JOB DESCRIPTION:

EXPERIENCE: 5–10+ years of hardcore backend engineering experience

This Is NOT a Typical Java Role

If your experience is mostly CRUD APIs, controller wiring, or shallow service layers — this role is not for you.

We are looking for a top-tier backend engineer who thrives on:

• Designing complex algorithms
• Building high-performance, memory-efficient systems
• Owning deep backend logic that actually moves the needle

You will work close to the core engine of the product, not the edges.

What You’ll Be Trusted With 

• Architect and build backend systems that must perform under load
• Design and implement custom algorithms for real-world, non-trivial problems
• Solve performance bottlenecks involving CPU, memory, I/O, and concurrency
• Build backend services where latency, throughput, and correctness matter
• Own document & PDF processing pipelines end-to-end:

–  Composition
–  Rendering
–  Optimization
–  High-volume generation

• Make hard technical decisions and stand by them
• Mentor engineers by setting the bar, not micromanaging

Non-Negotiable Skills 

• Exceptional Java expertise (Core Java, Spring Boot, Java 8+)
• Strong command over:

–  Data structures & algorithms
–  Multithreading & concurrency models
–  JVM internals & memory management

• Proven experience building custom algorithms (this will be evaluated)
• Deep backend engineering experience with Spring / Spring Boot
• Strong understanding of:

–  API design principles
–  Fault tolerance & resilience
–  Performance tuning & profiling

• Ability to reason about time complexity, space complexity, and trade-offs
• Strong database fundamentals (query optimization, indexing, transactions)

Big Plus If You’ve Done This Before

• Built or worked on PDF / document processing systems
• Experience with:

–  Opensource or licensed PDF engines
–  CCM platforms or document automation products

• Designed systems handling millions of documents or transactions
• Worked on event-driven or async architectures
• Experience with message brokers (ActiveMQ, Kafka, RabbitMQ)
• Exposure to Kubernetes-based deployments or large-scale microservices

What Sets You Apart 

• You enjoy hard problems more than frameworks
• You think in algorithms, trade-offs, and failure modes
• You care about code quality, performance, and long-term maintainability
• You can look at a slow system and methodically make it fast
• You take ownership like a product engineer, not just a task executor

Interview Focus (Be Prepared) 

• Algorithm design & problem solving
• Deep Java fundamentals
• System design discussions (backend-heavy)
• Performance tuning scenarios
• Real-world debugging and optimization challenges

Why This Role Is Worth Your Time 

• You’ll work on core backend systems, not glue code
• You’ll solve problems most teams avoid
• You’ll have real ownership and technical influence
• You’ll work on document and PDF systems at scale
• You’ll be surrounded by engineers who respect depth over buzzwords