EB
Emmanuel
Biolatiri
Building reliable systems. Based in Manchester.

I work across backend architecture, payment pipelines, distributed services and production infrastructure. Currently engineering walletKit and writing about system ownership and digital pass infrastructure.

View work↓Writing→
[01]Selected Work & Systems

Commercial Architecture & Core Systems

High-scale payment pipelines, commercial distributed services, and mobile wallet platforms designed for production resilience.

Production Work · 2020 — Present
01Platform & Payments Infrastructure
Payments · Platform · Production

NetHub Platform Infrastructure

Payments, subscriptions, platform services, CI/CD and production ownership across commercial systems.

Engineered core payment and subscription infrastructure powering multi-tenant commercial operations. Focused on transactional integrity, idempotent billing webhook ingestion, resilient queue-based event processing, and automated zero-downtime deployment pipelines.

Payment SystemsPlatform ServicesDistributed SystemsCI/CDAWS
02Founder & System Architect
Wallet infrastructure · 2026 →
Core Infrastructure

walletKit

walletkit.app↗

Apple and Google Wallet infrastructure for membership, events, entitlement, updates and validation.

An infrastructure platform that transforms mobile passes from static digital barcodes into live, push-enabled communication and identity channels. Solves cryptographic pass signing, dynamic manifest generation, APNs/Google push synchronization, and low-latency validation.

Apple WalletGoogle WalletPKPassPush InfrastructureCryptography
03Commercial Distributed Backend
Backend systems · Africa

Kuja / AB InBev

Commercial backend systems operating across African markets, with an emphasis on distributed services, scale and production reliability.

Commercial enterprise backend architecture serving high-velocity distribution channels across emerging markets. Tackled distributed data consistency, offline-tolerant synchronization, and reliable transaction processing across variable connectivity conditions.

Distributed ServicesCommercial SystemsResilienceData Scale
[02]Engineering Methodology

Explore → Design → Build → Ship → Operate → Scale

Engineering is an end-to-end discipline. I work across the entire lifecycle — from uncovering the true user problem through Figma wireframing to database schemas, CI/CD delivery, and long-term production telemetry.

Scroll-Synced Matrix
01/Phase
Requirements Specs · Wireframes · Domain Models

Explore

Product investigation, system requirements, Figma prototyping

Execution & Core Disciplines
  • •Translating ambiguous domain problems into clear technical constraints
  • •Interactive Figma wireframing to test UX assumptions before writing schemas
  • •Threat modelling, dependency mapping, and regulatory boundaries
02/Phase
State Machine Graphs · Schema DDLs · API Contracts

Design

Architecture, API contracts, database modelling, payment flows

Execution & Core Disciplines
  • •Relational schema modelling and state machine transition guarantees
  • •OpenAPI specifications, webhook contracts, and idempotency keys
  • •Decoupled asynchronous event architectures and transaction boundaries
03/Phase
Type-Safe Services · Test Suites · Worker Queues

Build

TypeScript, Node.js, Django, distributed services

Execution & Core Disciplines
  • •Strictly typed backend systems with domain-driven modular boundaries
  • •Resilient background workers, queue consumers, and retry strategies
  • •High-throughput cryptographic signing and signature verification engines
04/Phase
Docker Images · CI/CD Pipelines · Cloud Formations

Ship

Docker, CI/CD, AWS

Execution & Core Disciplines
  • •Multi-stage Docker images optimized for minimal attack surface and fast caching
  • •Automated GitHub Actions CI/CD pipelines with lint, typecheck, and migration runs
  • •Infrastructure orchestration on AWS (ECS, RDS, S3, CloudWatch, VPC routing)
05/Phase
Alert Monitors · Operational Runbooks · Audit Trails

Operate

Monitoring, queues, incident response, production releases

Execution & Core Disciplines
  • •Structured JSON application logging, metric dashboards, and threshold alerts
  • •Dead letter queue analysis, automated worker backoff, and recovery runbooks
  • •Zero-downtime rolling deployments and safe database schema migrations
06/Phase
Replication Topologies · Migration Plans · Benchmarks

Scale

Multi-region payments, migrations, commercial infrastructure

Execution & Core Disciplines
  • •Multi-currency payment routing and distributed ledger reconciliation
  • •Read replicas, index optimization, and connection pooling under peak load
  • •Long-term architecture evolution balancing reliability with developer velocity
[03]Featured System Infrastructure
Founder & ArchitectActive Production System

walletKit

Wallet infrastructure for membership, events and entitlement.

