Senior Backend Engineer Job Vacancy at ERICO Group Company Limited

Senior Backend Engineer Job Vacancy at ERICO Group Company Limited

ERICO GROUP COMPANY LIMITED

Standard Certified ISO 9001:2015, ISO/IEC 27001:2022, ISO 14001:2015, ISO 45001:2018

CAREER OPPORTUNITY

Senior Backend Engineer – Technical Requirements

Minimum experience in this field 5years

Core Competencies

1. 1. Java & Spring Boot Expertise

• Deep understanding of Java 11+, including concurrency, streams, and performance optimization.
• Strong experience with Spring Boot 3.x, including:

○ Dependency Injection (DI) and Inversion of Control (IoC)

○ Spring Security (OAuth2, JWT)

○ Spring Data JPA, Hibernate

○ Spring WebFlux (Reactive Programming)

○ Spring Actuator, Micrometer for observability

○ Familiarity with Spring Cloud (Config, Gateway, Circuit Breakers) for

microservices.

2. 2. API Development (GraphQL &RPC)

GraphQL:

■ Proficient with GraphQL Java (or libraries like graphql-java-kickstart)

■ Schema design, query optimization, and N+1 problem mitigation (DataLoader)

■ Authentication/authorization  in GraphQL

RPC (Remote Procedure Call):

○ Experience with gRPC (Protocol Buffers) or Apache Thrift

○ Understanding of synchronous vs. asynchronous RPC patterns

3. 3. Database Proficiency (SQL & NoSQL)

• SQL Databases (PostgreSQL, MySQL, Oracle):

○ Advanced query optimization, indexing strategies

○ Transactions, locking mechanisms, and isolation levels ○

Experience with Flyway or Liquibase for schema migrations

• NoSQL Databases (MongoDB, Cassandra, Redis): ○

Data modeling for scalability and performance

○ Caching strategies (Redis for distributed caching)

○ Understanding of CAP theorem and trade-offs

4. 4. Design Patterns & System Architecture

• Strong grasp of Gang of Four (GoF) design patterns (Singleton, Factory, Strategy, Observer, etc.)
• Experience with microservices patterns (CQRS, Saga, Event Sourcing)
• Ability to design scalable, fault-tolerant, and low-latency systems

5. 5. Testing & Quality Assurance

• Unit Testing: JUnit 5, Mockito, AssertJ
• Integration Testing: TestContainers, Spring Boot Test
• Behavior-Driven Development (BDD): Cucumber or similar
• Performance Testing: JMeter, Gatling

6. 6. DevOps & CI/CD (GitHub Actions, Git) Git & GitHub:

• Advanced Git commands (rebase, cherry-pick, interactive rebase)
• Git workflows (GitFlow, Trunk-Based Development)
• GitHub Actions:

○ Setting up CI/CD pipelines (build, test, deploy)

○ Workflow optimization (caching, matrix builds)

○ Security scanning (CodeQL, Dependabot)

• Containerization & Orchestration:

○ Docker (multi-stage builds, best practices)

○ Kubernetes (basic understanding of deployments, services, Helm)

7. 7. Observability & Monitoring

• Logging: ELK Stack (Elasticsearch, Logstash, Kibana) or Grafana Loki
• Metrics: Prometheus, Grafana

8. 8. Security Best Practices

• OWASP Top 10 vulnerabilities mitigation
• Secure coding practices (input validation, parameterized queries)
• Secrets management (Vault, AWS Secrets Manager)

9. 9. Messaging and Message Brokers

Experience with Kafka/RabbitMQ for event-driven architectures

Soft Skills & Additional Expectations

• Strong problem-solving and debugging skills
• Ability to mentor junior engineers and conduct code reviews
• Experience with Agile/Scrum methodologies
• Good communication skills for cross-team collaboration

Bonus Skills (Nice-to-Have)

• Experience with Kafka/RabbitMQ for event-driven architectures
• Distributed Tracing: Jaeger, OpenTelemetry
• APM Tools: New Relic, Datadog (optional)

How to Apply :

Send your CV to: hr@ericogroup.co.tz

Erico Group Company Limited, Mikocheni Light Industrial Area, P.O. Box 32060,

DSM-Tanzania,

Web: www.ericogroup.co.tz