Technical Business Analyst · Fintech & Telco
Business meets Engineering
10+ years bridging product, data, and engineering — from telecom infrastructure at AIS to fintech at KBTG. I turn messy requirements into things teams can actually ship.
I'm Sopanat Sutamchai — a Technical Business Analyst currently at KBTG Labs, working on MAKE by KBank. My background started on the technical side at AIS, where I owned API infrastructure and managed integrations for 100+ partners, before moving into product and BA work in fintech.
What I enjoy most is working at the intersection of business, UX, and engineering — where the constraints from all three sides push you to find solutions that actually work in the real world.
I can talk system flows with engineers in the morning and sit in a strategy session with stakeholders in the afternoon. That range is where I feel most useful.
I pay attention to who's in the room — what each stakeholder actually needs, not just what they say they want. Understanding the people behind the requirement is usually how you find the real problem.
When business and engineering are talking past each other, my job isn't to pass messages — it's to reframe the problem so both sides can move forward. I'm comfortable sitting in both worlds.
I like things to be clear — clear flows, clear owners, clear decisions. Not because I need control, but because ambiguity wastes people's time and energy. Good structure is a form of respect for the team.
I'd rather ship something that works and matters to users than build something technically elegant that nobody asked for. The measure of good work is whether it actually helped.
MAKE is KBank's standalone money app — and my job is to sit at the junction of product, marketing, and engineering to make features actually happen. I own the requirements side, run the Agile ceremonies, and stay involved all the way to deployment. The part I find most interesting is when a business goal, a user need, and a technical constraint are all pulling in different directions — figuring out what actually ships is where most of the real work happens.
I owned AIS' internal API Gateway — the infrastructure that lets 100+ internal teams and external partners access AIS's systems. Most of the work was about making complex integrations feel manageable: writing clean specs, onboarding partners end-to-end, and building a self-service portal that cut what used to take days down to minutes. Toward the end of this role I also led the identity work for AIS customers — defining how login and registration should actually work across the platform.
My first role out of university — working on backend systems that decided how internet quota was distributed and which package each user got in real time across the 3G/4G network. It was deep infrastructure work, and it gave me a solid foundation in how large-scale systems behave under pressure.
Full Resume
Download my resume for a full overview of experience, skills, and background.
PDF · Updated 2025
Led end-to-end requirements and delivery for a centralized cross-sell platform inside MAKE by KBank — covering credit cards, loans, and investment products. Designed the product shelf management system (including a CMS for campaign arrangement and product visibility), which became the app's primary revenue stream.
Orchestrated end-to-end analytics tracking via Firebase and BigQuery/Datalake to support data-driven decision-making across the product. Focused on tracking attribution, funnel analysis, and feature performance — giving the team visibility into what was actually working.
Owned the core money management features within MAKE — including cloud pockets and tools designed around the app's "จัด" (organize) concept. Focused on helping users take better control of their finances through clear, intuitive product flows.
Designed and launched a self-service Partner Onboarding Portal for AIS' internal API Gateway, cutting lead time from days to minutes. Managed end-to-end technical integration for 100+ partners — covering API access control and secure authorization flows using RFC OAuth 2.0.
Owned the user identity domain for the myAIS app — defining and delivering functional specs for the login and registration flow. Worked across security requirements, UX constraints, and backend integration to get the modules into production.
Over the past few years, I've realized I'm most energized by problems that sit between product strategy, system design, and operational reality.
I'm particularly interested in building platforms and internal systems that help teams move faster — whether that's growth infrastructure, product tooling, analytics ecosystems, or AI-assisted workflows.
The future of product work feels increasingly cross-functional: less about isolated feature delivery, and more about connecting data, systems, and people into a workflow that actually scales.
That's the direction I want to keep growing toward.
Open to new opportunities, collaborations, and interesting conversations. Don't hesitate to reach out — I'd love to connect.