Julian Bell, Software Developer in Perth, Western Australia, Australia
Julian Bell

Software Developer in Perth, Western Australia, Australia

Member since March 1, 2017
Julian is a full-stack developer with over a decade of commercial software development experience, including architectural design. He's extremely knowledgable about Java, Kotlin, and agile methodologies, plus he's a hard-working and fun addition to any team.
Julian is now available for hire


  • FlowCrypt
    Kotlin, Gradle Kotlin DSL, OpenID Connect, Koin, KMIP, Semaphore
  • Onyx Services
    Java 8, Maven, Bamboo, Spring 5, Spring Boot 2, Spring Integration...
  • BP
    Java 8, Gradle, Azure, Azure DevOps, Spring 5, Spring Boot 2, Spring WebFlux...



Perth, Western Australia, Australia



Preferred Environment

Linux, Windows

The most amazing...

...project I've implemented is a secure voucher system used across Europe by a major media organization.


  • Kotlin Security Developer

    2019 - 2020
    • Implemented using lightweight Kotlin libraries such as Javalin and Koin.
    • User security implemented using OpenID Connect & JWT.
    • Continuous integration using Github and Semaphore CI.
    • Used an existing KMIP client implementation and updated to use TLS 1.2.
    Technologies: Kotlin, Gradle Kotlin DSL, OpenID Connect, Koin, KMIP, Semaphore
  • Senior Java Developer

    2019 - 2019
    Onyx Services
    • Migrated existing Java applications.
    • Implemented extensive security overhauls and other requested changes on existing projects.
    • Worked in an Agile team consisting of three developers, two testers and two Scada engineers.
    • Migrated and updated crucial applications from Western Power to AEMO.
    • Updating all applications to Java 8 and the latest Spring and Spring Boot.
    • Implemented continuous integration using Bamboo.
    • Integrated applications to authenticate with Active Directory using Spring Security and UnboundID LDAP.
    • Delivered all projects on time and budget.
    Technologies: Java 8, Maven, Bamboo, Spring 5, Spring Boot 2, Spring Integration, Spring Security, UnboundID LDAP, Oracle, Spring Data JPA, Hibernate, Hikari, Project Lombok, Logback, AssertJ, Mockito
  • Software Developer

    2017 - 2018
    • Worked in Agile teams consisting of a back-end developer, a front-end developer, a QA, a BA, and a product owner.
    • Developed simple REST API Spring Boot 2 back-end applications using a combination of blocking and non-blocking (Reactive) endpoints.
    • Designed and implemented a learning management system so that mistakes are recorded and ideally not made again by people working on similar projects.
    • Co-developed a hopper system to record all of the information about hoppers and wells which is then analyzed using machine learning tools.
    • Implemented Java Azure AD security libraries to help with OpenID Connect (JWT) protocol. This includes on behalf of access for BE to BE security integration.
    • Utilized the Azure Graph API for AD queries.
    • Migrated existing projects from Maven to Gradle and deployed to Azure using the Azure DevOps (VSTS) pipelines.
    • Handled DevOps requests for Azure Portal and Azure DevOps (VSTS) infrastructure.
    Technologies: Java 8, Gradle, Azure, Azure DevOps, Spring 5, Spring Boot 2, Spring WebFlux, Spring Data JPA, Spring Security, Jackson, OpenID Connect, Sql Server, Postgres, Flyway, Hibernate, Envers, QueryDSL, Project Lombok, Guava, Swagger, Apache POI, Cucumber
  • Software Developer

    2014 - 2016
    Now TV
    • Designed and implemented a voucher management system for the UK which will soon be rolled out across Europe.
    • Worked within a team to implement high concurrency microservices for our purchasing and billing applications.
    • Ensured that the deployments were made with ease using Jenkins and Cloud Foundry.
    • Implemented a working prototype of a JavaRX and a Retrofit application.
    Technologies: Java, Scala, Gradle, Cloud Foundry, Spring 4, Spring Boot, Spray, Akka, Spring Security, HATEOAS, OAuth 1, Active Directory, MariaDB, Flyway, UnboundID, Quartz, Swagger, JavaRX, Retrofit, Specs 2, Cucumber, REST Assured, WireMock, ScalaTest
  • Software Consultant

    2013 - 2013
    British Gas
    • Gathered requirements, designed, and implemented a solution to store boiler metrics for all online customers.
    • Coordinated with a third party to implement a REST API solution using JSON.
    • Stored all boiler metrics in HBase using a JDBC interface (Phoenix), ready for analytics.
    Technologies: Java, Groovy, Gradle, Debian Packages, Spring 3.2, Joda, Jackson, HBase, Phoenix HBase Client, Spring Security, Tomcat JDBC, Hibernate Validation, JDBI, DBDeploy, Jenkins, Vagrant, VirtualBox, Gatling, Fest, JUnit, Mockito, Cucumber
  • Software Consultant (Contract)

