u/OstenJap

How I built and validated a SaaS to 300+ paying customers without a technical co-founder

find a CTO or dev partner, so I wanted to share my recent experience bypassing that bottleneck entirely.

For context, I’m a 26-year-old based in Berlin Germany working a day job and hustling in my Indie Hacking project. I had an idea for a niche map directory for digital nomads and tech events. But every developer I talked to either wanted a massive hourly rate I couldn't afford or 50% equity for an idea that wasn't even validated yet.

Instead of getting stuck in tutorial hell for a year trying to learn full-stack development, I decided to lean heavily into AI tools and act more like a project manager than a programmer. Here is the practical breakdown of how I did it:

The Frontend: I used a UI generator called Lovable. I literally just described the interface I wanted, tweaking the prompts until it looked right, and it generated the React components and styling for me. It got me 80% of the way there visually without me having to fight with CSS.

The Backend: Once the UI was done, I exported it to my IDE. This is where I used AI agents Googles Antigravity. I didn't write the raw logic. I just directed the agents to connect my frontend to a Supabase database, set up user authentication, and build out the map logic. When the AI broke something, I just fed it the error codes and told it to fix it. I was orchestrating the build rather than typing it.

The Validation: Because I saved hundreds of hours on coding, I actually had time to talk to my target audience. Instead of a monthly subscription, I offered a one-time lifetime founder pass to test if people actually wanted the tool enough to pull out their credit cards.

I recently got my first customer who bought the life time membership

It’s not buying me a private jet, but making my first real software revenue proved a massive point to me: the technical barrier to entry is basically gone. If you understand basic logic and user experience, you don't need to give away half your company to a dev on day one just to build an MVP.

Curious to hear from other non-technical founders in here—are you starting to use this kind of AI-assisted stack to build your MVPs, or are you still actively hunting for technical co-founders?

reddit.com
u/OstenJap — 12 hours ago
▲ 1 r/NoCodeSaaS+1 crossposts

From Lovable to IDE to a paid customers: How a mechanical engineer built a SaaS without hand-coding.

Hey everyone, I know we are all constantly testing new stacks in here, so I wanted to share the exact workflow that finally helped me cross the finish line.

I’m a 26-year-old mechanical engineer, and I just made my first SaaS lifetime sales on my side project. (Full disclosure as per the sub rules: I am the sole founder and creator of the app, Hackamaps). Six months ago, I was juggling my day job and trying to manually learn and type out boilerplate Vite, React, and Supabase code. I was exhausted, moving way too slow, and honestly about to quit. Then I completely changed my approach, leaned into the "vibe coding" movement, and let the AI do the heavy lifting. I stopped acting like a syntax checker and started acting like a director.

Here is the exact "no-code to low-code" pipeline I used to get to my first customers:

Step 1: The UI & Frontend with Lovable I wanted to build a global map for hackers and digital nomads to find hackathons worldwide. Instead of stressing over every single component in Tailwind CSS, I used Lovable. I fed it my vision, and it rapidly generated the beautiful, responsive frontend components I needed. It got me 80% of the way there visually in a fraction of the time. After awhile it became buggy and my senior SWE told me to start from scratch and I took the leap of Faith.

Step 2: Exporting to the IDE & AI Agents Once the Lovable frontend was solid, I moved the code into my IDE. This is where I brought in my AI agents (mostly orchestrating between OpenClaw and NanoClaw). I directed the agents to wire up the complex backend stuff—connecting the Lovable UI to my Supabase database, setting up auth, and writing the logic for the interactive map pins. I barely typed any raw code; I just managed the prompts and the architecture.

Step 3: Focusing on the Customer Because I saved hundreds of hours not fighting with syntax errors, I was actually able to spend my time talking to users, doing marketing, and refining the UX.

The result is a live, functioning app, and a person paid for the membership and also recurring visitors (meaning, simply sticks). It proves you don't need an 80-hour manual coding week to ship a profitable product in 2026. The AI builds the engine; you just have to steer the ship.

For the other solo builders in here: have you experimented with exporting Lovable directly to your IDE yet? What does your AI/No-code stack look like right now for handling the backend?

reddit.com
u/OstenJap — 12 hours ago
▲ 12 r/saasbuild+1 crossposts

1st of May my life changed

Never thought I would be on here saying this but I finally left my job after 3 years of building websites/apps

I would never quit but I was getting drained from all the work I was doing with no results

Then on 24th of April I started building another project. I had the idea on the night so I got up out of bed and started writhing my idea down

29th of April I finished my project and filmed my first video.

170k views later

Sales started coming in there was one then another then another

$1655 in payments

The idea was simple you fill in a business/job profile. What you’re looking for and our ai scans millions of businesses to find a perfect match for you.

