Role Summary:We are looking for a hands-on Java Solution Architect to design and lead scalable, secure, event-driven platforms. The ideal candidate has deep expertise in Java/Spring Boot microservices, Kafka, Redis/KeyDB, and open-source databases (Cassandra, PostgreSQL), with experience building high-throughput, low-latency systems.

Key Responsibilities

- Architecture & Design
- Define service boundaries using DDD; create service contracts and API specifications.
- Design Kafka-based event flows (topics, partitions, retention, DLQs, idempotency).
- Choose fit-for-purpose storage (Cassandra vs PostgreSQL) for workloads:
- Cassandra for time-series, high write throughput, and horizontal scaling.
- PostgreSQL for transactional integrity, complex joins, and reporting.
- Engineer caching strategies using Redis/KeyDB (read-through/write-through, TTL, eviction).
- Establish NFRs (performance, availability, RPO/RTO) and capacity planning.
- Security & Compliance
- Implement OAuth2/OIDC, mTLS, token-based auth, key rotation, encryption at rest/in transit.
- Work with InfoSec/AppSec for threat modeling, VAPT, secure SDLC integration.
- DevOps & Observability
- Drive CI/CD pipelines (blue/green/canary), container orchestration (Kubernetes).
- Define SLOs/SLIs; implement metrics, logs, traces; promote proactive alerting.
- Governance & Standards
- Publish architecture guidelines, coding standards, and API governance (versioning, deprecation).
- Champion documentation (ADR, sequence diagrams, data flow, runbooks).
- Mentoring & Leadership
- Coach engineers; conduct design/code reviews; lead PoCs and migrations.
- Collaborate with Product/Delivery to align scope, timelines, and risk mitigation.

Required Technical Skills (Deep Expertise)

- Java: Java 17+, Spring Boot, Spring Cloud, reactive programming (WebFlux).
- Microservices:



API Gateway, service mesh (Istio/Linkerd), resilience (Resilience4j).
- Kafka: Kafka Connect, Streams, consumer lag management, schema registry (Avro/JSON).
- Redis/KeyDB: Cluster configuration, HA, persistence (AOF/RDB), pub/sub and streams.
- Databases:
- Cassandra: Data modeling (partition keys, clustering), consistency levels, compaction strategies.
- PostgreSQL: Indexing strategies, partitioning, query planning, isolation levels, VACUUM.
- Cloud & Infra: Docker, Kubernetes, Helm/Terraform; AWS/Azure/GCP (EKS/AKS/GKE).
- Observability: Prometheus, Grafana, ELK/EFK, OpenTelemetry.
- Security: JWT, mTLS, secrets management (Vault/KMS), OWASP Top 10, compliance-aware design.

Soft Skills

- Robust stakeholder communication; ability to simplify complex technical decisions.
- Ownership mindset; risk identification and mitigation.
- Mentorship; collaborative leadership across cross-functional teams.

Preferred Experience

- Payments, reconciliation/settlement, high-throughput transaction systems.
- Event-driven architecture, CQRS, outbox/CDC patterns (Debezium).
- Performance tuning under production loads; chaos testing.

Pay: Up to ₹2,700,000.00 per year

Ability to commute/relocate:

- Mumbai, Maharashtra: Reliably commute or planning to relocate before starting work (Required)

Application Question(s):

- Have you deployed and managed applications on Kubernetes?
- Have you designed systems using both PostgreSQL and Cassandra, choosing the database based on the use case?
- Have you architected high-availability, scalable systems with Redis/KeyDB caching and implemented security using OAuth2/JWT or mTLS?

Experience:

- Java Microservices: 7 years (Required)
- Kafka / Event-Driven Architecture: 7 years (Required)
- Cloud & Distributed Systems: 7 years (Required)

Work Location: In person

📌 Java Solution Architect (India)
🏢 MarbleX
📍 India