Software consulting services
Revenant Systems is a UK software consultancy delivering full-stack and mobile development, AI consultancy, data engineering, cloud infrastructure, and technical due diligence — senior, in-house work for startups, growing companies, and established SMEs, built on the founder's twenty years of engineering systems that hold up in production at scale. Choose a service for its definition, stack, and what's included.
Which service do you need?
- Need something built — web, mobile, or both? Full-Stack Application Development →
- Need an LLM feature designed, shipped, or hardened? AI Consultancy →
- Need numbers you can trust, from tracking to dashboards? Data Engineering & Analytics →
- Need the platform fixed, codified, or cheaper? Cloud Infrastructure & DevOps →
- Need an independent view before you invest or build? Technical Due Diligence & Prototyping →
Full-Stack Application Development
Production web applications built end to end — data model, API, and interface. Go, Node.js and Python on the back end; Astro and HTMX for fast, lean front ends — and cross-platform mobile apps when you need to reach iOS and Android.
Go · Node.js · Python · Astro · HTMX · React Native · ExpoAI Consultancy
Practical AI integration — model selection, agent design, and LLM features built to hold up in production, not just in a demo. We also expose your existing applications to LLMs as tools agents can drive, automating workflows that used to take a person.
Anthropic · OpenAI · Google · OpenRouter · Python · Pydantic · LMStudio · llama.cppData Engineering & Analytics
The full data path — tracking and ingestion pipelines through to dashboards and reporting systems that turn raw events into decisions.
Python · PostgreSQL · ClickHouse · DuckDB · Data Warehousing · AirflowCloud Infrastructure & DevOps
The platform your product runs on — Terraform-managed infrastructure on AWS and Azure, Kubernetes and GitOps delivery where they earn their place, observability, and cloud cost control.
Terraform · Terragrunt · AWS · Azure · Kubernetes · Helm · ArgoCD · GrafanaTechnical Due Diligence & Prototyping
Independent assessment of existing systems and rapid proofs of concept for new ones — from validating enterprise architecture to de-risking a startup's first build.
Some engagements run as packages — audits and assessments with a fixed scope and a fixed price, agreed up front.