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Josh King

@joshking

Senior full stack engineer delivering scalable SaaS, distributed systems, and cloud-native performance with reliable, multi-tenant APIs.

Denmark

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What I'm looking for

I’m looking to build scalable, multi-tenant SaaS with strong backend/API reliability, performance optimization, and production-grade monitoring. I want teams that value automation (CI/CD), clean testing practices, and cloud-native reliability.

I’m a Senior Full Stack Engineer with 8+ years of experience building scalable SaaS platforms, distributed systems, and cloud-native applications. I focus on designing reliable backend systems, high-performance APIs, and multi-tenant architectures that support thousands to millions of users.

Recently at Aneket Innovators, I helped shape a multi-tenant SaaS architecture, reducing slow API responses by 25% through database and caching optimization. I also built automated deployment pipelines for daily releases with fewer production errors, managed Azure infrastructure while reducing hosting costs by 20%, and implemented monitoring and alerting to improve production issue detection and resolution.

Before that, I led distributed messaging systems at Stemless (1M+ SMS transactions/day with 99.9% uptime), ran a major refactor covering 60% of the codebase (test coverage 28% to 85%, production bugs down 90%), and improved monitoring to reduce failure detection time by 95%. I’ve also delivered production-critical platforms like Norma Technologies’ tax management system (1M+ citizens, 99.95% uptime) and mentored developers through code reviews and pair programming.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Anket Innovators

Feb 2025 - Present (1 year 3 months)

Designed architecture for a multi-tenant SaaS platform and improved API performance by 25% through database and caching optimization. Built automated deployment pipelines and implemented monitoring/alerting to improve production issue detection and resolution.

API Performance Database Optimization Caching CI CD Pipelines Monitoring And Alerting Scalability

Independent Full Stack Engineer

Independent

Aug 2024 - Feb 2025 (6 months)

Built an AI-powered media monitoring platform and onboarded three enterprise clients within 60 days. Developed an AI-assisted research platform (LLM integrations) and delivered a marketplace for 5,000+ users with payments, messaging, and automated background processing.

LLM Integrations Messaging Systems API Development Automated Testing Continuous Deployment

Senior Backend Engineer

Stemless

Jan 2022 - Aug 2024 (2 years 7 months)

Built distributed messaging infrastructure processing 1M+ SMS transactions per day with 99.9% uptime. Led a major 60% codebase refactor, raising test coverage from 28% to 85% and reducing production bugs by 90%, while cutting failure detection time by 95%.

API Development Scalability Refactoring Monitoring And Alerting

Full Stack Developer

Norma Technologies

Sep 2019 - Jan 2022 (2 years 4 months)

Designed and built a tax management platform supporting 1M+ citizens with 99.95% uptime. Implemented secure authentication and role-based access for government users and improved delivery by increasing new-module test coverage to 80% and reducing QA cycles by 3 days.

Fullstack Development Full Stack Development Authentication RBAC API Development Automated Testing

Full Stack Developer

Interkel Group

Jul 2018 - Aug 2019 (1 year 1 month)

Led development of a learning management platform from concept to production deployment. Helped launch a new SaaS product offering that contributed to a 40% increase in company revenue.

SaaS Product Development Learning Management Systems API Development Database Design System Integration Full Stack Engineering