Senior Java Developer

Cognizant; City Of London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A global technology company in the United Kingdom is seeking a skilled engineer to migrate on-premise services to AWS and upgrade components in Spring Boot. The ideal candidate will have strong experience with Java, Kafka, and Kubernetes, as well as effective communication skills. This role requires self-sufficient problem-solving capabilities within a collaborative environment.

Qualifications

• Experience with migrating on-premise services to cloud environments.
• Proficiency in creating services that publish/consume from Kafka.
• Ability to work independently and solve problems without assistance.

Responsibilities

• Migrate on-premise services to OCP in AWS.
• Upgrade components from Spring Boot 3.5 to 4.
• Handle BAU work.

Skills

Java 17, 21

JUnit 5, Cucumber

Spring Boot 3, 4

Kafka

Kubernetes

Jenkins and CICD

Tools

Gradle

GitHub

Nexus

Artifactory

Sonar

Jacoco

AWS

PostgreSQL

Job description

3 Days of work in the office

Job Summary

Work Profile for First 6 Months:

• Migrate on-premise services to OCP in AWS.
• Update pipelines to use in-house Trident solution.
• Upgrade all components from Spring Boot 3.5 to 4.
• Creation of new services or data sinks that are single responsibility and publish/consume from Kafka.
• Service decommissions.
• BAU work.

Job Requirements

Must Have Skillsets

• Java 17, 21
• Junit 5, Cucumber
• Spring Boot 3, 4
• Tooling (Gradle, GitHub, Nexus, Artifactory, Sonar, Jacoco)
• Kafka
• Kubernetes, Helm
• Databases (Preferably HBase, PostgreSQL)
• Jenkins and CICD

Nice to Have Skills

• Kafka Streams, Data sinks
• OCP
• RabbitMQ
• Observability (Datadog, Grafana, Logging concepts and traces, Logback)
• AWS
• NoSQL datastores (Mongo, DynamoDB)
• Security (Kerberos, JWT, Hashi Corp Vault, CVEs)
• Design principles (Event Driven, testing, migrations, SOA, microservices, APIs)

Soft Skills

• Engineers should be self‑sufficient and able to think for themselves, challenge solutions, and resolve issues without assistance from other FTEs.
• Effective communication skills.
• Ability to challenge solutions.
• Understanding of Solid & Design principles.