Dan

Senior Software Engineer with 7+ years building high-performance, event-driven platforms across fintech/ecommerce/asset-management. Owns features end-to-end in Python, Node.js, TypeScript/JavaScript, React/Next.js, shipping robust Kafka pipelines, low-latency APIs, and PostgreSQL/Redis data layers on AWS/GCP.

Champions

GraphQL BFFs, RESTful integrations, Docker/Kubernetes, and Terraform CDK; mentors engineers and applies LLM/RAG to accelerate internal tools and analytics.

Software Developer at LMR Partners (2022-02 – Present)

Building high-performance, event-driven platforms for fintech with focus on real-time market data processing, GraphQL backends, and risk management systems.

• Built a real-time market-event ingestion layer: Kafka topics partitioned by venue/symbol, Python/Node.js microservices performing schema normalization and dedup, and Redis for fan-out caches; sustained >1M msgs/min bursts with p99 processing <50 ms, feeding PostgreSQL OLTP tables for downstream analytics.
• Designed a GraphQL BFF atop existing REST microservices to compose trading, risk, and reference-data queries into single round-trips; implemented persisted queries, field-level auth, and response caching to cut dashboard over-fetch by ~35% while hardening typing via SDL.
• Delivered a React/Next.js risk & PnL telemetry UI with live subscriptions (websockets over Kafka bridge) and optimistic updates; achieved sub-second UI latency on watchlists of 2–5k instruments; feature-flagged rollouts with automated canaries.
• Hardened data quality & lineage: added idempotent ingestion semantics, clock-skew compensation, and DLQ reprocessing; wrote Python validators with Great Expectations-style checks, pushing alerts to Slack via webhook workers.
• Modernized reporting services by carving monolith jobs into AWS Lambda functions behind API Gateway and event triggers (S3 notifications, EventBridge); reduced runtime cost ~40% and improved elasticity for month-end crunches.
• Productionized CI/CD: GitHub Actions with matrix tests (Node/Python), contract tests for GraphQL/REST, IaC via Terraform CDK; blue/green to ECS/Fargate, automated DB migrations with zero-downtime strategies.
• Introduced LLM-assisted internal tooling: a lightweight RAG service indexing runbooks & API schemas (Pinecone/Weaviate), with retrieval evaluators and prompt-unit tests; decreased on-call TTD for common incidents by >25%.
• Team impact: mentored 2+ engineers, ran perf clinics (heap/CPU profiles), authored API guidelines and Kafka naming conventions; partnered with PMs/ops to align SLAs with trading desks.

Software Engineer at Alfa Financial Software (2018-10 – 2022-02)

Full-stack development on Alfa Systems modules for loan/lease originations and contract servicing workflows, including backend services and React front-end.

• Full-stack delivery on Alfa Systems modules: built Node.js/TypeScript business-rule services for loan/lease originations and contract servicing workflows; exposed RESTful APIs and a GraphQL layer for client configurability and reduced chattiness.
• React front-end for operations: created underwriting and collections screens with schema-driven forms, role-based entitlements, and data-grid virtualization; localized multi-region validation rules.
• Performance/cost wins: introduced Redis read-through caching for reference data and PostgreSQL index/tuning strategies; cut hot-path query latencies by 60–70% on peak portfolios.
• Reporting & BI integration: added export pipelines and pluggable data connectors to downstream BI; aligned with Alfa's real-time insights strategy and API-first posture.
• Interoperability & documentation: standardized OpenAPI/Swagger for partner integrations; hardened error taxonomies and idempotency; mirrors Alfa's emphasis on comprehensive web-service documentation.
• Delivery excellence: containerized services (Docker), deployed to AWS (ECS/RDS/S3) using Terraform; CI with GitHub Actions; drove code reviews and mentored grads on TypeScript and API design.

Master's Degree in MEng Aerospace Engineering – University of Bristol (2014 – 2018)