Senior Software Engineer · London, UK

Sushmitha
Shivashankar
Singh

Python · Data Pipelines · React · TypeScript
Design Systems · GenAI · Financial Services
Deloitte
SENIOR CONSULTANT
Barclays Investment Banking · Amazon Financial Services
Publicis Sapient
SENIOR SOFTWARE ENGINEER
US Bank Treasury · KFC Digital
Lowe's
SOFTWARE ENGINEER
Genesis POS · Omnia Checkout · Sprint Star Award
QMUL
MSC DATA ANALYTICS
Deep Learning · Computer Vision · Financial Risk Analytics
Python React 18 TypeScript AWS Glue PySpark GraphQL Design Systems GenAI PostgreSQL Docker · Kubernetes Semantic Data Modelling Apache Kafka PyTorch Node.js Python React 18 TypeScript AWS Glue PySpark GraphQL Design Systems GenAI PostgreSQL Docker · Kubernetes Semantic Data Modelling Apache Kafka PyTorch Node.js
01

The work. The person.

Seven years building systems that hold under pressure — at Barclays, US Bank, and Amazon, where data quality isn't optional and downtime has a price tag.

At Deloitte I engineered distributed ELT pipelines and analytics platforms for Barclays Investment Banking and Amazon Financial Services — Python on AWS Glue, star schema semantic data models, LLM-powered reporting interfaces. Before most enterprise teams were thinking about generative AI in production, I'd already shipped it.

At Publicis Sapient I designed the GraphQL BFF architecture for US Bank Treasury from scratch — subscription-based WebSocket connections keeping payment state consistent across 50K+ concurrent users. At Lowe's I built checkout infrastructure processing $1.6M daily transactions, earning a Sprint Star Award for analytics middleware that cut debugging time from 2 hours to 15 minutes.

Published ML researcher. Open-sourced methodology actively used by the marine biology research community. MSc Data Analytics, Queen Mary University of London.

7+
YEARS EXPERIENCE
150K+
RECORDS PER BATCH
84%
FRAUD DETECTION
340K
MONTHLY ACTIVE USERS
EDUCATION
MSc Data Analytics
Queen Mary University of London · 2024–2025
Deep Learning · Computer Vision · Financial Risk Analytics
UNDERGRADUATE
B.Tech Information Technology
Ramaiah Institute of Technology · 2011–2016
LOCATION
London, United Kingdom
Eligible for UK Skilled Worker sponsorship · Available immediately
CONTACT
sushmita.s.0721@gmail.com
+44 7404 375 453
02

Not a pivot. A convergence.

Frontend was the beginning — it built product instincts and taught how users interact with data. Every system at Barclays and US Bank had a data architecture problem underneath the UI problem. The MSc formalised what was already happening: owning the full system, not just the interface layer. The role the market is starting to name is AI Product Engineer — one engineer who designs the data model, builds the pipeline, integrates the intelligence layer, and ships the interface. Seven years of deliberately building across all three layers is exactly the preparation for it.

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Data Engineering & Analytics
Distributed ELT pipelines, semantic data modelling, OLTP/OLAP architectures, SLA-managed production datasets, GDPR-compliant data governance. Built for Bloomberg, JPMorgan, financial services at scale.
PythonAWS GluePySpark Star SchemaPostgreSQLKafka RedshiftSQL
Frontend & Design Systems
React component libraries, design token systems, Storybook governance, accessibility at scale, Vite build optimisation. Enterprise design systems serving thousands of users across multiple product teams.
React 18TypeScriptDesign Tokens StorybookGraphQLWCAG 2.1 AA Next.jsVite
GenAI & ML Research
LLM-powered data interfaces, ML model integration into production pipelines, published computer vision research. Shipped agentic AI into live financial workflows before most enterprise teams began exploring it.
LLM APIsXGBoostPyTorch Grad-CAMscikit-learnGenAI Computer Vision
03

Where I've built things.

