Engineering Blog
Insights, tutorials, and updates from our team
Why Outsource Software Development to a Product Studio in Ukraine
Why a product studio beats a traditional outsourcing agency, and what to look for in a Ukrainian development partner. A practical guide from a Kyiv studio.
How We Built an AI-Powered Job Application Tracker
The technical story behind Jobber by fluxLab.dev — building a job search management platform with AI resume matching, automated job parsing, and analytics.
Adding AI Features to SaaS Products Without Breaking the Bank
How fluxLab.dev integrates Claude AI into Jobber for job parsing, resume matching, and cover letter generation while keeping costs under control.
Building a SaaS Product From Zero to Launch in 8 Weeks
The step-by-step playbook fluxLab.dev uses to take SaaS products from idea to production, covering architecture, MVP scoping, deployment, and launch.
Why We Chose Go for Our SaaS Backend at fluxLab.dev
How fluxLab.dev migrated from Node.js to Go for production SaaS backends and achieved 3x throughput improvement with lower memory usage.
React Performance Patterns We Use in Production
Practical React performance techniques from fluxLab.dev products: code splitting, memoization, virtualization and image optimization.
PostgreSQL Performance Lessons From Running 6 SaaS Products
PostgreSQL optimization lessons from running production SaaS databases at fluxLab.dev: indexing, query tuning, N+1 queries and connection pooling.
Deploying SaaS Products With Docker on Hetzner Cloud
A practical guide to deploying containerized SaaS applications on Hetzner Cloud with Docker Compose, automated CI/CD, and zero-downtime deployments.
Building Multi-Language Next.js Apps With next-intl
How fluxLab.dev implements internationalization in Next.js applications using next-intl, supporting English and Ukrainian with SEO-friendly URL routing.
TypeScript Practices We Use in Production
How we write TypeScript at fluxLab.dev, shown in this site's own code: strict mode, literal unions, readonly types, Zod validation and fail-fast config.
How We Build Production Web Apps With Next.js
The Next.js 16 code behind flux-lab.dev: Server Components, locale-prefixed routing, per-page hreflang, Zod-validated forms, Tailwind 4 and Docker.