Application Engineer - IV

Responsibilities

• Collaborate closely with business users, product managers, and engineering partners - actively asking questions and clarifying requirements to ensure high-quality outcomes.
• Design and implement Python-based microservices on AWS, using event-driven patterns tied to S3, DynamoDB, Lambda, Step Functions, and ECS.
• Demonstrate expert-level ownership of data architecture, including, S3 buckets and Access Points, Bucket/object modelling and partitioning, DynamoDB and NoSQL data modelling, REST / GraphQL APIs, Encryption/KMS policies, High-throughput performance considerations Integrate S3 and DynamoDB with event-driven compute (Lambda), orchestrated workflows (Step Functions)
• container workloads (ECS).
• Define and execute end-to-end testing strategies for event-driven systems, including contract testing, schema validation, replay/idempotency testing, and integration scenarios across multiple AWS services.
• Work with Avro for data serialization, including schema design and evolution, compatibility rules, and performance optimization using Python libraries such as fastavro or avro .
• Maintain engineering excellence through clean architecture, code reviews, robust documentation, observability and resilience practices, and operational readiness.
• Provide 3rd-line support as needed and contribute to continuous improvement.
• Qualifications and Skills Minimum 8 years of experience in application development, system architecture and database management.
• Bachelor’s degree (B.E./B.Tech) or Master’s degree (M.E./M.Tech) in relevant fields such as Computer Science, Information Technology, Engineering, or a related field.
• Expert-level Python development , including: Object-oriented programming Type hints and static analysis Packaging, virtual environments
• dependency management Concurrency (multiprocessing) Deep testing experience using pytest , unittest
• related frameworks Deep hands-on expertise with Amazon S3 , including: S3 Access Points and fine-grained IAM controls Lifecycle rules, storage classes, multipart uploads Experience working with NoSQL databases: Design and data modelling DynamoDB in AWS Designing for efficiency and extensibility Strong experience with: AWS Lambda (serverless patterns, event integration, concurrency & retries) AWS Step Functions (workflow orchestration, error handling, compensating flows) Amazon ECS (task definitions, service scaling, container orchestration) Top-notch end-to-end testing for event-driven architectures: Contract testing & consumer-driven contracts Avro schema validation and compatibility testing Integration tests across S3 → Lambda → Step Functions → ECS pipelines Monitoring and observability validation Avro expertise: Schema design & evolution strategies Efficient read/write using fastavro , etc.
• Handling large datasets and streaming workflows Experience with cloud-native CI/CD, logging
• monitoring tools (Git/Bitbucket, CloudWatch, Splunk, etc.) Location This role is based in Hyderabad, Telangana at Vanguard’s India office.
• Only qualified external applicants will be considered.
• Our mission Vanguard adheres to a simple purpose: To take a stand for all investors, to treat them fairly, and to give them the best chance for investment success.
• Our commitment to you Vanguard takes the same long-term view of your success—at work and in life—with Benefits and Rewards packages that reflect what you care about, throughout all the phases and stages of your life.
• Our Total Rewards programs provide you and your loved ones with wellness support for key areas in your life: Financial wellness We're committed to enabling your financial success and provide competitive offers and programs.
• Physical wellness We're committed to providing benefits that support your physical health and wellness.
• Personal wellness We're committed to providing resources that help support the full scope of your life.
• How we work Vanguard has implemented a hybrid working model for most of our employees (crew members), designed to capture the benefits of enhanced flexibility while enabling in-person learning, collaboration, and connection.
• We believe our mission-driven and highly collaborative culture is a critical enabler to support long-term client outcomes and enrich the employee experience.