Wissen Technology - Senior Engineer - Java/Spring Boot

Required Skills :

- 10 + years of hands-on Java development experience.

- Strong experience in building products or applications from scratch (not just maintenance/support).

- Good understanding of object-oriented programming principles.

- Experience with frameworks like Spring, Spring Boot, Hibernate, etc.

- Strong knowledge of data structures, algorithms, and design patterns.

- Should have strong problem-solving abilities.

- Familiarity with RESTful APIs, microservices architecture is a plus.

- Solid understanding of database technologies (SQL, NoSQL).

- Exposure to cloud platforms (AWS, Azure, or GCP) will be an advantage.

- Strong debugging and troubleshooting skills.

1. Role Summary :

We are seeking an exceptional Senior Engineer who can design, build, and deliver end-to-end distributed systems operating at extreme scale, high performance, and high reliability.

This role requires :

- Expert-level system design capability

- Ability to handle complex business and technical requirements

- Hands-on engineering expertise

- Deep understanding of distributed systems

- Strong clarity in architecture and communication

- Leadership in influencing technical direction

2. Key Responsibilities :

End-to-End System Architecture :

- Architect complete systems from initial concept to production rollout.

- Identify and define system boundaries, components, and service responsibilities.

- Produce both high-level and low-level design artifacts (HLD, LLD).

- Ensure architectures meet scaling, reliability, security, and performance goals.

- Establish clear trade-offs for design decisions backed by solid engineering reasoning.

Component-Level Design :

- Break complex systems into independently deployable components.

- Define APIs, communication contracts, schemas, and data models.

- Apply modern architecture patterns (DDD, microservices, event-driven, CQRS, hexagonal).

- Ensure clarity around responsibilities, dependencies, and interaction patterns.

- Validate component-level design for maintainability and extensibility.

Minimum Qualifications :

- 10+ years in backend engineering, distributed systems, or architecture.

- Proven track record of designing complex, large-scale systems.

- Strong coding ability in at least one major backend language.

- Experience with large distributed data and messaging systems.

- Experience owning systems end-to-end in production.

Preferred Qualifications :

- Experience with massive-scale systems (millions?billions of events daily).

- Expertise in real-time/streaming/low-latency architectures.

- Experience leading engineering teams architecturally.

- Exposure to multi-tenant environments.

- Advanced understanding of reliability engineering.