Stephen Samuel Email and Phone Number

Architected and lead the rebuild of the product catalog that underpins much of ShopRunner's ecommerce offering. Now replatforming the orders system.Techs: Kafka, Kotlin, FP, Postgres, Elasticsearch, React

Architected and lead the rebuild of the product catalog that underpins much of ShopRunner's ecommerce offering. Now replatforming the orders system.Techs: Kafka, Kotlin, FP, Postgres, Elasticsearch, React

Designed and implemented an SQL Engine for Kafka and Pulsar. This includes a hand coded recursive descent parser with advanced autocomplete. Support for browsing and streaming modes. Query execution and optimization. JDBC driver.Parser and engine built in Scala.JDBC driver built in Kotlin.Other services built in Java 8 and Spring Boot

Designed and built a Spark based calculation engine for the Treasury team at Deutsche Bank.Technologies included Scala, Spark, Hadoop, Hive, Elasticsearch, Akka

Working in market risk on a "Big Data" project.Techs: Scala, Spark, Spark SQL, Hive, Kafka, Cloudera, Akka

Member of a team building R&D projects in the Financial Crime Unit.Focusing on Scala / Spark / Hadoop big data solutions.Deployed Spark applications into production.Responsible for infrastructure and devops in the R&D hackathons.Scala, Spark, GraphX, Hadoop, Hive, Spray, Akka, Elasticsearch, Angular, Mongo.

A member of the Goldman Sachs team working on the 'Marquee Web' project.Responsibility as the principal Scala developer.Scala, akka, angularjs, mongo, vertx.

Lab49 is a technology consulting firm that builds advanced solutions for the financial services industry.

Technical architect and lead developer on a greenfield Scala project bringing together the company's products under a new messaging based platform. Introduced Scala to the company and acting as Scala mentor to the backend team, and moral support to the frontend team. Other technologies include Akka, Camel, Rest, Neo4J, Scalatra, and the rest of the usual frameworks.

Technical architect for the Java projects at othermedia.com.Developing the greenfield ECB (English Cricket Board http://www.ecb.co.uk) real time stats platform, delivering in-play events for live matches. Developed in Scala, with ActiveMQ, Apache Camel, MongoDB, and Jersey.Also leading the rebuild of the Harper Collins reference library website. This is the ultimate in SOA architecture with multiple components providing different datasets and functionality all interfacing via rest services. Technology stack is Scala, Jersey, Spring, Hibernate, CAS, Spring Security, MySQL.

Architected the mobile platform. This was an external API aimed at delivering services such as authentication, wallet, registration, prematch and live sportbook events to mobile, tablet and other low-power, bandwidth restricted and latency sensitive devices.The API was a greenfield project that involved replacing existing services that did not scale to the mobile channel, and implementing new services that were previously unable to non desktop users.

The first project was to architect and implement a greenfield Java middleware system that aggregates incoming data from partners and then provides this data through a service layer for the front end services. The multi-threaded solution (utilizing Java 1.6 concurrency packages) processes millions of records from several sources (XML/JSON/CSV/SOAP) on a continuous cycle. The data is accessed through a REST service layer provided by JAX RS/Jersey. Transactional support is implemented by Spring backed by JTA. For data aggregation a custom rule engine was built that provides plug and play support at runtime for various rule algorithms that leverage Solr.The second project was a rebuild/migration of the legacy reports CMS system into Java. The main enhancement was the addition of a data warehousing system for traffic/revenue data from advertising partners. A typical ETL solution was employed, extracting data from the various partner APIs (Google adsense, Omio, etc) and report feeds (Google Analytics, Urchin, etc) and transforming them into a standardised format. The data was made available via REST (Jersey) services and this was consumed on the client side by a GWT frontend.All development was agile, utilizing test driven development where appropriate and incorporating elements of domain driven design . Daily scrums were held each morning consisting of a scrum master and scrum members of 4 to 6 people.Technologies used: Spring 3.0, myBatis, JDBC, Jersey, Eclipse, Maven, Hudson, Tomcat, MySQL, Subversion, Core Java 1.6 concurrency, GWT, EXT-GWT, Agile, Scrum, TDD, Junit, Mockito, Guava, Apache libraries, XML, JSON, Javascript.

I joined Mind Candy as a contract Java/Spring developer to develop middleware for two projects. Firstly, one that would connect their user database to a third party email delivery platform for continuous synchronization. Secondly for delivery of all transactional emails from their billing system through this third email email platform to ensure guaranteed deliverability. The user database consisted of 25 million users and is expected to grow to 100m plus by 2011 and the project had to take this into account. The synchronization system was Hibernate and Spring based and generated CSV files for upload via SFTP daily. The process required complicated logic as the ESP's database required information to be supplied that was not available in the main database and the main code-base was not able to be modified.The transactional email system evolved into a drop in replacement for all email delivery into the entire application. Previously, emails were delivered programatically via Java Mail with no fail-safe. I implemented a message queuing system that took requests for email delivery and these requests were dispatched to an email service provide with guaranteed delivery. This system was ApacheMQ based with rules written in Apache Camel.Test driven development and scrum was used extensively throughout the projects, employing the usual daily standup, burn down charts, and two week sprints.Technologies used: Spring, Hibernate, Messaging, ActiveMQ, Apache Camel, JAXB, JAX-WS, JAX-RS, Eclipse, Maven, Husdon, PostgresSQL, JDBC, Core JAVA 1.6, Subversion, RESTEasy, XML

Contract position to integrate back office systems with third party payment processors and suppliers for stock fulfilment. All development in Java using various web services.

Permanent position as a senior software integrator. The company required a developer with extensive Java experience to learn the newly acquired 'Netonomy' API and then work with the EMEA teams in further development of the product. Required skills in core Java, JMS, Servlets, and related EE APIs.

Team leader of 3 developers involved in development of a greenfield CMS product. Introduced test driven development and agile methodology to the company. The CMS is now in use by over 500 customers throughout the UK. The software utilizes a wide range of JEE and JSE APIs and integrates with various third party products. We deployed on Linux servers with Caucho Resin 2/3 or Tomcat 5/6. Also responsible for client facing duties: pre-sales, progress meetings, and some training sessions.

Joined this medium sized IT distributor in 2002 to develop a new front end website and backend systems for stock control, purchase order management, price and stock web services for account customers, courier integration, bar-coded dispatch and picking systems, fraud detection methods. Most systems written in Java, including Swing based front end GUIs.