    2009 - 2013
    Sky UK
    • Added an API to the Sky search engine to allow all Sky departments to index their content for retrieval by any team.
    • Wrote the new Query API to allow other Sky teams to access content via Atom or RSS feeds (using Rome).
    • Implemented Spring security on all existing projects.
    • Added HTML editorial layers into our search views based on keyword matching.
    • Added improved technologies to the existing project; such as Quartz, JAXB, Hibernate with annotations, Rome, and Mockito.
    • Crafted the architectural design and implementation for the new guided search project.
    • Implemented a distributed caching system using Ehcache, JGroups, and Spring.
    • Developed two different prototype content recommendations engine from scratch and a user recommendation engine using Mahout.
    • Worked with a team to implement the metadata repository for all Sky content.
    • Designed and cowrote a real-time image scaling service for Sky users.
    • Rewrote the back-end auto-suggest service.
    • Designed and implemented a stateless security system for our REST APIs using Spring Security.
    • Implemented an automatic data archiving solution using Quartz and MySQL list partition tables.
    Technologies: Java, J2EE, Spring 3.1, Spring MVC, Spring Security, REST, Quartz, Hibernate, JAXB, Rome, Ehcache, JGroups, Memcached, Hadoop, Mahout, Jetty, Tomcat, JSP, jQuery, DisplayTag, Autonomy Idol, Eclipse, Oracle, MySQL, Linux, Shell Scripts, Ant, Mockito
  • Senior Java Developer (Contract)

    2008 - 2009
    The Guardian
    • Worked as a software developer in a team of approximately 50 on a fully agile project.
    • Worked in the continuous improvement team which sought to improve the reliability and speed of the web site.
    • Implemented with a team the blog pages.
    • Codesigned and implemented Google AdSense into the Guardian site.
    Technologies: Java, J2EE, Hibernate, Ehcache, Spring, Spring MVC, Velocity, Spring Security, Resin, Apache Tomcat, Eclipse, Oracle, Unix Shell Scripts, JavaScript, Ajax, Windows XP, Linux, JAXB, Mockito, Hamcrest
  • Java Team Leader (Contract)

    2006 - 2007
    Macquarie Bank
    • Designed and implemented a risk management (compliance) system. It aggregated all global share positions from all the different divisions and locations in Macquarie.
    • Designed the database schema, application project, and Java architecture. This application had a high volume of transactions so we went with a combination of Hibernate and stored procedures for the batch processes.
    • Communicated with the business users to gather the project requirements.
    • Acted as the technical lead in a team of 4 developers.
    • Suggested a redesign for the Macquarie leasing system, including remote/web services.
    Technologies: Java, J2EE, Hibernate, Ehcache, JSP, Display Tag, Struts, Spring/Acegi Security, Spring, JDBC, WebSphere, WebLogic, Apache Tomcat, Eclipse, Sybase, Unix Shell Scripts, JavaScript, Windows XP, Linux, Web Services
  • Senior Java Analyst/Developer

    2004 - 2006
    MBF (Bupa Australia)
    • Delivered technology services to MBF in support of strategic initiatives. This includes architecture designs and requirements gathering on new and existing projects.
    • Designed and implemented a wide array of applications for over two years.
    • Converted applications and data from a legacy mainframe system to a new J2EE environment.
    • Used a wide selection of complementary technologies - such as Tibco messaging (EMS/JMS), BusinessWorks, Optra Forms, Oracle 9i Java functions (running within Oracle), Crystal Reports, and TopLink.
    • Developed a retail management system used by all MBF branches around Australia.
    • Built a real-time report printing to any branch in Australia.
    • Created a new J2EE-based application to replace the front and back ends of the existing health insurance software.
    Technologies: Java, J2EE, EJB, JSP, Struts, JMS, Tibco Business Works, JDBC, WebLogic, JBoss, TopLink, Eclipse, Oracle 9i, Unix Shell Scripts, JavaScript, Windows 2000, Solaris OS



  • Languages

    Java, Kotlin, JavaScript, Groovy, Scala, ECMAScript (ES6)
  • Frameworks

    Spring, Spring Security, Hibernate, JUnit, Mockito, Spring Boot, Spring MVC, KOIN, Javalin, JavaServer Pages (JSP), Hadoop, Phoenix, Swagger, Akka, Bulma, WebFlux
  • Libraries/APIs

    REST APIs, Quartz, Jackson, Joda-Time, HikariCP, AssertJ, Selenium WebDriver, Mahout, JGroups, JAXB, JDBI, spray, RxJava, Retrofit, Vue.js
  • Tools

    Gradle, Cucumber, Jenkins, Flyway, REST Assured, WireMock, ScalaTest, Gatling, RPM, VirtualBox, Vagrant, Apache Ant
  • Paradigms

    Test-driven Development (TDD), Agile, Behavior-driven Development (BDD), Pair Programming
  • Platforms

    Azure, Linux, UnboundID, Oracle Database
  • Storage

    Spring Data, MySQL/MariaDB, Azure Active Directory, Sybase, Memcached, HBase, H2
  • Other

    KMIP, Ajax, EhCache, Specs, OAuth, HATEOAS, CloudFoundry, Bash Scripting, Axios


  • Bachelor's degree in Computer and Mathematical Sciences
    1997 - 2000
    University of Western Australia - Perth, Australia

To view more profiles

Join Toptal
I really like this profile
Share it with others