collaboration
While building our own products, we also build together.
We bring a product studio's engineering discipline to the right client work, with the same care. Web, mobile and enterprise software, with the technology and architecture that fits your project best.
Three ways to work together.
We build our own products, but the door isn't closed. There are three separate ways in: co-building a product, select client projects, or simply trading ideas. Take whichever fits.
Co-built product
You have a product idea and want to build it with us. Joint development, a shared roadmap and a real partnership, not subcontracting.
Tell us the ideaSelect client project
Client work funds our own products, so we take on few projects and the right ones. Web, mobile, enterprise software and API integration.
Discuss a projectIdeas and feedback
If you use or follow our products, we want to hear what's missing and what should change. No contract required.
Send feedbackareas we work in
- Product Development
- Web Development
- Mobile Apps
- Enterprise Software
- API & Integration
- Open Engineering
Web Development
We build corporate websites, SaaS interfaces, e-commerce platforms, and admin panels. We deliver fast, accessible, and scalable products using whichever framework best fits the project's needs.
process
During discovery, we clarify user needs. After wireframe and design approval, we begin component-driven development. Our CI/CD pipeline automatically tests every commit and deploys it to a preview environment; at delivery, we hand over a production-ready product with a Lighthouse score of 90 or above.
What we offer
- Corporate showcase and marketing sites
- SaaS product interfaces and dashboards
- E-commerce platforms (B2C and B2B)
- Admin panels and back-office tools
- Performance-focused development: targeting Lighthouse 90+
- SSG, SSR, and ISR strategies, based on content structure
Technology preferences
Framework
Styling
Data
Deploy
related articles
The Stack-Selection Decision Tree - KELD's Methodology
The 5 questions we ask at the start of every project, and 4 real-world scenarios that illustrate KELD's tech-agnostic approach.
How to Write a Software Project Brief: An SME Guide
A good brief leads to a good proposal. The 7 critical areas we look for in software requests, and how to fill them in.
Next.js or WordPress for SMEs? A Decision Matrix
About 60% of our clients arrive with this question. The answer isn't 'it depends'; there's a clear decision matrix.
Mobile App
We build cross-platform or native apps for iOS and Android, choosing the right approach based on the domain and use case. We have experience in fintech, logistics, healthcare, and e-commerce.
process
We first decide on the platform approach, in most cases starting with Expo. After the UX wireframe and prototype phase, we move to sprint-based development. We run beta tests through TestFlight or internal distribution channels, and we also manage the store submission and review process.
What we offer
- iOS and Android cross-platform development
- Native development when performance is critical
- Offline-first architecture and local data sync
- Push notification and deep link infrastructure
- App Store and Google Play publishing
- Over-the-air (OTA) update infrastructure
Technology preferences
Cross-Platform
Native
Backend
Tools
Enterprise Software
We deliver solutions for business process automation, custom ERP development, CRM integration, inventory management, and reporting. Instead of off-the-shelf packages, we build software designed specifically around your processes.
process
We start with a domain analysis to understand your business processes in detail. Once the architecture and data model are approved, we move into an iterative development process, delivering a working module at the end of every sprint. After completing user acceptance testing in staging, we roll out in a controlled manner.
What we offer
- Order, inventory, and warehouse management systems
- Workflow and process automation
- Custom ERP modules: integrated with existing systems or built from scratch
- Role-based access control (RBAC) and audit logs
- Real-time reporting and analytics dashboards
- Legacy system integration and migration
Technology preferences
Backend
Data
Architecture
Ops
related articles
Self-Hosted vs Cloud - In Defense of the $3/Month VPS
Hetzner CPX11: €4 a month. AWS Lambda + RDS: $80 a month. The gap matters a lot for SMEs.
Microservices Traps: Does a 50-Person Team Actually Need Them?
A reminder that your company isn't Netflix. The real cost of microservices architecture, and the case for the modular monolith.
ERP Software - Build vs Buy: A Decision Guide for SMEs
Read this before you buy Logo Tiger or SAP. Three criteria behind the SME ERP decision, plus a real-world case study.
API & Integration
We build integration solutions for payment, shipping, accounting, and ERP systems, setting up webhook-based, event-driven architectures with REST, GraphQL, and gRPC. This is how we close the gaps between your systems.
process
We start by designing the API alongside an OpenAPI schema, mock server, and test suite. We review the integration documentation of the other party together with you. After development and end-to-end testing in a sandbox environment, we ensure a safe transition to production, then set up monitoring and alerting.
What we offer
- Payment system integrations (İyzico, Stripe, Papara)
- Shipping and logistics APIs (Aras, Yurtiçi, DHL)
- Accounting and ERP software connections
- Webhook infrastructure and event-driven architecture
- OpenAPI / Swagger documentation
- Rate limiting, retry logic, and circuit breakers
Technology preferences
Protocol
Tools
Infrastructure
Reliability
related articles
Trendyol, Hepsiburada, N11 API Integrations - A Practical Guide
The common pitfalls of Turkish e-commerce marketplace APIs, how to solve them, and an architecture pattern that holds up in production.
Microservices Traps: Does a 50-Person Team Actually Need Them?
A reminder that your company isn't Netflix. The real cost of microservices architecture, and the case for the modular monolith.
tech stack
Our tools aren't our solutions.
This list shows what we can use, not what we will use. We determine the right technology for every project together with you.
Frontend
- Next.js
- React
- SvelteKit
- Astro
- Remix
- TypeScript
- Tailwind CSS
- Framer Motion
Backend
- Node.js
- Go
- Python
- FastAPI
- Hono
- Bun
- tRPC
- Prisma
Data
- PostgreSQL
- Redis
- SQLite
- Supabase
- PlanetScale
- Elasticsearch
- S3
- Cloudinary
Mobile
- React Native
- Expo
- SwiftUI
- Kotlin
- Jetpack Compose
- EAS Build
- Reanimated
DevOps
- Docker
- GitHub Actions
- Vercel
- Railway
- Cloudflare
- AWS
- Nginx
- Terraform
Tools
- OpenAPI
- Sentry
- OpenTelemetry
- Grafana
- Biome
- Vitest
- Playwright
- k6
Let's be the right team for the right project.
The first conversation is free; we're with you at every step of the process, from idea to production.
We present a tailored proposal within a week of the discovery call.