Freelance Software Architect & Senior Software Engineer
I strengthen your development team in backend, full-stack, and AI integration — from architecture decisions through operations.
Java / Spring Boot · TypeScript / Node.js · React · AI
Technical responsibility.
Hands-on involvement.
Since 2008Software development
Architecture & OperationsOwn SaaS · 2019–2024
Full-Stack & AICurrent client projects
See the work behind it9 selected projects
Three insights in detail. See six more projects.
As technical co-founder, I helped build a SaaS platform that let Amazon sellers analyze their markets and products. I designed the architecture, contributed hands-on to development, and provided technical guidance to the team. Over several years, we ran the platform on our own servers — with ongoing development, monitoring, and bug fixing.
Responsibility from architecture through ongoing operations.
In this client project, the agency team selects influencers and manages outreach. Previously, data was researched and transferred manually, emails were sent by hand, and details from each reply were recorded one by one.
I developed a Chrome extension that automatically transfers data for the influencers selected by the agency team from the influencer database into the target system. A separately developed outreach system sends emails automatically, checks replies for completeness, captures the data, and suggests responses. This turns the person into a conductor: select, review, direct.
Goal: significantly less manual work in creator acquisition.
Usability & Prototyping
Nexus for webconia
Nexus is a complex application for pitch overview and project search at webconia. I analyzed its usability and built an interactive React prototype.
Many statuses and filters at once.
Key steps in view, additional filters available when needed.
Dense navigation and six equally weighted search fields.
Consolidated navigation, clear search, and supplementary filters.
Before shows a synthetic recreation of the earlier setup, and after shows my UX prototype — both using sample data.
Integration, data processing, and ongoing development.
B2B company · Full-stack
2025–2026
Leads had to be entered manually, checked against suppression lists and the CRM, and loaded into campaigns. I combined these steps in a full-stack tool. Interested contacts are then sent automatically to HubSpot via webhook.
Rental company · Data processing
Since approx. 03/2026
Customers, quotes, and invoices were scattered across emails and PDFs. I automated the extraction of this data, removed duplicates, and matched transactions to customers. The result is a searchable customer database; unclear matches remain flagged for review.
Data processing implemented; overall business review still pending.
Football club · Existing software
2026
A football club needed someone to take over and extend its existing membership software. I familiarized myself with the codebase, fixed bugs, added features, and stabilized operations. The club can continue working with its existing application.
Own project · Data processing
2026
For narrowly defined target groups, standard databases returned only patchy results. I merged directory and web data, cleaned it, and optionally verified it with AI. The result can be exported; each company retains its source reference.
Performance marketing agency · Data & automation
2025
An agency wanted to target matching online shops without paying again to enrich contacts it already knew — enrich meaning adding further contact and company data. I used Clay to build an automated technical check of publicly available company data, legal-form information, and online activity, and matched it against the CRM before enrichment. Matching new companies are forwarded automatically to HubSpot and Smartlead.
Recruiting agency · B2B company research
2025
The target was physiotherapy practices with an estimated more than six full-time therapists. I used AI to analyze website text and images, estimating team sizes from the information on each website and distinguishing therapists from administrative staff. The subsequent contact enrichment turns this into a specifically researched company selection.
Role in the Development Team
APIs, data models, and distributed processing.
Java / Spring Boot · APIs · Data ModelsDeveloping UI, backend, and data storage end to end.
React / Node.js · Agency ApplicationIntegrating AI features, making software ideas tangible early on.
Outreach System · Agency ApplicationWay of Working
AI supports my development work. I take personal responsibility for architecture decisions, code reviews, and tests.
Clarify the application and requirements.
Decide and implement it myself.
Verify changes through reviews and tests.
Plan ahead for operations and knowledge transfer.
About Me
As technical co-founder, I helped build a SaaS platform and provided technical guidance to the team. Today, I develop client applications, integrations, and AI features.
Meckenheim, near Bonn · German · English C1
Download Freelance CV PDF · 6 pages
Frequently Asked Questions
Yes. Companies and recruitment agencies can send me a job posting directly. For an initial assessment, it helps to know the role, tasks, and core technologies involved. For further details on my profile and relevant projects, I'm happy to speak with you directly.
I make architecture decisions together with the team and develop alongside them. I work within the existing codebase and align tasks, Git workflows, reviews, and tests with the team's processes.
Yes. I take over existing software, fix bugs, add features, and connect systems. After reviewing the code, data flows, and requirements, we determine whether an extension, integration, or new development makes the most sense.
Traceable changes, code reviews, and appropriate automated tests are part of the implementation. We agree within the project on what documentation, access, and knowledge transfer your team needs. Usage rights and source code handover are defined in the contract.
No. I also build traditional applications and integrations. AI is used where it makes sense for the task at hand. In development, I take personal responsibility for decisions, reviews, and tests; tools and data access are agreed on a per-project basis.
A job posting or a short description of the problem, the systems involved, and the desired outcome is enough to get started. A finished requirements document isn't necessary. From there, we clarify fit, open questions, and the next sensible step.
Project Contact
Send me your job posting or project description. We'll discuss fit and how we might work together.
0176 19253865florian@nimblean.deYou're also welcome to inquire directly about custom applications and prototypes.
Send me your job posting or project description directly by email, or give me a call.
Project inquiry by emailCall directly: 0176 19253865