Explore walletkit.app↗
Origin & Systems Motivation

“It started with what looked like a small ‘Add to Wallet’ feature. The deeper I looked, the more the interesting problem became issuance, updates, validation, distribution and lifecycle management.”

— Emmanuel Biolatiri, Founder & Architect of walletKit

Architecture Schematic

End-to-End Cryptographic Pass Pipeline

01ORIGIN
Organisation

CRM, ticketing platform, membership DB, or custom API.

Webhook Event Payload
Engine
02SYSTEM
walletKit

PKCS#7 pass signing, Google JWT generation, APNs background worker, and verification scanner APIs.

Signed .pkpass & Push Worker
03WALLET OS
Apple & Google

Native OS wallets across iOS, watchOS, Android, and WearOS.

APNs & Google Wallet Push
04TERMINAL
Member Device

Lock-screen notifications, dynamic barcode scanning, NFC tap, and instant pass verification.

Rotating Cryptographic Token
Pipeline:REST Hook→PKCS#7→Push→Token Sync
Capabilities MatrixSelect to inspect specs
Subsystem Specifications:Issue Infrastructure
[1]PKCS#7 manifest hashing & detached signatures
[2]Multi-tier membership & ticket class templates
[3]Instant web & native in-app 'Add to Wallet' distribution
Production API contracts, pass builders, and webhook telemetry.
Explore walletkit.app↗
[04]Writing & Research

Notes, Architecture & Published Research

Notes from things I am building and trying to understand, alongside peer-reviewed academic literature.

Substack & Elsevier / Next Research
Technical Essays & Architecture Notes
[Essay]Sep 2026

Acquisition Is Being Automated. Retention Is What’s Left.

Why I stopped thinking about wallet passes as digital loyalty cards and started treating them as permanent, push-enabled communication and identity channels.

SubstackRead essay ↗
[Technology]2026

AI agents are going to need passes too

Notes on identity, cryptographic permissioning, single-use tokens, and wallet infrastructure for autonomous agentic software interacting with physical and digital systems.

SubstackRead essay ↗
Published Academic Research
Academic LiteraturePeer-Reviewed Elsevier Journal
Next Research / Elsevier, May 2026

Chemical modification and morphological characterisation of biomass-derived biochars for the adsorptive removal of Pb²⁺, Cu²⁺, and Ni²⁺ from aqueous solutions

Alongside my software engineering work, I am a co-author of academic research in materials and environmental chemistry, reflecting my earlier background in Industrial Chemistry.

Materials ChemistryBiomass BiocharsHeavy Metals AdsorptionMorphological Characterisation
Role: Co-author · Research publicationNext Research / Elsevier · Published May 2026
[05]About Emmanuel
Core Narrative & Engineering Philosophy

I started closer to the interface than the infrastructure.

I studied Industrial Chemistry, moved into software through self-directed learning, and began by experimenting with interfaces and Figma before moving deeper into backend systems.

That still shapes how I think about engineering: architecture starts with what someone is trying to accomplish, not with the database. Understanding user intent and commercial flow leads to cleaner boundaries, better APIs, and systems that scale gracefully without premature complexity.

Today, I operate across the UK and international markets, building resilient payment infrastructure, distributed cloud services, and native digital wallet platforms.

Trajectory & Focus Evolution
Industrial ChemistryOrigin

Materials research & laboratory rigor

Computer TrainingFoundation

Foundational computer science & systems basics

Self-directed JavaScriptTransition

Front-end mechanics, browser execution & web primitives

Early ProjectsApplied

Product experiments, UI prototypes & rapid shipping

FintechDomain

Payment gateways, state machines & regulatory rails

Commercial SystemsScale

Distributed order management & enterprise logistics

Platform EngineeringOperations

Cloud architecture, CI/CD pipelines & production uptime

walletKitCurrent

Digital wallet infrastructure, PKCS#7 signing & push sync

[06]Direct Channels

Let’s talk architecture, payments, or walletKit.

Whether discussing distributed payment systems, mobile wallet infrastructure, or engineering leadership — I welcome thoughtful technical conversations.

hello@manuelbiolatiri.me
GitHub ↗LinkedIn ↗