NexaMarTech

    AI App Development & MVP Development

    We build AI applications that run in production: retrieval systems over your own content, internal tools that remove manual work, and agents that act inside your business systems.

    Why AI products stall between demo and production

    A convincing AI demo takes a weekend. A production AI application takes evaluation harnesses, retrieval that returns the right documents, permission models, cost control, latency budgets, observability and a plan for what happens when the model is confidently wrong. Most projects underestimate the distance between those two states, ship the demo, and then spend months discovering the missing pieces in front of users.

    • No evaluation set, so regressions ship unnoticed with every prompt change
    • Retrieval that returns plausible but irrelevant context
    • Permissions bolted on late, exposing data the user should never see
    • Token cost and latency that only become visible at real usage
    • No observability, so failures are reported by users rather than alerts

    What AI app development includes

    We build AI applications and MVPs the way we would build any production system — typed, tested, observable and deployable — with the model treated as one component among several rather than as the whole product.

    • LLM applications and copilots
    • Retrieval-augmented generation over private data
    • AI agents with tool and API access
    • Internal AI tools and admin consoles
    • SaaS product engineering
    • Model evaluation and observability

    Key capabilities in detail

    AI application development

    End-to-end product development where the AI capability is embedded in a real application with authentication, state, billing and an interface people can use.

    • React and TypeScript front ends with accessible, responsive interfaces
    • Postgres-backed services with row-level security
    • Authentication, roles and multi-tenancy
    • Background jobs, queues and scheduled processing
    • Usage metering and billing integration

    AI MVP development

    A narrow, genuinely usable first version that tests the core hypothesis with real users, built on foundations that will not need throwing away if it works.

    • Scope negotiation down to the one thing that must be proven
    • Working software in weeks, deployed and instrumented
    • Real user feedback loops built into the release
    • An architecture that can carry the next twelve months of work

    AI agents

    Agents with defined tool access, bounded autonomy and full logging, so every action is attributable and reversible.

    • Tool and function calling against your own APIs
    • Planning and multi-step task execution with step limits
    • Model Context Protocol servers exposing internal capability to AI clients
    • Permission scoping and audit logging on every tool call
    • Human approval gates for irreversible actions

    LLM applications and RAG

    Retrieval-augmented systems where the hard work goes into chunking, indexing, re-ranking and citation rather than into prompt wording alone.

    • Document ingestion pipelines with permission-aware indexing
    • Embeddings, hybrid search and re-ranking
    • Mandatory citation of source material in answers
    • Prompt and context management under token budgets
    • Structured output with schema validation

    AI SaaS products and internal tools

    Whether the product is sold externally or used internally, the engineering standards are the same; only the surface area differs.

    • Multi-tenant SaaS with plan-based feature gating
    • Internal operations tools that automate specialist workflows
    • Admin dashboards, audit trails and role management
    • SSO integration for enterprise deployment

    API integrations and cloud deployment

    The application connects to the systems your business already runs on, and it deploys with the automation and monitoring a production service needs.

    • Integrations with CRM, billing, support, product and data platforms
    • Webhook handling with retries, idempotency and dead-letter queues
    • CI/CD pipelines with automated tests and preview environments
    • Observability: structured logs, tracing, cost and latency dashboards
    • Security review covering authentication, data handling and dependencies

    What we build

    Typical builds are a customer-facing assistant grounded in your documentation, an internal tool that drafts or classifies at volume, or an agent that reads and writes to your CRM and ticketing systems.

    • Retrieval pipelines with chunking, embedding and re-ranking
    • Tool-calling agents with permissioned, audited actions
    • MCP servers so your data is reachable by AI clients
    • Auth, billing, roles and admin surfaces
    • Evaluation harnesses and regression suites

    Engineering standards

    Applications ship with typed APIs, row-level security on customer data, structured logging of model calls, cost tracking per feature, and a rollback path. You own the repository and the infrastructure accounts.

    Use cases

    Typical situations where teams bring us in for this work.

    Internal knowledge assistant

    Retrieval over approved internal documentation with citations and permissions that mirror existing access controls.

    Customer-facing AI feature

    An AI capability inside an existing product, built to the same reliability and latency standards as the rest of the app.

    Document and data extraction

    Structured data pulled from contracts, invoices or forms with validation and human review on low-confidence results.

    Operations copilots

    Tools that draft, check and execute repetitive specialist work under human approval.

    MCP servers

    Exposing internal systems to AI clients over the Model Context Protocol with scoped, audited access.

    How NexaMarTech works

    The same delivery method every engagement follows — see our full process for more detail.

    1. 01

      Discovery

      Users, jobs to be done, constraints, data sources and the definition of success. We write down what the system must not do as well as what it must.

    2. 02

      Architecture

      Data model, service boundaries, model and retrieval strategy, security posture, cost and latency budgets — decided before code.

    3. 03

      Prototype

      The riskiest part built first on real data, evaluated against a labelled set so viability is proven before full build.

    4. 04

      AI integration

      Retrieval, prompting, tool access, structured outputs, guardrails and fallbacks wired into the application.

    5. 05

      Development

      Iterative delivery in short cycles with working software you can use at the end of each one.

    6. 06

      Testing

      Unit, integration and evaluation-set testing, load testing where it matters, and a security review before launch.

    7. 07

      Deployment

      CI/CD, environment promotion, monitoring, alerting and a documented rollback path.

    8. 08

      Optimisation

      Post-launch work on quality, latency and token cost, driven by production telemetry rather than assumption.

    Technologies & platforms

    We are vendor-neutral. These are the platforms we work with most often on this service.

    Frontend

    ReactTypeScriptViteTailwind CSSNext-generation SSR where SEO demands it

    Backend

    SupabasePostgresEdge FunctionsNode and Deno servicesRow-level security

    AI

    OpenAIAnthropic ClaudeGoogle GeminipgvectorLangChain-style orchestrationMCP

    Infrastructure

    Cloud deploymentCI/CD pipelinesObject storageQueues and cronStructured logging and tracing

    Benefits & business outcomes

    • A deployed application, not a demo
    • Documented evaluation results before launch
    • Full code and infrastructure ownership

    Frequently asked questions

    Do we own the code?

    Yes. Code is delivered into your repositories and infrastructure accounts, with documentation and a handover session.

    Can you extend an existing product?

    Yes. A large share of our work is adding AI capability to an application that already has users, which usually means working inside your existing codebase and release process.

    How do you control model costs?

    We track token spend per feature, cache aggressively, route simple tasks to smaller models, and set hard budget ceilings with alerting.