UID0 AB - Software Engineering Services

:: ABOUT ::

UID0 AB - Building enterprise-grade software systems since establishment.

We specialize in architecting and implementing scalable software solutions for businesses with validated market demand. Our focus: systems that generate revenue.

PHILOSOPHY:

Simple, robust architectures
Production-ready code from day one
No over-engineering, no unnecessary complexity
Direct communication, transparent process

:: SERVICES ::

SERVICE	DESCRIPTION	STATUS
SOFTWARE ARCHITECTURE	Design scalable systems handling millions of transactions	[AVAILABLE]
FULL-STACK DEVELOPMENT	.NET Core, React, Node.js - complete solution delivery	[AVAILABLE]
SYSTEM INTEGRATION	Connect disparate systems, APIs, and legacy infrastructure	[AVAILABLE]
DATABASE DESIGN	SQL Server, PostgreSQL, NoSQL - optimized data architecture	[AVAILABLE]
CLOUD MIGRATION	Move legacy systems to modern cloud infrastructure	[AVAILABLE]
AI-AUGMENTED ENGINEERING	Agentic, context & prompt engineering with Claude Code and Codex	[NEW]
TECHNICAL ADVISORY	CTO-level guidance for technology decisions	[AVAILABLE]

:: TECHNICAL STACK ::

Backend Technologies:

.NET 10.0        | C# 14         | ASP.NET Core
Node.js 20.x     | TypeScript    | Express.js
Python 3.11      | FastAPI       | Django
SQL Server       | PostgreSQL    | MongoDB
Redis            | RabbitMQ      | Apache Kafka
Docker           | Kubernetes    | Azure/AWS
        

Frontend Technologies:

React 18         | Next.js 14    | TypeScript
Vue.js 3         | Nuxt.js       | JavaScript ES6+
HTML5            | CSS3          | Tailwind CSS
Redux            | MobX          | Context API
Webpack          | Vite          | REST/GraphQL
        

Specialized Domains:

$ Financial Systems (Banking, Trading, Payments)
$ Government Systems (Citizen Registries, Public Services)
$ Enterprise Integration (ERP, CRM, Supply Chain)
$ High-Performance Computing (Real-time Processing)
$ AI-Augmented Development (LLM Tooling, Agentic Workflows)

:: AI & LLM ENGINEERING ::

We build software with AI, not just around it. Modern LLM tooling is a force multiplier - when driven by engineers who understand both the models and the systems they operate on.

Disciplines:

DISCIPLINE	WHAT IT MEANS IN PRACTICE
AGENTIC ENGINEERING	Designing autonomous coding agents and multi-agent workflows: task decomposition, tool use, sandboxed execution, verification loops, and CI-integrated agents that plan, implement, and test with minimal supervision
CONTEXT ENGINEERING	Structuring what the model sees: curated repository context (CLAUDE.md / AGENTS.md), retrieval and memory strategies, MCP tool integration, and context-window budgeting so agents stay accurate on large codebases
PROMPT ENGINEERING	Precise, testable instructions: system prompts, structured outputs, few-shot patterns, evaluation harnesses, and reusable prompt libraries that make LLM behavior predictable and reviewable

Daily Toolchain:

Claude Code      | OpenAI Codex  | Agentic CLI-driven development
Claude API       | OpenAI API    | LLM-powered product features
MCP Servers      | Custom Tools  | Extending agent capabilities
Subagents        | Workflows     | Parallel, orchestrated task execution
Prompt Evals     | Guardrails    | Measurable, production-safe AI output
        

HOW WE APPLY IT:

Ship production features faster by pairing senior engineers with agentic tools like Claude Code and Codex
Automate code review, test generation, refactoring, and documentation as part of the delivery pipeline
Integrate LLM capabilities (extraction, classification, summarization, conversational interfaces) into client products
Set up AI-assisted engineering practices for client teams: tooling, prompts, context conventions, and guardrails

Bottom line: AI tooling doesn't replace engineering judgment - it amplifies it. Every AI-assisted change is reviewed, tested, and held to the same production standard as hand-written code.

:: DELIVERED SOLUTIONS ::

1. RETAIL BANKING PLATFORM

Type: Core banking system

Scope: Customer accounts, transactions, regulatory reporting

Tech: .NET Core, SQL Server, Microservices

Status: PRODUCTION

2. HIGH-FREQUENCY TRADING SYSTEM

Type: Financial trading platform

Scope: Real-time market data, algorithmic trading, sub-millisecond execution

Tech: C#, Event Streaming, WebSockets

Status: PRODUCTION

3. INVOICE FACTORING PLATFORM

Type: Financial system integration

Scope: Invoice processing, credit decisions, automated funding

Tech: .NET Core, REST APIs, Message Queues, SQL Server

Status: PRODUCTION

4. ERP ACCOUNTS PAYABLE BRIDGE

Type: Enterprise integration

Scope: EFH to multiple ERP systems, automated AP processing

Tech: Integration Services, XML/JSON, Oracle ERP, Middleware

Status: PRODUCTION

5. GOVERNMENT REGISTER SYSTEM

Type: National-scale data management

Scope: Citizen records, millions of queries monthly

Tech: .NET, PostgreSQL, Elasticsearch, Docker

Status: PRODUCTION

:: PARTNERSHIP CRITERIA ::

We work with businesses that have:

REQUIREMENT	DESCRIPTION
Market Validation	Existing or committed paying customers
Revenue Model	Clear pricing strategy and sustainable business model
Technical Partnership	Equity or revenue-sharing for long-term alignment
Growth Potential	Scalable solutions with expansion opportunities

:: CONTACT ::

Email:    ajanth@userid0.se
Company:  UID0 AB
Location: Stockholm, Sweden
Status:   ACCEPTING NEW PROJECTS
        

Note: We respond to serious inquiries within 24 hours. Please include project scope, budget range, and timeline in your initial contact.

UID0 AB - SOFTWARE ENGINEERING & DIGITAL PRODUCT DEVELOPMENT