JAVA ENIGNEER

Norconsulting; London; On-site; GBP 50,000 - 75,000; Full time

Job summary

A leading company seeks a Developer to enhance a multi-tenanted application in a dynamic startup environment. The successful candidate will work on designing libraries, building secure APIs, and improving application performance in a Java-focused stack. Experience with microservices and a strong understanding of web technologies are essential.

Qualifications

• Strong Java knowledge (JDK 8 or newer).
• Experience in developing secure APIs for various consumers.
• Familiarity with web technologies and performance profiling tools.

Responsibilities

• Design, implement and maintain application libraries for internal teams.
• Develop & maintain APIs for B2B and public consumers.
• Identify and fix performance bottlenecks in production systems.

Skills

Java

Microservices

API Security

Design Patterns

Git

TDD

Tools

Terraform

AWS

JMeter

HAProxy

nginx

Job description

Contribute to development & scaling of high throughput, high availability, public-facing multi-tenanted application, in a fast-growing Series-A-funded startup environment.

Design, implement and maintain libraries and abstractions for internal teams to build upon to extend application functionality

Develop & maintain secure, performant and simple-to-integrate APIs for internal, B2B and public consumers required skills and experience: Excellent Java (JDK 8 or newer)

Solid understanding of web technologies: HTTP, DNS, at home in Chrome Developer Tools

Has used simulated load (JMeter/Gatling/wrk2 etc) and JVM profiling to identify and fix performance bottlenecks

Experience running microservices in production

Strong at the usual best practices stuff: git, TDD, OOP principles (SOLID, design patterns etc)Bonus points for: Kotlin

API Security (OAuth2, SAML, JWT etc)

Experience with reverse proxies (HAProxy, Envoy, nginx etc)

Terraform+AWSOur stack:

Required Skills:

Engineer Nginx Microservices Load Design Patterns OOP Metrics Availability Git Security MySQL Java Design

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Created on 22/06/2025 by TN United Kingdom