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Senior Principal Java Engineer at KloudOpp Limited

KloudOpp LimitedNigeria Software Development
Full Time
KloudOpp Limited is a startup educational technology company, building talents and providing opportunities for them.

About the Role

  • KloudOpp Limited is seeking an exceptional Senior Principal Java Engineer with deep mastery across modern and legacy Java ecosystems — including Java SE 6 → Java 23, Jakarta EE, Spring Framework 3 → Spring Boot 3.x, Micronaut, Quarkus, and large-scale JVM systems.
  • This role is for an engineering leader capable of architecting and building cloud-native microservices, secure enterprise applications, modern monoliths, and highly complex business logic–driven systems.
  • You must have delivered solutions across FinTech, HealthTech, Blockchain, and Logistics and be comfortable working on live production platforms.
  • The ideal candidate is hands-on, advanced in system design, and strong in leading architecture decisions.
  • The engineer must also be able to teach, mentor, and demonstrate concepts live.
  • A security background check, rigorous technical assessment, and public GitHub projects are required.

Key Responsibilities
Architecture & Engineering:

  • Architect and build enterprise-grade microservices using Java 11–23, Spring Boot, Micronaut, or Quarkus.
  • Design modern, secure monolithic applications where domain cohesion is required.
  • Apply Domain-Driven Design (DDD), Clean Architecture, Hexagonal Architecture, Event-Driven Architecture, and CQRS patterns.
  • Lead high-level technical decision-making and system design sessions.

Cloud, Infrastructure & DevOps:

  • Build, deploy, and manage Java platforms on AWS, Azure, and/or Google Cloud Platform (GCP).
  • Design CI/CD pipelines, infrastructure automation (Terraform, Helm, Kubernetes), and manage observability.
  • Implement and enforce cloud security best practices, encryption, and compliance.

Java & JVM Engineering
Demonstrate mastery in Java core concepts:

  • Concurrency, multithreading
  • Memory management & JVM tuning
  • Reactive programming
  • Streams, Lambdas, Collections, Generics
  • Functional programming patterns
  • Build robust APIs, microservices, event processors, streaming services (Kafka, Pulsar, Kinesis), and background workers.

Database & Storage:

  • Work hands-on with SQL and NoSQL databases: PostgreSQL, MySQL, Oracle, MongoDB, Redis, Cassandra, Elasticsearch.
  • Design and optimize relational schemas, indexing strategies, and transactional workflows.
  • Implement messaging and event storage solutions.

Security & Compliance:

  • Build and maintain highly secure applications following OWASP, PCI-DSS, HIPAA, and enterprise-grade best practices.
  • Participate in and pass security background verification.

Teaching, Leadership & Collaboration:

  • Mentor engineers through detailed code reviews, training sessions, and architectural walkthroughs.
  • Teach and guide internal cohorts or external learners when needed.
  • Work on live client projects, delivering demos and supporting engineering teams.

Required Experience

  • Interested candidates should possess a Bachelor`s Degree
  • 10+ years of enterprise Java engineering experience.
  • Expertise with Java SE 6 → 23, Spring Boot, and modern Java frameworks.
  • Strong experience with microservices, distributed systems, and cloud-native architectures.
  • Background in FinTech, HealthTech, Blockchain, and Logistics.
  • Solid DevOps skills across AWS/Azure/GCP.
  • Strong experience with relational & non-relational databases.
  • Experience teaching, mentoring, or leading senior engineering discussions.
  • Must pass security background checks.
  • Must pass rigorous technical assessment.

Why Join KloudOpp Limited?

  • Salary: N1,000,000 - N1,300,000 monthly.
  • 100% Remote Work — collaborate with global engineering teams
  • Build enterprise Java systems across multiple high-regulation industries
  • Opportunity to teach, mentor, and lead technical culture
  • Work directly on live client platforms
  • Accelerated pathway to senior leadership roles (Architect, Principal, Distinguished Engineer).

Method of Application

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