2023 — 2025
Deloitte
London · Bangalore
SENIOR CONSULTANT — DATA & ANALYTICS ENGINEERING
Barclays Investment Banking · Amazon Financial Services
  • Engineered high-volume Python ELT pipelines on AWS Glue/PySpark processing 150K–200K financial records per batch into PostgreSQL and Redshift — 28% latency reduction, same-day regulatory reporting under FCA compliance
  • Designed metadata-driven star schema semantic data models across OLTP/OLAP — reusable Python ETL shared libraries across 3 risk platform teams, 94% pipeline reliability across 12 SLA-managed datasets
  • Pioneered GenAI + ML integration into live data pipelines — XGBoost fraud detection (84% accuracy) as LLM-powered data interfaces before most enterprise teams ran agentic AI in production
  • Built 60-component React/TypeScript design system with Storybook and design tokens — reduced feature delivery from 6 weeks to 3.5 weeks across 8 product teams
  • Implemented GDPR-compliant entitlement-level audit workflows across 340 AWS endpoints — zero regulatory flags in Q4 2024 external compliance review
PythonAWS GluePySpark ReactTypeScriptLLM APIs XGBoostTableauDockerKubernetes
2021 — 2023
Publicis Sapient
Bangalore
SENIOR SOFTWARE ENGINEER — FULL-STACK
US Bank Treasury · KFC Digital
  • Designed GraphQL BFF with Apollo Server from scratch — WebSocket subscriptions keeping structured payment state consistent across 50K+ concurrent OLTP users at 99.2% uptime
  • Shipped LLM-powered conversational features handling 12K+ queries weekly in regulated banking before GenAI tooling existed in this space
  • Built 40+ React/TypeScript components with Apollo Client normalised caching — drove mobile conversion from 18.2% to 22.5% across 340K MAU via A/B testing
  • Reduced WCAG violations from 240 to 15 across 6 banking applications — mitigated £400K ADA litigation risk
ReactTypeScriptGraphQL Apollo ServerWebSocketGPT APIs Node.jsPostgreSQL
2016 — 2020
Lowe's
Bangalore
SOFTWARE ENGINEER — FRONTEND
Genesis POS · Omnia Checkout
  • React checkout processing $1.6M daily transactions with 8,400 peak concurrent users — Redux-Saga across Stripe, PayPal, Affirm, Apple Pay
  • Won Sprint Star Award (May 2020) — Redux-Saga analytics middleware cut debugging from 2 hours to 15 minutes, improved system performance 30%
  • Webpack optimisation: bundle 1.8MB → 1.1MB (40%), page load 3.8s → 2.5s (35%)
  • Established Jest/Cypress standards (487 unit tests, 52 E2E, 87% coverage) across 3 squads
ReactRedux-SagaJavaScript WebpackJestCypress
04

Selected projects.

DATA ENGINEERING · PRODUCTION · 2023–2025
Barclays IB — Distributed Analytics & ELT Platform

End-to-end analytics platform built for Barclays Investment Banking — Python ELT pipelines on AWS Glue processing 150K–200K financial records per batch, star schema semantic data models, Tableau executive dashboards, and LLM-powered reporting interfaces replacing 72-hour manual workflows.

↳ 72h → 6h reporting cycle · 94% pipeline reliability · 84% fraud detection
PythonAWS GluePySpark PostgreSQLRedshiftTableauXGBoost
FULL-STACK · REAL-TIME · 2021–2023
US Bank Treasury — GraphQL BFF & Payment Dashboard

GraphQL Backend-for-Frontend with Apollo Server designed from scratch covering all treasury payment flows. Subscription-based WebSocket connections for concurrent OLTP state consistency. 40 React/TypeScript components, LLM-powered conversational features, A/B tested across 340K MAU.

↳ 50K+ daily users · 99.2% uptime · 24% conversion improvement
GraphQLApollo ServerReact TypeScriptWebSocketGPT APIs
DESIGN SYSTEM · ENTERPRISE · 2023–2024
Barclays Private Banking — Enterprise Design System

60-component React/TypeScript design system built from scratch with design token architecture, Storybook documentation, and Chromatic visual regression testing. Published as npm package. Vite migration cut bundle by 39%, load time by 45%. Served 8,000+ daily users across 8 product teams.

