Designing Enterprise APIs in Appian: Beyond the Basics
An advanced guide to Appian Web APIs covering API Gateways, multipart document conversion, payload batching, and enterprise integration patterns.
Your Dedicated Tech Partner.
No IT department? Outgrown your current tools? We become your dedicated tech partner — building custom software, connecting your systems, and fixing what's broken. Without the agency overhead or the enterprise price tag.
See What We Can Do
Senior-Level Thinking. Startup-Friendly Terms.
One specialist. Fully committed to your project.
At Codzelerate, you work directly with Sunil — not a salesperson who hands you off to a junior team. After 14 years building mission-critical software for Aegon, Rabobank, Knab, and other major Dutch institutions, the mission is now simpler: bring that same engineering discipline to businesses that need it but can't justify a full IT department. You get clear thinking, practical solutions, and someone who's still around when things need fixing — at a size and cost that actually makes sense.
Sunil Zacharia Founder & Lead Consultant — Software Engineer & Architect
14+ years building software for some of the Netherlands' largest financial institutions — Aegon, a.s.r., Knab, ICS, and Rabobank. Now bringing that same level of expertise to growing businesses, without the enterprise overhead. Based in Hoofddorp, Netherlands.
What We Can Help You With
From building your first business app to scaling a complex enterprise platform — there's a service here for where you are.
Outsourced Tech Partner
No IT department? No problem. We act as your dedicated technical partner — helping you figure out what to build, how to build it, and making sure it actually works. You get senior engineering expertise in your corner, without the overhead of a full-time hire.
Website & Web App Development
Need a professional website, a client portal, or a custom internal tool? We build fast, modern web solutions that look good, work reliably, and grow with your business. No templates. Built to your exact requirements.
Also on Fiverr →Legacy System Modernization
Still running on spreadsheets, old databases, or software the vendor stopped supporting? We help you move to something modern — keeping your business logic intact while cutting the technical debt that slows your team down.
Platform & Architecture Advisory
When your platform is growing and the technical decisions are getting harder, you need an independent perspective. We review architectures, surface design risks, and help your team make better long-term choices — before those choices become expensive to undo.
Appian Mentorship
Empowering developers to reach the next level of proficiency. We provide specialized mentorship focusing on advanced design patterns and enterprise-grade implementation techniques.
Smart Home Automation
Apple HomeKit-powered automation for modern homes and offices. Secure, seamless, and built to work reliably every day — not just in the demo.
Also on Fiverr →What People Say
"Sunil is a great colleague to work with. He thinks in terms of solutions and contributes to the successful resolution of various processes and issues. Sunil is very meticulous, fast, and always has an eye for detail."
"I greatly appreciate working with Sunil. He consistently brings a strong solution-oriented approach and contributes effectively to resolving both operational and process-related challenges. He often thinks outside the box and introduces creative, practical ideas that strengthen our problem-solving efforts. Sunil delivers work that is accurate, efficient, and detail‑focused. His professionalism, proactive attitude, and reliability make him a highly dependable colleague whose contributions have a clear and positive impact on the team."
"Sunil worked as a freelancer for over 2 years and I can recommend him as a skilled, professional Developer. Sunil was a joy to work with, always friendly , cooperative and responsive. I would have no hesitation in working with him again."
"Sunil delivered good work and the client was very satisfied with his output. He was polite and professional."
Thinking Out Loud
Notes on building better software — from enterprise architecture to practical tools for everyday businesses.
Let's Figure Out What You Need.
Send a message or book a free 30-minute call. No sales pitch — just an honest conversation about whether we can help.
Email contact@codzelerate.com
Location
Hoofddorp, NL
Hours
Mon - Fri: 9am - 10pm
Sat: 9am - 6pm / Sun: 9am - 12pm