sprint;
Expected to work closely with BA and QA team to guide and review test cases;
Expected to complete code reviews and ensure design compliance on developed features;
Must be able to independently troubleshoot issues and resolve problems both in code and in work environment.
Additional experience:
Familiarity with Lambda@Edge and Lambda authenticators a plus;
Familiarity with Azure Graph API and Azure AD IDP a plus;
