Saransa Media Lab

Information / Computer / Technology

Senior Java Backend Developer

Views: 778|Published on: Sep 25, 2025

IT & Telecommunication

Senior Level

Full Time

Vacancy: 1

Pepsicola, Kathmandu-32|

Experience: More than 6 years|

Not Disclosed

Job Description

Roles and responsibilities of this job

We are seeking a Senior Java Backend Developer with deep expertise in Spring Boot to design, build, and scale reliable backend services and APIs. You will own complex systems end-to-end, lead technical initiatives, mentor engineers, and collaborate closely with product, architecture, DevOps, and QA to deliver secure, performant, and maintainable platforms.

Key Responsibilities:

Architect, design, and develop microservices and REST/GraphQL APIs using Java and Spring Boot
Lead end-to-end feature delivery: technical design, implementation, testing, deployment, and observability
Define and enforce coding standards, best practices, and architecture guidelines (DDD, Clean Architecture)
Model robust domain and data schemas; optimize queries and data access patterns
Ensure system reliability and scalability through caching, queuing, concurrency control, and circuit breakers
Implement security best practices: authN/Z, secret management, input validation, and OWASP controls
Drive testing strategy: unit, integration, contract, and end-to-end tests; promote TDD where appropriate
Build and maintain CI/CD pipelines and deployment strategies (blue/green, canary)
Monitor production systems, define SLOs/SLIs, and improve reliability via observability and incident response
Conduct design and code reviews, mentor mid/junior engineers, and lead knowledge-sharing sessions
Collaborate with product to refine requirements, estimate work, and break down epics into deliverables
Contribute to technical roadmap, platform modernization, and cost/performance optimization

Job Specification

Required qualifications for this job

Required Education Level:Under Graduate (Bachelor)

Required Experience:More than 6 years

Other Specification

Required Qualifications

6–10+ years of professional backend development experience, with 4+ years focused on Java
Strong proficiency with:
- Java 11+ (preferably 17/21): streams, concurrency, functional patterns, memory management
- Spring ecosystem: Spring Boot, Spring Web/MVC, Spring Data (JPA), Spring Security, Spring Cloud
- RESTful API design, versioning, error handling; familiarity with GraphQL is a plus
Database expertise:
- Relational: PostgreSQL/MySQL; advanced SQL, indexing, query plans, transactions
- ORMs: JPA/Hibernate; N+1 avoidance, batching, caching
Distributed systems patterns: microservices, event-driven architectures, idempotency, saga/outbox
Messaging/streaming: Kafka/RabbitMQ (producers/consumers, retries, dead-letter queues)
Caching: Redis/In-memory caches; cache-aside/write-through, TTL, eviction strategies
Testing: JUnit, Mockito, Testcontainers, WireMock/Contract tests
DevOps/Cloud: Docker, Kubernetes, and one major cloud (AWS/GCP/Azure)
Observability: OpenTelemetry, Metrics/Logging/Tracing (Prometheus, Grafana, ELK/EFK, Jaeger/Zipkin)
Security: OAuth2/OIDC, JWT, RBAC/ABAC, CSRF, TLS, secrets rotation
CI/CD: GitHub Actions/GitLab CI/Jenkins; artifact management; feature flags; rollout strategies
Proven experience owning services in production and leading technical initiatives

Preferred/Nice-to-Have

Spring Cloud components (Config, Gateway, OpenFeign, Circuit Breaker/Resilience4j)
GraphQL with Spring (DGS/Kickstart), schema design and federation basics
Data pipelines and CDC (Debezium), event sourcing, CQRS
Performance tuning: JVM profiling (JFR, YourKit), GC tuning, heap/thread dump analysis
API-first development with OpenAPI/Swagger, code generation, and API governance
Infrastructure as Code: Terraform, Helm; service mesh (Istio/Linkerd)
Security hardening: mTLS, key management (KMS), Vault, audit logging, compliance (SOC2/PCI/HIPAA)
Payments/Fintech or other regulated industry experience
Experience with multi-tenant SaaS and domain-driven design at scale

Skills Required

Required skills for this job

RESTful API

Graphql

MySQL

PostgreSQL

Schema Design

Spring Cloud Stack

Salary

Offered financial and non-financial compensation for this job

Offered Salary:Not Disclosed

Applying Procedure

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About the organization

Saransa Media Lab

Information / Computer / Technology

Pepsicola, Kathmandu

Welcome to Saransa Technology Group — where cutting-edge innovation meets meaningful community impact. Our range of products is crafted to connect people, deliver insights, and empower both individuals and businesses.