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Ykay Code
Ykay Code
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Backend engineering

APIs and background jobs that are secure, idempotent and observable.

NestJS and Node APIs with real authorisation, background processing and observability, plus Laravel and Python where a project calls for them.

Roles I am after
Senior Backend Engineer, Lead Backend Engineer
Main tools
NestJS, Node.js, PostgreSQL, Prisma, JWT and RBAC, SSE streaming

Address: hello@ykaycode.com

What I would bring

Backend
NestJS, Node.js
Data
PostgreSQL, Prisma, Redis
Languages
TypeScript

Work to look at first

Where I have worked

  1. Neli Arabi GmbH

    Lead Backend Engineer and pod lead

    Apr 2026 to Oct 2026, Berlin, Germany (remote)

    I led a backend pod building a B2B ERP platform for complex multi-entity operations.

    • Led the pod from April to October 2026.
    • Helped build the platform's structured workflows, data control, integrations and reporting.
    • Built private enterprise review into the platform.
  2. Lone Star Civil

    IT Manager and Lead Software Engineer

    Mar 2025 to now, San Antonio, Texas (remote)

    I lead the design, build and deployment of a contractor-management platform with AI features, and I own the company's software and cloud infrastructure.

    • Run the backend on AWS ECS Fargate with Aurora Serverless v2 PostgreSQL, S3 and CodeBuild pipelines, deploying without downtime.
    • Built a NestJS and TypeScript REST API with more than 50 endpoints, JWT authentication, role-based access and per-company data isolation.
    • Added features on the Claude API: streamed answers, tool use and document processing for PDF, DOCX, XLSX and images, leading to automated bids, cost estimates and price comparison.
    • Model the data in Prisma on PostgreSQL, including schema design, query tuning and migrations for construction-domain data.
  3. TheSlimPrep

    Part-time Software Engineer

    May 2024 to Mar 2026, Canada (remote)

    I built web applications and REST APIs for several platforms on a multi-tenant architecture, alongside my full-time work.

    • Built web apps and REST APIs in Node.js and React for multiple platforms on a multi-tenant architecture.
    • Designed SQL schemas and indexes, improving data retrieval performance by 40%.
    • Set up Docker development environments and deployment workflows, which sped up onboarding and made CI/CD reproducible.
    • Added JWT authentication and role-based access to multi-tenant SaaS features.
    • Worked in a cross-functional Agile team.
  4. Independent

    Full-stack developer and consultant

    Feb 2019 to Mar 2023, Remote

    Delivered web applications for clients in education, e-commerce and logistics, from architecture to deployment.

    • Wrote custom backends in PHP with Laravel and in Node.js: authentication, admin dashboards, reporting and API integrations.
    • Deployed on AWS with DNS, SSL, Nginx and automated backups.
    • Advised small businesses on technical architecture as they moved online.

Looking for something else? Software architecture, Full-stack web, Mobile apps.