Francis Stephens Email & Phone Number

New Zealand

Migrating a video streaming management app from a single private database to a shared product suite oriented datastore system.Mentoring and assisting more junior developers to build competency across the team.

North Rhine-Westphalia, Germany

Built a large scale system for blockchain metrics ingestion and storage.The system is built around multiple Kafka consumers ingesting and transforming metric datainto two tiers of database system. One for short retention, fast querying and the second for long retention and slower machine learning directed queries.

Berlin Area, Germany

Established a performance improvement process: profile -> code change -> measure impact.Applied this process repeatedly, prioritising reducing memory allocations.Built tools to manage very large collections of profiles and related performance data. One very clear problem we faced was the high degree of variability in production environments. To improve.

London, England, United Kingdom

First technical hire for London startup.Running Go code on the Google App Engine platform.

Leeds, England, United Kingdom

Building trading systems for generating prices for online gambling.Reliable latency was a strong requirement for both user experience and to prevent pricearbitrage opportunities.In one project I reduced a system’s latency from worst-case 1 minute per message to 1second per message by simplifying the code modeling the state of a sports match anddrastically.

London, England, United Kingdom

Developing a reference architecture for a large scale internal systems project.Emphasis on simplicity of development and service interface stability.Requirements covering trade capture and financial reporting to multiple stakeholders.

London, England, United Kingdom

Developing a complex financial trading management system in London.Simultaneously maintaining a production system while developing further iterations forfuture release.Project driven by an Agile story based approach combined with automated unit andintegration testing.Challenging business domain integrating many international trading systems and.

Wellington, Wellington Region, New Zealand

Consulting for ACCSuccessfully developed and deployed a major rewriting of ACC's claims management systemwith a Sybase database and java back-end and Swing rich client.Successfully fixed a critical performance issue that appeared in production. The solution to this problem demanded a very high degree of technical competency coupled with stronginterpersonal.

Palmerston North, Wanganui-Manawatu, New Zealand

Undertook research in mathematical and algorithmic bioinformatics.Produced highly modular, high performance, implementation of a novel graph basedalgorithm (~10,000 lines of Java code)Extended an existing project, Graphmaker 3001, producing a highly extensible general graphalgorithms framework (~14,000 lines of new Java code).

Canberra, Australian Capital Territory, Australia

Summer Research Scholarship at ANU Canberra.Attended Logic Summer School as part of the Research Scholarship.Engaged in research over a period of two and a half months developing and implementing a theorem prover in the Sequent Calculus for Modal Logic KtS4 (bi-directional tense logic).