Java Developer

Position Title: Full Stack Developer Advanced

Location: Columbus, OH

Duration: Contract 12 months (possible extension)

Interview Process:

1-hour Zoom panel interview (Behavioral + Technical)

Notes:

Senior-level role working within an Agile team

Must-Have Skills:

Backend-focused role (Java 70%, React 30%)

Strong experience with Java, Spring Boot, and Kafka

Ability to develop APIs from scratch

AWS experience (ECS, EC2, S3, Lambda)

Job Description:

Java Full Stack - (Hands-on IC, 7 plus years) Spring + React + AWS + Kafka

Backend (Java/Spring Boot) expert:

Java: strong OOP + functional style, concurrency, collections, memory/perf awareness; can read thread dumps/heap dumps and profile hotspots.

Kafka: Experience designing, building, and operating Kafka-based event streaming platforms topics/partitions, producers/consumers, consumer groups, schema/serialization (Avro), Kafka Connect/Streams, security (ACLs/TLS), monitoring and tuning

Spring Boot: controllers/validation, exception handling, interceptors/filters, content negotiation, file upload/streaming, async request handling where needed.

Spring Data/JPA: entity modeling, transactions, isolation levels, pagination, query tuning; handles N+1/fetch strategy issues; sensible use of projections vs entities.

Spring Security: OAuth2/OIDC integration patterns, method-level security, custom auth filters, CORS/CSRF, secure session/token handling.

API design: OpenAPI-first mindset, versioning strategy, idempotency, consistent error schema, backward compatibility.

Integration: consuming/producing APIs, resilient client patterns (timeouts, retries, circuit breaker), request signing if applicable.

Build/deps: Photon/Maven/Gradle, BOMs, dependency hygiene, vulnerability remediation workflow.

Frontend (React) strong:

React + TypeScript: component design, hooks, state management, form handling, routing.

UI quality: accessibility basics, performance, error boundaries, loading states.

API integration: robust data fetching/caching, pagination/infinite scroll, optimistic updates, consistent client-side error handling.

Testing: React Testing Library; e2e basics with Cypress/Playwright.

AWS and runtime strong hands-on:

Identity and access: IAM roles/policies, least privilege, cross-account basics, secrets management patterns.

Infrastructure as Code: Terraform or CloudFormation/CDK (one strongly); environment promotion strategy (dev/test/prod), parameterization, drift awareness.

Containerization: Docker images, health checks, resource limits, multi-stage builds.

Core AWS fluency (expected to have shipped production workloads):

Compute: ECS and EC2 autoscaling concepts

Networking: VPC, subnets, security groups, NACL basics, private vs public connectivity

Storage/data: S3; RDS/Aurora Postgress fundamentals; DynamoDB awareness even if not primary

Integration: SQS/SNS

Observability: Splunk and CloudWatch logs/metrics/alarms, log retention, dashboards

Data and persistence advanced:

SQL: indexes, query plans, joins, transaction semantics; can tune slow query issues end-to-end (app + DB).

Migrations: Flyway/Liquibase discipline; zero-downtime schema evolution patterns.

Caching: Redis (ElastiCache) usage patterns, TTL design, cache stampede prevention, invalidation strategy.

Observability and production excellence expert:

Structured logging with correlation IDs; PII redaction discipline.

Metrics + SLO thinking: latency/error rate saturation signals; actionable alarms (not noise).

Tracing: Open Telemetry

Operability: runbooks, on-call readiness, meaningful postmortems with preventative actions.

Testing and quality expert:

Backend: JUnit5, Mockito, Spring test slices, Test containers; contract tests (Pact) preferred for service-to-service APIs.

Performance: basic load testing and interpreting results; capacity and tuning recommendations.

Security: SAST/dependency scans; remediates CVEs quickly and safely.

Security (practical, senior-level) non-negotiable:

AuthZ: RBAC/ABAC concepts; least privilege both in app and AWS IAM.

Secrets: no secrets in code/logs; uses managed secrets and rotation patterns.

Additional Skills:

Full Stack Java Developer with Spring Batch, AWS(ECS, S3, Lambda), Infrastructure, Aurora Postgres DB, Kafka excellent communication.