Location · Düsseldorf

Freelance developer for clients in Düsseldorf.

From the Ruhr Area I support agencies and SaaS companies in Düsseldorf. Under forty minutes by train, remote whenever it makes sense.

Book a 15min Callmehr erfahren
Nils Schlüter
01 / ProfileBochum · DE
Successful projects with
ContinuumObjegoeco.incomeAbo Store
— Note

Düsseldorf: agencies, SaaS teams, and the finance scene

In Düsseldorf I often work with agencies building content platforms for clients in finance and advertising, and with SaaS teams scaling their products. The focus is usually on speed of delivery and on clean handover when the agency project moves to an internal team.

Train from the Ruhr Area takes about forty minutes. That makes weekly on-site meetings realistic without hotel costs or time lost on travel.

— Services

Get the most out of your website

03 Angebote

01

Manage content quickly and effortlessly – without developers

Every change to your website costs time and ties up your developers? Your CMS is holding back development and hurting your visibility? It's time for a CMS built specifically for you.

02

Build features your customers actually want

The backlog is full but the dev team is at capacity? I implement the features your customers need that would otherwise sit waiting for weeks – in parallel, without affecting your day-to-day operations.

03

Optimise performance, conversion, and accessibility

Want to get the most out of your website and know whether you're meeting all legal requirements? SEO, performance & accessibility audits – concrete measures to attract more visitors and convert more of them into customers.

— About

Who am I?

I'm Nils – Senior Fullstack Developer focused on SaaS products, content platforms, and high-performance websites. I've guided SaaS products from the first line of code to paying customers, and supported enterprise teams in scaling their content platforms. My standard: code that's not just clean – but that drives the business forward.

  • 10+ years of fullstack web development
  • Project experience from US startups to German enterprises
  • Deep technical expertise with a focus on product and business goals
Nils Schlüter
01 / ProfileBochum · DE

I'm flexible with technology, but especially enjoy working with:

tools
TypescriptNext.jsPostgreSQLNode.jsPrismaReactTanStack QueryTailwindCSSShadcn UIDockerKubernetesVercelGitSentry
— Selected work

Successful Projects

04 case studies

  • 01 / Case
    Continuum

    Continuum

    Full-Stack Development

    — Herausforderung

    • Further development of a SaaS solution with Next.js and Firebase
    • Support with planning new features and advancing the product roadmap

    — Ergebnisse

    • \~60% improvement in load times through implementing a frontend caching strategy and optimising training plan generation algorithms
    • Introduction of unit tests with >80% test coverage on new code
    • Improved development velocity through refactoring and code optimisation
    Next.jsTypescriptTailwindCSSNode.jsTanStack QueryShadcn UI
  • 02 / Case
    Objego

    Objego

    Front-End Development

    — Herausforderung

    • Further development of an existing SaaS product, implementing new features within a Scrum team
    • Regular training and onboarding of new team members
    • Advancing the application architecture in collaboration with other lead developers

    — Ergebnisse

    • Reduction of build and test times by up to 80% by converting a monolithic Angular application into monorepos and micro frontends
    • Successful Angular version upgrades from v15 to v18, including refactoring and adoption of new Angular features
    AngularTypescriptDockerSentry
  • 03 / Case
    eco.income

    eco.income

    Full-Stack Development

    — Herausforderung

    • Full-stack development of a SaaS product including software architecture and data model
    • Close collaboration with the founder for continuous product validation

    — Ergebnisse

    • Built a SaaS product from scratch through to launch including customer onboarding
    • Long-term operation of the platform with high availability
    TypescriptReactTailwindCSSNode.jsDockerGoogle Cloud
  • 04 / Case
    Abo Store

    Abo Store

    Full-Stack Development

    — Herausforderung

    • Ideation, feature conception, and implementation of the complete business idea
    • Building and operating an SEO-optimised web platform
    • Technical implementation of all frontend and backend development

    — Ergebnisse

    • Scaled to over 10,000 monthly visitors through organic traffic
    • Top-3 ranking in Google search for over 100 relevant keywords through targeted SEO optimisation
    • 1st place at the startup competition "Leitidee" in Bochum (2022)
    Next.jsTypescriptNode.jsTailwindCSSShadcn UIFirebase Functions
01/05
— Process

I support you from idea to launch – and beyond

03 phases

  1. 01— Discovery

    Discovery & Planning

    We discuss your project and figure out exactly how I can support you. If everything fits, we create a detailed roadmap. We define and prioritise the most important features before development begins.

    Book a Discovery Call
  2. 02— Build

    Development & Testing

    During development I implement the agreed features by priority. I focus on clean code, regular updates, and thorough testing to ensure quality. You receive regular updates and feedback rounds to make sure we stay on track.

  3. 03— Launch

    Launch & Support

    When you're ready to go live, I take care of deployment and long-term operation. We continue to develop further features and improve the product as needed.

— Testimonials

Testimonials

03 voices

Hira Verick
01 / ReferenceHira VerickDesign / Technology / Strategy @ continuum

There aren’t many true full-stack developers. Fewer still can take on deeply complex problems and genuinely solve them. Nils is both, and more. He brings technical depth, clarity of thought, and a calm, reliable presence to every project. A highly respected and recommended addition to any team. And when he’s not coding, he’s out training for triathlons; a true embodiment of work hard, code hard, play hard. On all fronts, Nils is a machine.

John Drake Brockman
02 / ReferenceJohn Drake BrockmanChapter Lead @ ista

At objego, I worked with Nils in different teams and phases of the company - from greenfield features to legacy migrations. What always impressed me was how quickly he could slot into new setups and immediately start contributing real value. He brings a strong mix of technical depth, calm communication, and the flexibility to adapt to changing requirements. You always felt in good hands when Nils was involved.

Jurij Peters
03 / ReferenceJurij PetersCo-Founder & CEO @ eco.income Engineering GmbH

Nils war einer der ersten, die unser Produkt technisch mit aufgebaut hat. Mit seiner strukturierten Arbeitsweise, Flexibilität und klaren Kommunikation hat er maßgeblich dazu beigetragen, dass wir schnell vom Konzept zur funktionierenden Lösung kamen. Besonders wertvoll war seine Fähigkeit, Unklarheiten in Anforderung proaktiv und kreativ zu lösen und ein gutes Auge für UI.

— Contact

Tell me about your project

Response < 24h

Want to talk about your project? Feel free to reach out via the form or:

— Here's how it works

  1. A no-obligation conversation about your project

    We'll discuss your project and I'll show you how we can tackle it together.

  2. Concept and proposal

    I'll create a detailed concept with a clear timeline and a transparent offer.

  3. Fast execution

    From concept to working solution with regular updates and clear communication.

— Direct

project_request.formlive
— FAQ

Frequently Asked Questions

06 questions