↳ 6w → 3.5w feature delivery · 94% test coverage · 8 teams
ReactTypeScriptStorybook Design TokensViteChromatic
ML RESEARCH · OPEN SOURCE · 2024–2025
SeaTurtleID2022 — Deep Learning Re-Identification

MSc dissertation: domain-generalised image re-identification model eliminating identity leakage bias in computer vision. PyTorch, TorchReID, OSNet with Grad-CAM interpretability. Two papers published. Open-sourced evaluation methodology actively used by the marine biology research community.

↳ 89% recognition accuracy · 2 papers published · Open-sourced
PyTorchTorchReIDOSNet Grad-CAMPythonComputer Vision
05

Recognition & research.

AWARDS
Sprint Star Award
LOWE'S · May 2020 · Signed by Dayal Murukutla, Director of Software Engineering
"Sushmitha has done an excellent job of implementing the Analytics stories for the Omnia checkout project by leveraging the latest Redux-Saga middleware technology stack." — Reduced debugging from 2 hours to 15 minutes, improved system performance by 30%.
Extra Mile Award
PUBLICIS SAPIENT · 2019
Awarded for developing innovative data visualisation solutions that enhanced trader decision-making and reduced operational risk across financial platforms.
Accessibility Excellence Award
PUBLICIS SAPIENT
Led WCAG 2.1 AA compliance initiatives across 6 banking applications — reduced violations from 240 to 15 issues, achieving 94% compliance and mitigating £400K ADA litigation risk.
PUBLICATIONS
Time-Aware Evaluation Methodology for Marine Wildlife Re-Identification: Eliminating Identity Leakage Bias
MSc Research · Queen Mary University of London · 2024–2025
Domain-generalised evaluation framework eliminating temporal identity leakage in wildlife re-identification. Open-sourced methodology actively used by the marine biology research community. Built with PyTorch, TorchReID, OSNet, Grad-CAM.
Advanced Credit Risk Analysis with Machine Learning
Research Publication · 2024–2025
Comprehensive analysis applying Python ML algorithms to credit risk modelling — ensemble methods, feature engineering, and interpretable deep learning with Grad-CAM for regulatory explainability in financial risk assessment.
06

The full stack.

DATA ENGINEERING
  • Python · PySpark · Pandas · NumPy
  • AWS Glue · ELT/ETL Pipelines
  • Star Schema · Semantic Data Modelling
  • OLTP / OLAP · SQL (advanced)
  • Apache Kafka · Event-Driven Architecture
  • PostgreSQL · Redshift · MongoDB
  • Databricks · Apache Spark · Hadoop
  • SLA Management · Data Governance
  • GDPR · Entitlement Frameworks
FRONTEND & FULL-STACK
  • React 18 · Next.js · TypeScript
  • GraphQL · Apollo Server/Client
  • Design Systems · Design Tokens
  • Storybook · Chromatic · Vite
  • WebSocket · Redux-Saga
  • Node.js · Express · FastAPI
  • WCAG 2.1 AA Accessibility
  • Jest · Cypress · Playwright · TDD
  • D3.js · Tailwind CSS
AI · ML · INFRASTRUCTURE
  • LLM APIs · GenAI · Agentic AI
  • PyTorch · TensorFlow · XGBoost
  • scikit-learn · Grad-CAM
  • Computer Vision · Deep Learning
  • AWS (Glue, S3, Lambda, EC2, Athena)
  • Docker · Kubernetes · Linux/Unix
  • GitHub Actions · Jenkins · CI/CD
  • Datadog · JWT/RBAC
  • MSc Data Analytics · QMUL
07

Let's build something.

Open to Senior Software Engineer roles in London — data engineering, full-stack, product engineering.

Eligible for UK Skilled Worker sponsorship. Available immediately. Currently targeting Bloomberg, JPMorgan, Snyk, Airbnb, and Attio — always open to the right conversation.