Triple Down

Built With AI. Engineered to Last.

We build AI powered software and rescue AI generated codebases.

We've been writing production software for over two decades. These days most of that work involves AI, and we've gotten very good at it.

If you need an AI product built from scratch, or you've got an AI generated codebase that's starting to buckle under its own weight, we can help.

01

AI Product Development

Build AI powered products from scratch

We build the kind of AI software that actually makes it to production and stays there. LLM powered apps, agent systems, automation tools, internal platforms. We know what it takes to go from a working prototype to something you can put real users on without losing sleep.

What we build

  • LLM powered apps (assistants, document processors, content engines)
  • AI agents and multi step workflow systems
  • Automation that replaces manual processes at scale
  • Existing platforms reimagined with AI at the core
  • Internal tools that make your team wildly more productive

Our AI stack: Claude, GPT, Gemini, and open weight models where they earn their place. Agent loops and MCP servers, retrieval and hybrid search, structured outputs, prompt caching, fine tuning and distillation, plus the evals and tracing that keep it honest. On the engineering side: .NET, React, Next.js, Astro, Python, TypeScript. We use whatever fits the problem best.

02

AI Codebase Rescue

Your AI generated codebase needs senior engineers

You used AI to build fast and it got you pretty far. But now the codebase is getting harder to work with, bugs are showing up in weird places, and your team spends more time fighting the code than shipping features. We see this constantly. We come in, figure out what's actually solid and what needs to go, then fix it incrementally without blowing everything up.

Problems we see in almost every AI generated codebase

  • Inconsistent architecture (every file was generated in a different chat session)
  • Security holes and edge cases the AI never thought about
  • Tests that exist but don't actually test anything useful
  • Random dependencies, version conflicts, abandoned packages
  • The same logic copy pasted and slightly different in ten places

How we approach it: We start with a full audit so everyone knows where things stand. Then we triage by risk, stabilize the worst parts first, add real test coverage and monitoring, and work from there. No big rewrites. Just steady improvement on a codebase that keeps running the whole time.

03

AI Integration

Make your existing systems smarter

Not everything needs to be built from scratch. Sometimes the smartest thing to do is plug AI into systems you already have running. We've done a lot of integration work over the years, so we know how to get AI working inside real production infrastructure without breaking what's already there.

What we plug in

  • AI powered search (semantic understanding across your data)
  • Document processing (extraction, classification, summarization)
  • Internal AI assistants trained on your own docs and processes
  • Workflow automation with AI decision making baked in
  • Data pipelines that use AI to enrich, classify, and route

Products we build and run ourselves.

Open source

Libraries under our own products, and the tools we built to work on them.

tripledownab/tessio-verifier

Tessio.Verifier

An EU Digital Identity Wallet verifier for .NET.

The relying party side of the wallet, as five NuGet packages: OpenID4VP 1.0 with DCQL, SD-JWT VC and ISO 18013-5 mdoc, over COSE, CBOR and X.509 chain validation. The verification engine behind Tessio, Apache-2.0, and installable on its own.

  • C#
  • EUDI Wallet
  • OpenID4VP

tripledownab/condux-otlp

Condux.Otlp

Read OpenTelemetry logs in .NET, with nothing behind it.

Java, Rust and Go ship official OTLP message types for the receiving end of an export. .NET does not, and the alternatives drag a protobuf runtime in with them. So this decodes both the binary and the JSON encoding by hand, with nesting limits that hold up against hostile input and zero package dependencies.

  • C#
  • OpenTelemetry
  • Zero dependencies

tripledownab/cathode

Cathode

A terminal UI for Claude Code.

A Bubble Tea TUI that drives the official Claude CLI over its stream json protocol, so the agent loop stays where Anthropic built it. Inline tool approvals, visual diffs, session resume and a pile of themes, all running on a Pro/Max subscription rather than an API key.

  • Go
  • Terminal UI
  • Claude Code

tripledownab/deck

Deck

A terminal workspace for parallel agent sessions.

