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Obed Osei Frimpong

Forward Deployed AI Engineer · Fintech & Finance Operations

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Forward deployed AI engineer with 10+ years building production backend and fintech systems. I embed with teams to take LLM and agent systems from demo to production in workflows where mistakes cost money, with evals, guardrails, human review and a full audit trail. Currently building fintech integrations with UAE central-bank and government systems, and architecting an auditable AI reconciliation platform for Gulf finance teams.

Core expertise

AI systems
LLM applications, AI agents & orchestration, RAG, AI data pipelines, evals & regression testing, guardrails, human-in-the-loop design, OWASP Top 10 for LLM Apps
Architecture
Microservices, domain-driven design, event-driven systems, gRPC & REST APIs, multi-tenant SaaS (Postgres row-level security), modular monoliths
Languages
Go, Python (FastAPI, Pydantic), Java (Spring, Hibernate), TypeScript / Node, React
Data & cloud
PostgreSQL, MySQL, Redis, MongoDB · Azure (UAE North, AI Foundry, Document Intelligence), AWS, Kubernetes, Docker, Jenkins
Domains
Fintech & payments, finance operations & reconciliation, UAE regulation, retail & e-commerce, supply chain, blockchain
Spoken
English (fluent), Chinese (intermediate)

Selected AI work

Founder & Architect, Tasweya · AI reconciliation & month-end close for Gulf multi-entity groups

2026 – present

  • Architected an auditable “LLM as adjudicator” pattern: a deterministic, I/O-free matching engine generates candidates, and the model only chooses among them under a strict JSON schema. A deterministic-only mode runs with zero model calls.
  • Designed mandatory provenance (a canonical financial event linked to immutable, content-addressed source files) and an append-only decision log so every automated decision is explainable to auditors.
  • Multi-tenant isolation with Postgres row-level security, UAE data residency on Azure UAE North, and bilingual Arabic/English, RTL-first UX.
  • Mapped the architecture to the OWASP Top 10 for LLM Apps (2025) and the web Top 10. Set an eval gate of ≥85% deterministic auto-match on real anonymised data before MVP.

Case study: LLM as adjudicator, not decision-maker: an auditable AI architecture for financial reconciliation

Builder, SmartComply Digest · smartcomply.ae (opens in a new tab)

2026

  • Weekly, source-linked digest translating UAE regulatory changes (tax, AML, labour, financial services, free zones) into plain language.

Professional experience

Senior Software Engineer, AstraTech · Abu Dhabi, UAE · fintech

09/2024 – present

  • Architect and build major features integrating with the Central Bank of the UAE and other government systems.
  • Lead system design and architecture decisions for core fintech services.
  • Redesigned legacy services for performance, reducing production errors by 20%, and enhance the services powering internal analytics dashboards.

Senior Software Engineer, Decathlon · Shanghai, China · global retail

08/2018 – 09/2024

  • Built a high-availability messaging middleware handling 2,000 transactions/sec, with Go and Java microservices for filtering, processing and logging before dispatch.
  • Designed and built a self-checkout WeChat mini-program, cutting store checkout wait times from 30 to 2 minutes.
  • Migrated product infrastructure from VM-based Docker to Kubernetes, cutting deploy time from 30 to 10 minutes.
  • Back-end engineer on global product development, managing 1,000+ production moulds and assets. Built a React dashboard for message templates and tracking.
  • Led the internal software architecture community and mentored junior engineers.

Case studies: 2,000 TPS messaging middleware for a global retailer · Self-checkout in a WeChat mini-program: store queues from 30 minutes to 2

Full-stack Engineer (AI product), DateMate AI · freelance

04/2023 – 02/2024

  • Integrated LangChain-powered LLM features into a production consumer app. Contributed to system and data-model design.
  • Built UI components wired to backend APIs, and set up CI/CD pipelines deploying to AWS EC2.

Earlier roles

2011 – 2018

  • CTO / System Engineer, NUSIC (Shanghai & Shenzhen, 2018): built the NUSIC blockchain on Hyperledger Fabric and managed a 6-person team
  • IT Team Lead / PM, Preston Capital Holding Group (Shenzhen, 2017–18)
  • Software Engineering Instructor, IPMC (Accra, 2011–13): taught C/C++, Java, the SDLC and project management

Education & certifications

  • B.Eng. Computer Science, South China University of Technology (2017)
  • Advanced Certificate in Software Engineering, IPMC Institute of Technology, Ghana (2011)
  • Certified ScrumMaster (CSM), Scrum Alliance