Ship Faster with AI-Native Engineering
Sellastack pairs senior engineers with AI agents across the entire software development lifecycle. We design, build, and ship production-grade products like PrestoBills in weeks, not quarters.
Trusted by innovative companies
Our Services
Comprehensive technology solutions designed to accelerate your digital journey and deliver competitive advantage.
Agentic Development
AI agents that plan, code, review, and ship features alongside your team. We build autonomous engineering workflows that compress weeks of work into days.
AI in the SDLC
We embed AI across the entire software development lifecycle — requirements, design, implementation, testing, code review, deployment, and observability — so velocity compounds.
AI & Machine Learning
Production LLM applications, RAG systems, custom model fine-tuning, and intelligent automations that turn your data into measurable business outcomes.
Custom Software Development
Bespoke applications built with modern stacks (Next.js, TypeScript, Postgres) and AI-assisted engineering, delivered faster and with higher quality than traditional teams.
Cloud Architecture
Scalable, secure, and cost-effective cloud solutions on AWS, Azure, and GCP — designed for AI-native workloads, vector databases, and agent runtimes.
AI Workflow Automation
Multi-step agentic workflows that orchestrate tools, APIs, and humans-in-the-loop to automate operations, support, sales, and back-office tasks.
System Integration
Seamless integration of disparate systems, APIs, and AI providers to create a unified, model-agnostic technology ecosystem.
AI Security & Governance
Enterprise-grade guardrails, evaluations, prompt-injection defenses, and compliance frameworks for deploying AI safely at scale.
AI-Native Approach
A modern methodology that fuses senior engineering judgment with AI agents at every stage of the software development lifecycle.
Discovery & Strategy
We immerse ourselves in your business and use AI research agents to accelerate competitive analysis, requirements gathering, and roadmap definition.
AI-Augmented Design
Architecture decisions are pressure-tested with AI copilots that surface trade-offs, generate diagrams, and validate scalability against real-world patterns.
Agentic Development
AI coding agents work in lockstep with senior engineers — drafting features, generating tests, refactoring, and reviewing PRs across the entire SDLC.
Continuous Evolution
AI-powered observability, auto-remediation, and ongoing agent-driven improvements keep your product compounding in value long after launch.
Case Studies
Real products shipped to production with AI woven through every stage of the software development lifecycle.
Agentic invoicing platform built end-to-end with an AI-augmented SDLC
We designed, built, and shipped PrestoBills.com — a modern billing and invoicing platform — using an agentic development workflow. AI agents drafted features, generated tests, refactored code, and shaped the architecture alongside our engineers, compressing months of work into weeks.
Industries We Serve
Deep expertise across diverse sectors, delivering tailored solutions that drive innovation and growth.
Edutech
Building innovative learning platforms and educational tools that empower students and educators with cutting-edge technology.
Healthcare
Developing secure, compliant healthcare solutions that improve patient care and streamline clinical workflows.
Real-time Data Processing
Creating high-performance systems that process and analyze data streams in real-time for instant insights and decisions.
Identity
Implementing robust identity and access management solutions that ensure security while delivering seamless user experiences.
Let's Build Something Exceptional
Ready to transform your technology landscape? Our team of experts is here to guide you through every step of your digital journey.