Now I’m stuck because I don’t know what to do next

reddit.com
u/OstenJap — 13 hours ago
▲ 4 r/Buildathon+1 crossposts

26yo mechanical engineer here. I just made my first indie hacking revenue—what goals should I set now to actually reach financial freedom?

Hey everyone, I’m a 26-year-old mechanical engineer who recently dove headfirst into the SaaS/indie hacking world, and I’m buzzing right now because I just made my first actual revenue from a project I built. I’m used to working with physical machines, so getting strangers on the internet to pull out their credit cards and pay for my code feels completely surreal. It’s definitely not "quit my day job" money yet, but getting those first few sales is the ultimate validation that this path is actually viable and not just a pipe dream.

Now that the "zero to one" phase is done, I want to make sure I'm setting the right foundations to eventually reach total financial freedom. For those of you who have successfully transitioned to building SaaS full-time, what goals or KPIs should I be focusing on right now? Everyone talks about revenue and MRR, but what are the hidden metrics (like cost-to-serve, conversion rates, or specific personal milestones) that actually determine if a project can replace a 9-to-5?

I'd love to hear your frameworks for scaling sustainably so I don't screw up this momentum!

reddit.com
u/OstenJap — 13 hours ago

I am in Love with Data and decided to build the Palantir for tracking the Elite. Spoiler: I went elsewehere UNEXPECTED

Watching eyes wide shut makes me feel like a pawn in a game. I am a different pawn, if you wanna send me to the battlefield and die for you. At least you get to see my middle finger.

I saw a post on open source palantir (Data Aggregator to see thru public data) and think, wait .... I can just mess around with something like this and let people see how the real world works and people will be paying for this right ??? I did a bit of researched and found out I can get in hell lot of trouble for this and I thought maybe I can see it to journalist but now it is a B2B tool which is less fun.

So I decided to just do the obvious for now. Find out who else needs this information ? Exactly people who bet in Polymarket. Tbh, if they wanna lose money, at least do it right or increase your chances right ?

So I did a bit of market research and found out what people actually wanted:"Nobody wanted better data. They wanted to know when their data stopped working."

Think about this: Every information that is used for betting has an expiry date. A signal that predicted Fed decisions at 81% accuracy in January was at 61% by December just because more people found out about it. No data dashboard just a signaltracker that tells you when your edge about to expire.

Still early. Have a working calibration layer and an inefficiency finder. Looking for people who've been burned by a dead edge and want to stress test whether this would have caught it.

Dear Redditor, what are some counterintuative stuff did you discover a lot the way of building?

reddit.com
u/OstenJap — 4 days ago
▲ 96 r/informatik+1 crossposts

Ein winziger Betrag, aber ein riesiger Meilenstein: Meine ersten 49€ online (nach 6 Monaten Hustle neben dem Vollzeitjob) 🚀

Hallo zusammen,

ich weiß, in einem Subreddit, in dem es oft um GmbH-Gründungen, Skalierung und fünf- bis sechsstellige Monatsumsätze geht, klingen 49€ nach absolut nichts. Aber psychologisch ist es für mich gerade ein gigantischer Durchbruch und ich musste das einfach mit Leuten teilen, die diesen Weg verstehen.

Die Kurzfassung: Ich habe die letzten 6 Monate neben meinem regulären Vollzeitjob als Ingenieur gefühlt jede freie Minute und unzählige schlaflose Nächte in ein Software-Projekt gesteckt, das ursprünglich aus einem Hackathon entstanden ist.

Es gab in dieser Zeit so unfassbar viele Momente, in denen ich extrem gezweifelt habe. Ich dachte wirklich oft, ich hätte einen riesigen Fehler gemacht und verschwende einfach nur meine Lebenszeit für etwas, das ohnehin nie jemand nutzen wird.

Aber heute kam die Benachrichtigung rein: Jemand hat den Wert und die Arbeit hinter dem Projekt gesehen und tatsächlich 49€ dafür bezahlt.

(Um Regel 3 zu respektieren: Ich nenne hier ganz bewusst weder den Namen des Projekts noch poste ich irgendwelche Links. Es geht mir null um Promo, sondern einzig und allein um dieses Gefühl, dass aus einer Idee und viel Kopfschmerzen auf einmal echter Umsatz wird).

Für mich ist das der endgültige Beweis: Das Konzept funktioniert. Aus "vielleicht klappt es" ist ein "es ist real" geworden. Jetzt geht es darum, die Prozesse zu verstehen und das Ganze auszubauen.

Für alle, die hier vielleicht still mitlesen, noch ganz am Anfang stehen und nach Feierabend an ihren Projekten zweifeln: Bleibt dran. Es dauert manchmal ein halbes Jahr, bis die erste Bestätigung kommt, aber das Gefühl ist unbezahlbar.

