Arcode · MCP Developer · Berlin

MCP Developer in Berlin

As an MCP developer, Arcode helps teams turn a brief into a live product for teams in Berlin.

  • Custom MCP server development
  • Tool-calling integrations
  • Secure agent access patterns

Model Context Protocol specialists

Deep skills without product context tend to produce fragile integrations. The specialist work has to connect to real user flows.

We document the prompts, tools, schemas, and day-to-day runbooks so your team can run the system after we hand it over.

Most people who reach this page are teams adopting agentic AI tooling. Custom MCP servers that connect AI agents to your tools, data, and workflows.

What you get

  • Custom MCP server development
  • Tool-calling integrations
  • Secure agent access patterns
  • Cursor and Claude-ready tooling
  • One studio accountable for the result
  • Design and engineering on the same schedule
  • Support available after launch

How engagement works

As your MCP developer, we run a shared backlog, design reviews, and engineering sprints, and you keep one point of contact throughout.

  1. 01

    Discover

    Goals, constraints, data sources, and success metrics, all settled before we touch architecture or prompts. The work for teams in Berlin stays tied to the outcome you asked for.

  2. 02

    Design

    System design, AI/tool boundaries, interface direction, and interaction prototypes. You see progress on the critical path every week.

  3. 03

    Build

    Modern stack, clean architecture, evaluated AI behavior, and iterative demos you can react to. Nothing here waits on a handover between separate teams.

  4. 04

    Launch

    Ship, monitor, harden, and keep improving models, tools, and product after go-live. On MCP development projects we favour practical architecture over trendy defaults.

How we build it, and why

The stack is chosen per project, not applied from a template. For MCP developer work these are the defaults, and the reason each one is on the list.

MCP
the Model Context Protocol, so your tools plug into Claude, Cursor, and other agent clients without a custom adapter for each
TypeScript
types across the whole stack, which catches the class of bug that only shows up in production
Node.js
one language across the stack, so context does not get lost at the boundary
Claude
long-context reasoning and reliable tool calling for agent work
OpenAI
a second model provider, so a single vendor's outage or price change is not your problem

What the first weeks look like

  1. Week 1

    Spike the risky part

    We build the thinnest possible version of custom mcp server development against your real data. If it is going to be a problem, it is better to know in week one than week six.

  2. Weeks 2-3

    Harden the integration

    Auth, rate limits, error paths, and the data contract. This is the work that separates a demo from something you can leave running.

  3. Weeks 4-6

    Wire it into the product

    The MCP development stops being a standalone service and becomes a feature people use, with the interface and permissions that implies.

  4. Ongoing

    Evaluate and tune

    Behaviour gets measured against cases you care about, and we tune from that rather than from impressions.

Weighing up your options

There are three realistic ways to get this built. Each is the right answer for someone.

A solo freelancer

Cheapest per hour and fine for a contained task. The risk on MCP development is breadth — one person covering design, backend, infrastructure, and launch usually means one of them is weak, and there is no cover when they are unavailable.

A local agency in Berlin

Same timezone and a face to meet, which genuinely matters for some teams. You are also paying Berlin startups hiring for shipping speed and modern stacks. rates for the whole team including the layers that never touch your MCP development, and a local shortlist is a small shortlist.

Arcode

A small senior team. The people who scope the MCP development write the code, you get weekly demos instead of status decks, and the engagement ends when the thing is live and handed over.

Work we have shipped

Note Assist

AI product · Next.js · Speech

AI meeting assistant with live speech-to-text, ChatGPT chat, and Firebase auth for transcription workflows.

Freelance AI product built with Next.js, Firebase, AssemblyAI, and ChatGPT for live meeting transcription and realtime chat around the transcript.

  • · Live speech-to-text transcription
  • · Realtime chat over meeting notes
  • · Firebase authentication
  • · AI-assisted follow-up on transcripts

Next.js · Firebase · AssemblyAI · ChatGPT · TypeScript

Dare To Donate

Mobile · React Native

Cross-platform blood donation app connecting donors and recipients with Firebase auth and realtime data.

Expo React Native app for donation matching with secure auth and cloud storage.

  • · iOS and Android via Expo
  • · Firebase auth and realtime DB
  • · Donor/recipient flows
  • · Secure cloud storage

React Native · Expo · Redux Toolkit · Firebase

Brain CMS

Frontend · Firebase · Analytics

Multi-module enterprise CMS with documents, calendars, video, and advanced analytics.

Content and operations system spanning enterprise modules with Firebase and rich media tooling.

  • · Multi-module business domains
  • · PDF and document management
  • · Advanced charting suites
  • · Calendar and media workflows

React · Redux Saga · Firebase · Chart.js · Video.js

Working with teams in Berlin

Berlin startups hiring for shipping speed and modern stacks. We work with clients in Berlin remotely and keep overlapping hours in CET/CEST. We usually collaborate in German/English.

How we work with Berlin teams

Berlin is three to four hours behind us, so there is a full shared afternoon. Berlin teams tend to move fast and decide in writing, which suits the way we run a backlog.

What Berlin clients usually need

Berlin is the most startup-weighted market we work in outside the US: early-stage products that need to be live before the next raise, and AI features added to products that already have traction.

Contracts, data, and compliance

We invoice in EUR with reverse-charge VAT. GDPR is scoped into the build, with EU-hosted data by default and a DPA provided as standard rather than on request.

Related work

A few projects that line up with MCP development.

  • Note Assist

    AI

    Note Assist

    AI meeting assistant with live speech-to-text, ChatGPT chat, and Firebase auth for transcription workflows.

Next step

If this is your next hire or build, book a free consult with Arcode. Bring the brief and we will map out scope, risks, and a first milestone.