Senior Open Source Software Architect (remote work)

Description

Job Description
Work on a cutting edge cloud based financial web application on a PAAS (Jelastic) infrastructure with a team of top level engineers & developers.

We are looking for a freelance (not an offshore company) senior open source system & software architect, with good knowledge of PAAS, and various open source components. Good communication, excellent documentation.

Tasks / Duration: Lead, manage, and co-develop with a team of 4 Java developers (2 senior). Flexible but minimum half-time, for 2 consecutive 6 months periods.

Manage Overall Development:

Manage each team member tasks and organize them for delivery using Atlassian On Demand Jira

Set Milestones and organize releases in an Agile way (Jira Agile)

Manage releases rollout to Jelastic UAT environment

DB Model: Setup Data Model (with Lead developer)

Software Architecture: Manage and enhance an existing software infrastructure designed on the Jelastic PAAS platform (prior knowledge of Jelastic platform preferable but not necessary):

Jelastic Topology and Configuration

Infrastructure diagrams and requirements

Software components interactions

Nodes / Servers: GlassFish, PostgreSQL, MongoDB, Memcached, Nginx, Repose, CentOS, Oracle, pgBARMAN

VDS in a PAAS environment (CentOS):

Oracle DB (for S&P CapitalIQ XPL Financial Data)

Repose Rate Limiting RESTful HTTP Reverse Proxy

BARMAN PostgreSQL DB (wal) backup with cron

Remote: The candidate will have to work remotely and participate in frequent Google Hangout meetings. Preferable english mother tongue, but fluency in English acceptable.

P/T - F/T: Possibility of part-time contribution on a minimum of 3 months basis. This type of arrangement would be based on a project component oriented task.

Knowledge: of equity valuation, accounting valuation principles, and financial markets a plus.

Collaboration Tools

Atlassian Suite

Jira: Bugtracking tool

Confluence: Project Management tool linked to Jira

Bonfire: Jira addon to produce tests and automatically create issues based on test outputs.

Google Docs (Spreadsheets & Text Documents)

Remuneration: Commensurate with qualification and experience. Very competititve.

Skills & Requirements

Knowledge of a wide variety of Open Source Components:

Programming Languages Used:

Java EE 6/7 + JDK 7.

JEXL (Java Expression Language) Version: 2.1.1 (no need of prior knowledge)

JavaScript Version: 1.8.5

HTML5

Principal Components

Jelastic PAAS

Linux (CentOS)

GlassFish, PostgreSQL, Nginx, MongoDB, Memcached

SQL / NoSQL

JEE, JPA2, JSF2, JMS, EJB3

Primefaces

REST (JAX-RS)

JEXL (no need of prior knowledge)

Detailed Components

Application Server

Oracle Glassfish Community Edition: High performance/small footprint/modular Java EE6 certified Java Application Server. (Version: 3.1.2.2)

Cluster Reverse Proxy / Front-ends / Load Balancers

Nginx (Load Balancer / Failover proxy for the website). (Version: 1.4.1)

Repose (Rate Limiting/Authentication reverse proxy for RESTful web services). (Version: 2.11)

SQL Database Server

PostgreSQL (Version: 9.2.4)

DB Backup: PostgreSQL Database Server Backup Component

BARMAN (Point-in-time backup and recovery manager for PostgreSQL using WAL archive backups. It is a pure disaster recovery solution. It is responsible for the sole backup of a cluster of PostgreSQL servers). (Version: 1.2.3)

noSQL Database Server

MongoDB (Version 2.4)

Database Cache

Memcached (a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load). (Version: 1.4.15)

Operating System

CentOS (Version 6.4)

Development Tools

Atlassian On Demand (Jira, Confluence, Bonfire, Bitbucket)

Netbeans IDE

IntelliJ IDEA

Arquillian (testing platform for the JVM that enables developers to easily create automated integration, functional and acceptance tests for Java middleware)
JUnit (A programmer-oriented testing framework for Java)

Maven (Software project management and comprehension tool. Manage a project's build, reporting and documentation from a central piece of information)

About SENTAI
SENTAI is a London & Paris based consulting and Open Source development group bringing together multiple talents from the IT & Scientific world.

Our clients are medium to large sized financial institutions, and we provide consulting services and cloud ready web application development services.