An die alten Hasen hier im Sub: Erinnert ihr euch noch an euren allerersten verdienten Euro in der Selbstständigkeit/im Side-Business? Wie lange war eure "Durststrecke" am Anfang und wie hat sich dieser erste Abschluss angefühlt?

Viele Grüße an alle Mitgründer!

reddit.com
u/OstenJap — 12 hours ago
▲ 2 r/AppBusiness+1 crossposts

Dear Vibecoders what are you current stack and how does your workflow look like?

I am using Antigravity and I am not quite satisfied because it got worst overtime

reddit.com
u/OstenJap — 8 days ago

Building a geopolitical signal aggregator — looking for feedback on data sources and architecture

I've been frustrated with how reactive most business intelligence tools are when it comes to geopolitical risk. By the time an event surfaces in a news feed or a vendor risk alert, the decision window has already closed.

I'm prototyping a dashboard called SignalEdge that pulls from fragmented public data sources to surface leading indicators — the kind of signals that precede the headline rather than follow it.

Current data layers I'm designing around:

  • Logistics Intelligence: ADS-B flight tracking and marine traffic monitoring in high-tension regions — private aviation patterns in particular tend to correlate with off-calendar diplomatic activity
  • Capital Flow Signals: SEC/regulatory filings, 13F movements, and institutional positioning shifts that suggest actors are repositioning ahead of a known or anticipated event
  • Entity Relationship Mapping: Connecting public but fragmented data across corporate registries, sanctions lists, and ownership structures to surface non-obvious relationships between global actors

The core thesis is that most of this data is technically public, but it's siloed across dozens of sources with no unified layer — so the intelligence value gets lost.

A few open questions I'm genuinely wrestling with:

  1. For those of you building or using geopolitical risk dashboards professionally — is real-time logistics data (flight/vessel tracking) something your org actually acts on, or does it tend to be directionally interesting but operationally noisy?
  2. What's one data source your team tracks manually right now that you haven't been able to automate cleanly? (regulatory filing alerts, port congestion indexes, politician disclosure filings, etc.)

I'm looking for a small group to stress-test an early alpha and give honest feedback on whether the signal-to-noise ratio is actually useful for decision-making. Happy to share more detail on the stack in the comments.

Thank you in advance

reddit.com
u/OstenJap — 9 days ago

Is anyone else tracking private jets/SEC filings to get an edge on Polymarket?

Hey guys,

I've been betting on geopolitical events (conflicts, sanctions, diplomatic shifts) lately and realized the standard news cycle is way too slow. By the time it's on Twitter, the odds have already shifted.

I'm currently building a custom dashboard (tentatively called SignalEdge) that aggregates the "real world" data that actually moves the needle before the news hits.

The goal is to track:

  • Elite Logistics: Real-time tracking of private jets (ADS-B) and marine traffic in high-tension areas.
  • Money Flows: Major financial filings and "insider" activity that signals institutional shifts.
  • Power Dynamics: Mapping connections between global entities using public but fragmented data.

Basically, I want to provide the "password" to what's actually happening behind the scenes so we aren't just gambling on sentiment.

My question for the heavy bettors here:

  1. If you had a live feed of where specific high-net-worth individuals were landing right now, would that actually change your betting volume?
  2. What's one data source you're currently tracking manually that you wish was automated? (e.g., specific politician stock trades, cargo ship delays, central bank governor travel, etc.)

I'm looking for a few people to eventually test the alpha version and tell me if the data is actually actionable for prediction markets. Let me know what you think.

reddit.com
u/OstenJap — 10 days ago

Is anyone else tracking private jets/SEC filings to get an edge on Polymarket?

Hey guys,

I've been betting on geopolitical events (conflicts, sanctions, diplomatic shifts) lately and realized the standard news cycle is way too slow. By the time it's on Twitter, the odds have already shifted.

I'm currently building a custom dashboard (tentatively called SignalEdge) that aggregates the "real world" data that actually moves the needle before the news hits.

The goal is to track:

  • Elite Logistics: Real-time tracking of private jets (ADS-B) and marine traffic in high-tension areas.
  • Money Flows: Major financial filings and "insider" activity that signals institutional shifts.
  • Power Dynamics: Mapping connections between global entities using public but fragmented data.

Basically, I want to provide the "password" to what's actually happening behind the scenes so we aren't just gambling on sentiment.

My question for the heavy bettors here:

  1. If you had a live feed of where specific high-net-worth individuals were landing right now, would that actually change your betting volume?
  2. What's one data source you're currently tracking manually that you wish was automated? (e.g., specific politician stock trades, cargo ship delays, central bank governor travel, etc.)

I'm looking for a few people to eventually test the alpha version and tell me if the data is actually actionable for prediction markets. Let me know what you think.

reddit.com
u/OstenJap — 10 days ago

I built a free interactive map to find technical co-founders, hackathons (mini-accelerators), and early-stage European VCs. Would love your feedback!

