CRM + ERP · Fleet tracking
Commercial CRM and finance
From lead to work order, warranty and invoice without jumping between systems. One place for sales, warehouse and finance.
26 modules in production
What we built →
Custom software
Software adapts to your company.
Not the other way around.
We build platforms, apps and infrastructure around how your team already works. Optimized delivery, security from the first commit, and pricing that actually closes.
+18
Projects delivered
5
Stages with a deliverable
2 wks
Per development sprint
Trusted by
Services
Everything from the idea to the server it runs on.
One team for product, code and infrastructure. No handoffs between vendors, no gaps where responsibility gets lost.
Custom software
When the operation works but lives scattered across spreadsheets, WhatsApp and a system nobody wants to touch, buying another licence does not fix it. We build the system around how your team already works, and hand over the code and the documentation.
See the service →Mobile apps
An app makes sense when the work happens away from a desk: on the road, on a route, on the sales floor or at the customer’s home. We build for iOS and Android from a single codebase, and we take on what usually gets underestimated — store releases, notifications and secure access.
See the service →Web platforms
A corporate site and a web platform are different things and it pays not to confuse them. The first has to load instantly and rank; the second has to carry users, permissions and data. We build both, and we tell you which one you actually need before quoting.
See the service →Servers & infrastructure
Infrastructure is only noticed when it fails. We install, configure, migrate and monitor servers on-premise or in the cloud, and we leave it documented so the next person to touch it — you or someone else — understands what is there and why.
See the service →Technology consulting
Sometimes the right decision is not to build. It is knowing whether what you have can be saved, whether the current vendor is doing fine, or whether that platform you are about to buy holds up to what it promises. We give the second technical opinion, in writing and with arguments you can take to your board.
See the service →Security & support
Security is not a phase bolted on at the end, nor an upsell. It goes inside the project from the first commit. And once the system is in production, support with committed response times is what separates an incident from a crisis.
See the service →Why RSDVELOP
We innovate on four things at once.
Pricing
Modular scopes and fixed-price phases. You know what you pay before you commit, and you can stop between phases.
Technology
Current stacks and AI-assisted delivery. We adopt what shortens the path, not what looks good on a slide.
Security
Threat modelling, least privilege and encrypted backups are part of the build, never a phase-two upsell.
Process
Weekly demos, one accountable lead and a shared board. You always know what moved and what is next.
How we work
Five steps. No surprises.
Each phase closes with something you can see and approve: a document, a prototype, a working build.
01
Diagnosis
A working session to map the process, the constraints and the real cost of the problem.
02
Scope & quote
Phases, deliverables, dates and a fixed price per phase. Written down before anyone codes.
03
Design & architecture
Interface, data model and infrastructure decided together and approved as a prototype.
04
Sprint delivery
Two-week cycles with a demo at the end of each one. You steer while it is still cheap to steer.
05
Launch & support
Deployment, documentation, team training and a support window with a defined SLA.
Selected work
Shipped, running, in production.
Each project is described by what it does and the sector it serves. Client names and logos are shared only with their permission.
SaaS · Systems integration
ERP layer over an existing CRM
The team already lived in their CRM and wasn't going to drop it. We built the ERP on top — inventory, sales and finance — mirroring its data instead of replacing it.
Real-time API data mirror
What we built →
Web platform + app · Real estate
Condo management and access control
End-to-end administration: an admin panel, a resident app and visitor scanning at the security gate.
3 products + payments API
What we built →
Mobile app · Logistics
Real-time fleet tracking
Every unit's live position on the phone. A thin proxy handles the server's self-signed certificate so iOS doesn't block the connection.
Live position over sockets, no polling
What we built →
Web platform · Social impact
3D-printing network for humanitarian aid
Coordinates a 3D-printing community to produce aid parts: who needs them, who is printing them and where they get delivered.
Full stack in Docker · Documented API
What we built →
Data and quant · Finance
Quantitative trading system
A cumulative-delta strategy ported to three platforms, with its own backtesting engine, parameter optimizer and a trained signal filter.
3 platforms · Backtest + optimizer + ML
What we built →
Stack
Chosen for your case, not for our comfort.
We work across web, mobile, data and infrastructure. The proposal explains why each piece is there.
ReactNext.jsReact NativeExpoNode.jsTypeScriptPythonFastAPILaravelPostgreSQLMySQLFirebaseDockerLinuxGoogle CloudAWSStripe+ your current stack
Tell us what is not working. We'll tell you what it takes.
Free 30-minute diagnosis session. You leave with a scope outline and an estimate range, whether you hire us or not.
FAQ
The questions you were going to ask on the call.
How much does a custom project cost?
It depends on scope, so we quote per phase with a fixed price. The diagnosis session is free and ends with a written estimate range.
How long until I see something working?
Typically two weeks to the first usable build, then a demo every two weeks until launch.
Who owns the code?
Yours. Repository, credentials and documentation are transferred to you at delivery, with no vendor lock-in.
Can you take over an existing project?
Yes. We start with a technical audit of the codebase and infrastructure, and tell you honestly what to keep and what to rewrite.
Do you handle servers and security too?
Yes. Installation, configuration, migration, hardening, backups and monitoring, on-premise or in the cloud.
What happens after launch?
A support window is included, and you can continue with a monthly maintenance and evolution plan with a defined SLA.
Blog
What we learn, written down.
Don't replace your client's CRM. Build on top of it.
The team already lives in their CRM and won't give it up. How we built an ERP layer on top of GoHighLevel by mirroring its data, without asking anyone to switch tools.
June 18, 2026
Your API has a self-signed cert and iOS blocks it
App Transport Security isn't negotiable, and you shouldn't disable it either. A thin proxy handles TLS, adds CORS, and gets credentials out of the binary.
May 27, 2026
Human-in-the-loop automation: when not to bypass the CAPTCHA
A government portal uses reCAPTCHA because it wants a person to book. The right tool watches, prepares and alerts — the operator still makes the final click.
April 30, 2026