Projects and sessions in one frame, each agent running in its own pseudo-terminal. Where Cathode goes deep on a single session, Deck goes wide: start several, keep an eye on all of them, and move between them without losing your place in any.

  • Go
  • Terminal UI
  • Coding agents

tripledownab/triggerhappy

Trigger Happy

macOS hotkeys, with a BBS terminal overlay.

A menu bar utility for global hotkeys, app launching and clipboard history. The overlays ship with a 90s ANSI/PCBoard skin: CP437 borders, fifteen colour schemes and a Quake style drop down console. Native panels too, if you prefer them.

  • Swift
  • macOS
  • Menu bar

Who We Are

We're an AI native development shop based in Stockholm. We've been around for a while, and for the past few years AI has been at the center of pretty much everything we do.

We didn't just add “AI” to our website last year. We use it every day to build and ship real software. We understand its output, we know where it's strong, and we know exactly where it falls apart and needs an experienced engineer to step in.

Our Edge

Most of the AI development shops out there were founded in the last couple of years. They're fast, but they haven't had to maintain anything in production for very long. Meanwhile, most traditional agencies have tons of engineering experience but still treat AI as a bolt on feature.

We've got both. We're senior engineers who went all in on AI, so we bring the production discipline (monitoring, testing, security, deployment) and the AI fluency together. The stuff we build doesn't just work in a demo. It works at 3am when nobody's watching.

AI & Models

  • Claude (Anthropic) / GPT (OpenAI)
  • Gemini (Google)
  • Open weights: Llama, Mistral, Qwen, DeepSeek
  • Agents, tool use / MCP servers
  • RAG, hybrid search / Vector databases
  • Evals, guardrails / LLM observability

Engineering

  • TypeScript / Python / C# (.NET)
  • React / Next.js / Astro
  • Node.js / .NET / FastAPI
  • PostgreSQL / Redis / Supabase
  • REST / GraphQL / WebSockets

Infrastructure

  • AWS / Google Cloud / Azure / Vercel
  • Docker / CI/CD pipelines
  • Serverless / Edge compute
  • Monitoring / Observability

What does Triple Down do?

We build AI powered products from scratch, take over AI generated codebases that need proper engineering, and plug AI into existing systems.

What is AI Codebase Rescue?

A lot of companies used AI to generate entire codebases over the last couple of years. Many of those codebases look fine on the surface but have real problems underneath: messy architecture, security gaps, no tests, dependency chaos. We come in, audit the whole thing, fix what needs fixing, and stay on to maintain it. No full rewrites necessary.

What AI technologies do you work with?

Anthropic's Claude, OpenAI's GPT, Google's Gemini, and open weight models from Meta, Mistral, Qwen and DeepSeek. We pick per task rather than standardising on one vendor, and we move as the frontier moves. Around the models: agentic tool use and MCP servers, retrieval and hybrid search, structured outputs, prompt caching, fine tuning and distillation, and the eval and tracing setup that tells you whether a prompt change or a model swap actually made things better.

Why should I hire you instead of a bigger agency?

Bigger agencies have a lot of people but most of them just slapped “AI” on their pitch deck last year. We actually build with AI every single day, and we’ve got the production background to back it up. You get senior people doing the actual work, not juniors following a playbook.

How experienced is your team?

We've been around since the early 2000s. We've built fintech compliance platforms, e learning systems, streaming services, HR competency platforms, air taxi apps, and now the AI products we're focused on today.

How do you handle data security?

Very carefully, especially with AI systems that touch sensitive data. We follow GDPR, set up proper access controls, and pay close attention to AI-specific risks like prompt injection and output validation. If your data matters (and it does), we treat it that way.

If you've got something you want to build or a codebase that needs help, let's talk.

hello@3dwn.se

Email
hello@3dwn.se
Address
Skeppargatan 55, 114 59 Stockholm, Sweden
Company
Triple Down AB