Portrait of Phillipp Bertram
Software & AIOpen to new projects

Phillipp Bertram. I build software and integrate AI where it helps.

Mobile apps, web applications, backends and AI agents. I build independently or work as part of your team.

or get in touchBook a call

Software development
14+ years
KickOn · AeroSys
2× CTO & Co-Founder
DLR · Hawkeye
Lead Software Architect
Industry · Fintech
Aviation to smart homes
01 — Principles

I have been building software since 2012.

From mobile apps to backends and cloud systems, I have built applications and taken responsibility for their technical direction. AI is now another tool in that work. My experience helps me assess its suggestions, spot mistakes and develop solutions myself.

  1. 01

    Understand the connections

    I understand how architecture, code and operations fit together and can assess how a change will affect the system.

  2. 02

    Assess the suggestions

    I check whether generated code meets the requirements, fits the existing system and will remain understandable.

  3. 03

    Develop solutions myself

    I can adapt solutions, fix bugs and develop my own approaches. That requires understanding the code.

  4. 04

    Take responsibility

    Technical decisions, testing and the quality of the implementation remain my responsibility.

02 — Services

How I can help

I build new applications, improve existing software and support development teams.

01

AI agents & automated workflows

I build AI agents and automated workflows that work with your data and existing systems. For research, document analysis or recurring tasks in your team, for example.

Together, we identify suitable tasks. I integrate the agent into your systems and make sure you can review results and approve important steps.

  • OpenAI
  • Claude (Anthropic)
  • OpenAI Agents SDK
  • Mastra
  • LangChain / LangGraph
  • MCP
  • RAG
Ask about this
Pricewerk – AI-assisted technical market analysis

02Web applications & products

03Mobile apps

04Technical responsibility in your team

03 — Selected projects

A look at my work

Screenshot of a financial analysis tool with a price chart, harmonic pattern and strategy panel.

Fullstack Software Engineer2023 – 2025

Financial analysis platform

I independently developed a financial analysis platform for a client, from the architecture to the web interface. Hundreds of assets used to be checked manually for harmonic price patterns every day. The platform now performs this analysis automatically and in real time. It started as an internal tool. I then prepared it for external users, including payment functionality.

  • AWS Lambda
  • DynamoDB
  • Go
  • TypeScript
  • React
  • Next.js
  • PostgreSQL
  • Auth0
  • Stripe
Feedback from Thomas B.Ask about this
04 — How I work

Understand first. Then get started.

How we work together depends on the project and your team. These steps are part of my approach:

  1. 01

    Understand what is needed

    We discuss who will use the application, what it needs to do and which systems are already in place.

  2. 02

    Plan manageable steps

    We agree on priorities and break the work into steps so you can try out intermediate results.

  3. 03

    Build and review together

    I show you progress regularly. We discuss your feedback and adjust the plan when needed.

  4. 04

    Continue or hand over

    I support further development or document and hand over my work so your team can continue independently.

Two ways to work together

Independent product development

I support your project from the first idea to the finished application. You regularly see a working version and help shape the decisions.

Within your existing team

I get to know your software and workflows. Depending on what you need, I contribute code, take on specific tasks or assume technical responsibility.

05 — About me

I started out building mobile apps.

14+Years of experience

Today, as Lead Software Architect in the DLR team, I am responsible for the architecture and development of Hawkeye. Alongside that, I support clients and build my own products. I am particularly proud of my long-term work on Hawkeye.

I co-founded two companies, KickOn and AeroSys. As CTO, I was responsible for architecture, development and building the team. I know the decisions that come with limited time and budgets.

PricewerkFounder & Product Engineer2026 – present

DLRLead Software Architect2025 – present

Self-employedFreelance Software Developer2023 – present

AeroSys AGCTO & Co-Founder2021 – 2023

slashwhySoftware Engineer2019 – 2021

KickOnCTO & Co-Founder2018 – 2021

LMIS AGHead of Mobile App Development2015 – 2019

LMIS AGDeveloper & Software Consultant2013 – 2015

Technologies

What I prefer to work with.

AI & agents

  • AI agents
  • RAG
  • MCP
  • Mastra
  • LangChain / LangGraph
  • Vercel AI SDK
  • OpenAI SDK
  • Claude SDK

Also: Amazon Bedrock · Amazon SageMaker · Deep Agents · Python

Backend & Cloud

  • Node.js
  • NestJS
  • PostgreSQL
  • Redis
  • GraphQL
  • AWS (Lambda, ECS, Fargate, DynamoDB)
  • AWS CDK
  • Docker
  • Auth0
  • OAuth 2.0 / OIDC
  • Stripe
  • PayPal

Also: Better Auth · AWS Cognito · AWS IoT · Terraform · CI/CD (GitHub Actions, GitLab CI) · Express · Go · gRPC · Polar

Web & Desktop

  • TypeScript
  • React
  • Next.js
  • Tailwind CSS
  • Electron

Mobile (iOS & Android)

  • Swift / SwiftUI
  • Flutter
  • Bluetooth (BLE, Mesh)
  • Firebase

Also: Kotlin · UIKit · RFID

CertificationsAWS Certified AI Practitioner2025AWS Certified Solutions Architect - Associate2024AWS Certified Cloud Practitioner2022
Education
M.Sc. Computer ScienceOsnabrück University2012
B.Sc. Physics with Computer ScienceOsnabrück University2009
06 — Testimonials

What others say about working with me

Translated from German.

I recommend Phillipp without reservation for any role that calls for technical understanding, a sense of responsibility and a real passion for good solutions. Working with him means getting results and having someone you can rely on at all times.
Sascha Dömer · CDO, LMIS AG
07 — FAQ

Frequently asked questions

Questions that often come up before working together.

Do you work remotely or on site?

Mostly remotely, from Osnabrück in Germany. I am happy to join you in person for workshops, project kick-offs or important discussions by arrangement.

How does an engagement work?

I charge for time worked at an agreed daily or hourly rate. This lets us adjust the scope as we learn more during the project.

Can you work part-time?

Yes. Depending on the project, I can also work part-time, for example on fixed days each week. We can discuss this in our first conversation.

Do you also work through recruiters or agencies?

Yes, I work directly with companies and through recruiters and agencies. You can download my current project profile as a PDF.

Project profile (PDF)
Are there projects you do not take on?

Yes. My focus is application and AI agent development and technical project management, including roles without hands-on coding if needed. Testing and test automation, DevOps, design and UX are part of my development work. I do not take on projects where one of those is the main responsibility. I also do not build WordPress websites.

When can you start?

That depends on my current projects. Send me a short description of what you have in mind and when you would like to start. I can then tell you whether and when I have availability.

What does working with you cost?

That depends on the role, scope and duration. After our first conversation, you will receive a proposal with a daily rate and a realistic estimate of the work involved.

Open to new projects

What are you working on?

Tell me briefly what you have in mind and where you need support.

Then we can see whether we are a good fit, professionally and personally.

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