Senior Scala Developer London

Skills

• agile
• AMPs
• Ansible
• AWS Fargate
• Azure DevOps
• Cats Effect 2
• Cats Effect 3
• CI/CD pipelines
• Circe
• CloudHSM
• Docker
• Doobie
• Drupal 8
• DynamoDB
• Elixir
• Enterprise AI platforms
• FS2
• Functional Programming
• Http4s
• Java
• Jenkins
• JSON
• Kafka
• KMS
• Kubernetes
• Microservices architecture
• Monix
• Natchez
• Pair Programming
• PHP
• PhpUnit
• PostgreSql
• RabbitMQ
• REST APIs
• Ruby
• SaaS backend services
• SaaS platforms
• Scala
• scrum
• Selenium
• Skunk
• Streaming over HTTP
• STS
• TDD
• Terraform

Experience

Aug 2025 - Present

Senior Scala Developer at Writer

– Writer is an enterprise AI platform offering proprietary LLM models and a SaaS solution for integration into business operations.
– Part of the Enterprise Admin backend services team.
– Developing backend services that support enterprise features such as user management, billing, and reporting.

Oct 2023 ‐ Jun 2025

Senior Scala Contract Developer at Bank of America

– Part of the Global Markets Operations Technology team.
– Developing applications that process streams of financial data using Cats Effect 3 and fs2, with AMPS as the messaging backbone.

Apr 2023 ‐ Oct 2023

Senior Scala Contract Developer at Coremont

– Part of the Trading Tech team, working on the OMS of the Clarion SaaS platform.
– Extending the backend to ingest and process trades on loan instruments.
– Trades are fed from Kafka topics and processed using fs2 and Cats Effect.

Jan 2022 ‐ Mar 2023

Lead Software Engineer at orgvue

– Led the Backend Services team, overseeing the design and development of services powering the orgvue platform.
– Implemented a new service architecture based on the Typelevel stack using Cats Effect 3.
– Developed API endpoints using http4s and circe, with fs2 handling SQS message streaming and advanced control flow.
– Managed database persistence with skunk and tracing using natchez.
– Served as the main contact for the DevOps team, providing requirements and feedback on the CD pipeline.

Oct 2019 ‐ Jan 2022

Senior Software Engineer at orgvue

– Orgvue is a workforce planning SaaS platform enabling organizations of varying sizes to adapt their structure efficiently.
– Senior member of the Backend Services team developing the platform’s core services.
– Service APIs are built with http4s, using fs2 and Monix observables to support streaming-over-HTTP for large payloads (>100MB) to React clients.
– Services are deployed on AWS Fargate, using DynamoDB for scheduled job data and KMS, STS, CloudHSM for per-customer data encryption.
– Designed and implemented CI pipelines for testing, versioning, and publishing packages and service deliverables via Azure DevOps YAML pipelines.

Dec 2018 ‐ Oct 2019

Senior Software Developer at CurrencyCloud

– Led the design and development of the next-generation payments processing platform using http4s, circe, and Cats Effect 2 for the JSON endpoint layer.
– Conducted pair programming sessions to help Ruby engineers become familiar with the Scala codebase and functional programming design.
– Applied TDD to increase confidence in the Scala code among the predominantly Ruby engineering team.
– Used fs2 for RabbitMQ message streaming and doobie for database operations.

Sept 2017 ‐ Dec 2018

Middle Software Developer at CurrencyCloud

– CurrencyCloud is a global SaaS payments platform enabling the efficient transfer of over $2 billion internationally; acquired by Visa for $1 billion in 2021.
– Member of the Technical Delivery team, refactoring the platform toward a scalable microservices architecture.
– Managed CI pipelines for running unit tests on each PR using Jenkins and Ansible.
– Followed Agile Scrum methodology, applying TDD and occasional pair programming for complex tasks.
– Acted as liaison with the Infrastructure Team, supporting Terraform definitions for an upcoming Kubernetes migration.
– Participated in initial pilots refactoring low-risk services to functional Scala before scaling to the main payments platform.

Jun 2014 ‐ Aug 2016

Software Engineer at Upstream SA

– Tech lead for Upstream’s mobile rich content and multimedia gaming platform.

Education

Sept 2016 ‐ Sept 2017

MSc Advanced Computing ‐ Distunction at Imperial College London

– Design and implementation of an automated tool for deploying a horizontally scalable HTC cluster across interconnected Linux machines using Docker.
– Deployment of a scalable Slurm-based HTC cluster on Kubernetes with GlusterFS as a distributed storage solution.
– Development of a custom autoscaler demonstrating policy-driven autoscaling for HTC workloads.
– Theoretical and practical work on PCA for dimensionality reduction, as well as LDA and SVM classification using kernel methods.
– Application of linear and Bayesian regression for parameter estimation and model selection.
– Study and implementation of reinforcement learning techniques, including Monte Carlo methods, SARSA, and Q-learning.
– Theoretical foundations and applied projects involving Stochastic Hopfield Networks, Restricted Boltzmann Machines, and Deep Belief Networks.
– Design and training of Feedforward Neural Networks and Convolutional Neural Networks.
– Architectural analysis of large-scale distributed systems, including Google Bigtable, Amazon Dynamo, Apache Kafka, Google Spanner, and Apache Spark.
– Theoretical evaluation of graph databases and document-oriented data stores.
– Study of distributed algorithms for consensus, synchronization, and leader election.
– Practical implementation of distributed algorithms using Erlang in a Docker-based environment.
Security analysis and theoretical study of cryptographic primitives, including block ciphers, hash functions, MACs, RSA, and Diffie–Hellman.
– Examination of blockchain technologies, with a focus on Bitcoin and underlying cryptographic mechanisms.

Sept 2008 ‐ Jun 2015

M.ENG Electrical and computer engineering at National Technical University of Athens

– Grade: 8.0/10 | Master’s Thesis: Smart Grid Information Security (10/10) | Topics: Network security; Linux kernel programming (drivers, system calls); parallel programming (MPI, OpenMP, Cilk, CUDA); functional programming; fuzzy control; video streaming network simulation; biomedical simulations