Hey r/startupaccelerator,

A lot of great startups are born out of hackathons—they are essentially weekend-long mini-accelerators where you build an MVP under pressure, find a co-founder, and sometimes even get funded by the judges.

I realized how hard it was to find these opportunities and connect with local builders, so I built Hackamaps. I recently made the entire platform 100% free for the community.

🎯 Purpose & Core Functionality (as per the sub rules): Hackamaps is a map-based visual directory designed to help early-stage founders get off the ground. Its core features include:

  • The Hackathon Map: An aggregated, live-updating map of global developer events and active prize pools.
  • The Teammate "Face Map": A visual pinboard where you can find local technical co-founders or team members based on their location and tech stack.
  • The Investor Google Sheet: A fully accessible, curated list of 200+ European Early-Stage & Seed VCs who specifically look for hackathon-stage projects and solo founders.

💬 Feedback Request: I'd love to know what this community thinks of the UI. For those of you currently looking for technical co-founders or pre-seed funding, does a geographic map view actually help you more than a traditional list/spreadsheet?

Let me know your thoughts or if I should add any specific data points to the VC list!

Link:https://hackamaps.com

reddit.com
u/OstenJap — 10 days ago

[Showcase] The first $49 of my Vibe Coding empire has arrived 🧘‍♂️💸

Listen, I know everyone here is building the next massive AI startup, but I need to celebrate a monumental milestone: I just hit a lifetime revenue of exactly $49.

Six months ago, I was typing out boilerplate code like a peasant. Then I discovered the art of vibe coding. I stopped typing. I started directing.

I built a small app for a hackathon. I didn’t worry about the underlying architecture, I didn't stress over the stack—I just booted up Claude and Cursor, gave it a few incredibly vague prompts, and let the AI do the heavy lifting while I focused purely on the vibes and the vision.

Today, someone actually paid me $49 for it.

Is it going to buy me a yacht? No. Am I looking into offshore tax havens just in case? Absolutely.

The most beautiful part about this isn't the money; it's the fact that I generated my first internet income with about 90% less typing than I used to do. Vibe coding works, folks. The AI built the engine, I just steered the ship.

For the other directors out there: what tools are you currently vibing with, and how long did it take for your first AI-assisted project to generate actual cash?

reddit.com
u/OstenJap — 10 days ago

Geographic distribution of €2.4M in active software developer hackathon prize pools (May 2026) [OC]

u/OstenJap — 10 days ago

I got sick of watching indie hackers and solo devs argue on Twitter about the "best" cities to code from, while completely ignoring where the actual capital is flowing.

Everyone is sitting in a cafe in Lisbon or Bali complaining about finding a co-founder. So, I scraped the data of 123 upcoming hackathons and their prize pools to see where the real networking and cash are actually happening this year.

The data doesn’t lie. If you want to travel, write code, and actually get paid or funded, here is where you need to be positioning yourself right now:

🔥 1. The Heavy Hitters (Where the big prize pools are hiding) Forget the saturated SF events. The real cash grabs right now are quietly sitting in places you probably aren't looking:

  • Hamburg, Germany: "Cove Hacks" is dropping a $30,000 prize pool.
  • Hillside / Los Angeles: "HackNation" and "LA Hacks 2026" have a combined $50,000+ up for grabs right now.
  • Tangerang Selatan, Indonesia: If you must be in Southeast Asia, go here. The "Real World AI Agents" hackathon is putting up $15,000. Stop drinking coconuts in Canggu and take a cheap flight.

📍 2. The Uncontested European Hubs (High density, low competition) Lisbon is tapped out. If you want a high density of events to maximize your networking, the raw data shows these are the top 3 cities right now:

  • London (6 upcoming major events)
  • Amsterdam (5 upcoming major events)
  • Barcelona (3 upcoming major events)

You can easily base yourself in Amsterdam or Barcelona, take a €40 Ryanair flight between them, and hit 8 different tech events in a single month.

🧠 The Takeaway You don't need a massive marketing budget or a warm VC intro to build a startup. You just need to physically put yourself in the rooms where the money is already sitting on the table.

The Tool (Why I pulled this data): I was tracking all of this in an ugly CSV, which sucked. So I built an automated map to track these high-ROI cities for my own travels. It maps out all the global hackathons, shows the active VCs in the area, and has a "facemap" where solo devs can drop a pin to find roommates or build teams before they even land in the city.

I made it totally free to play around with. You can see the live data at hackamaps.com.

Stop guessing where the networking is. Follow the prize pools. Let me know if anyone else is heading to Europe this summer, I’ll be dropping my pin on the map.

u/OstenJap — 23 days ago