[ jnd0.dev ]

Public Professional Profile

Senior Backend Engineer

I combine architectural discipline with startup velocity. Building resilient cloud systems, accelerate CI/CD workflows, and turn complex requirements into shipping products.

For the complete CV and full chronology, email hey@jnd0.dev.

Experience

Senior Backend Engineer

Travel marketplace (UK)

2023 - Present · London / Hybrid

Architected core infrastructure for performance, reliability, and platform scale while improving developer delivery speed.

  • Modernized Infrastructure: Migrated legacy systems to a containerized AWS ECS architecture, establishing a robust CI/CD pipeline that enables faster, risk-free deployments.
  • Architected and shipped an internal AI assistant leveraging private organizational data to automate complex business queries.
  • Tuned Elasticsearch to consistently achieve sub-second latency and ensured seamless onboarding of business acquisitions.

Lead Backend Engineer

Social media startup

2022 - 2023 · London / Hybrid

Scaled backend infrastructure from zero in a fast-moving startup and supported rapid user growth.

  • Built Firebase backend systems from 0 to 15k+ active users.
  • Integrated Algolia and GCP services for search, monitoring, and moderation workflows.
  • Developed a full-stack Next.js competition app for a viral marketing campaign.

Senior Cloud Engineer

Global digital agency

2021 - 2022 · Remote

Delivered cloud platforms and data automation for enterprise clients with strong emphasis on cost and delivery speed.

  • Architected and delivered 5+ end-to-end serverless projects on AWS.
  • Led adoption of infrastructure as code with CDK and TypeScript across teams.
  • Engineered automated data pipelines for enterprise clients, optimizing for security and low-latency performance.
Earlier experience snapshot

Cloud Engineer and PHP Developer

Global digital agency

2018 - 2021 · UK

Earlier technical roles

Internships and support positions

2014 - 2018 · Spain and remote

Technical Skills

AI & Data Engineering

Integrating LLMs and tuning search for performance

LLM & RAG
OpenAI APIBedrockRAG Implementation
Search & Store
Elasticsearch (Performance Tuned)OpenSearchAlgoliaRedisValkeyBigQuery

Cloud & Infrastructure

Shipping and scaling cloud-native systems

Compute & Serverless
AWS ECSLambdaGoogle Cloud FunctionsDocker
IaC & DevOps
AWS CDKTerraformCloudFormationGitHub Actions
Platform
AWS (S3, SQS, IAM)GCP (Firestore)Cloudflare (Workers & CDN)

Core Backend & Architecture

Building reliable APIs and production services

Languages
TypeScriptNode.jsPythonPHP
Databases
MySQLNoSQL Design
Concepts
MicroservicesEvent-Driven ArchitectureSystem Design

Product Engineering

Delivering full-stack features with a focus on UX and speed

Frontend Frameworks
ReactNext.jsSvelteTailwind CSS
Quality & Automation
PlaywrightJestPuppeteer

Degree Highlight

2015 - 2018

BSc (Hons) Computing - First Class

University of Portsmouth

Best Engineering Project award

Designed and trained a deep learning CNN to recognize emotions from images using the Valence-Arousal model.

View paper (PDF)

Additional Education

HNC Web Development

IES Almata

2013 - 2015

Focused on C, Java, SQL, JavaScript, and PHP.

Computer Systems and Networks

IES Almata

2011 - 2013

Foundation in system administration and networking.

Human Layer

Soft skills

  • Project management
  • Team leadership and motivation
  • Communication
  • Delegation
  • Problem-solving
  • Mentoring and development

Interests

  • Music: guitar, bass, drums, bands, and DJing
  • Sports: playing and watching regularly
  • Investing: active interest in financial markets and portfolio management

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