Freelance Software Engineers in Federal Capital Territory

Freelance Software Engineers in Federal Capital TerritoryFreelance Software Engineers in Federal Capital Territory

Projects People

Bright Sylvester

RevOps & Agentic Systems Architect 🌊

22: Followers

RevOps & Agentic Systems Architect 🌊

Cover image for New Project Launch(Q3): SparkleNET Corridor

New Project Launch(Q3): SparkleNET Corridor Guardian 🛡️⚡ Just published our latest build at SparkleNET, the Corridor Guardian, an autonomous Edge AI infrastructure monitoring and threat triage system designed for trade corridor security. When securing physical infrastructure and trade routes, cloud-processing delays simply don't cut it. We built a localized telemetry pipeline that ingests, triages, and visualizes live threat data with sub-70ms latency. Key Highlights: * Sub-70ms Response: Edge nodes handle anomaly detection locally with minimal transit overhead. * Resilient Architecture: Continuous fail-safe logging, even during WAN network disruptions. * Tech Stack: Python, Edge AI, n8n, Docker, Caddy, and a clean Tailwind CSS live dashboard. Check out the full breakdown and system architecture on my profile! 👉 Live Demo: https://sparklenet.space/dashboard/index.html https://sparklenet.space/Portfolio.html

2

1

202

Cover image for SparkleNET Corridor Guardian:
Edge Telemetry

SparkleNET Corridor Guardian: Edge Telemetry & Object Detection Prototype Project Overview & Engineering Objective The Corridor Guardian is a lightweight, edge-computed telemetry sandbox designed to simulate real-time object detection and status monitoring completely offline. Engineered to test high-resilience IoT and data pipelines without relying on continuous cloud connectivity, this prototype highlights zero-latency systems architecture at the edge. Technical Architecture & Implementation * Sandbox Environment: Deployed a local 1-Node Lab Sandbox utilizing Termux running directly on an Android device for hardware-agnostic edge simulation. * Messaging & Communication Protocols: Integrated MQTT messaging pipelines to handle low-overhead telemetry ingestion and real-time event dispatching. * Workflow Automation: Leveraged n8n data flows to orchestrate asynchronous data routing and local event-handling loops. * Edge Scripting & Directory Mapping: Programmed a custom Python edge-loop script that maps local directory trees to simulate live object detection telemetry streams under completely offline conditions.

1

115

Cover image for SparkleNET Authority Sovereign: Project Case

SparkleNET Authority Sovereign: Project Case Study SparkleNET Authority Sovereign is an advanced, sovereign digital infrastructure and automated revenue operations (RevOps) platform engineered to eliminate operational friction. Structured around a secure administrative portal (portal.sparklenet.space), the project bridges the gap between high-throughput system automation and refined executive collaboration. Architecture & Technical Stack Cloud Infrastructure & Routing: Configured a secure virtual private server (VPS) environment utilizing custom Nginx and Caddy relative volume mappings to manage live deployment and SSL routing seamlessly. Workflow Automation Engine: Engineered robust backend automation pipelines using n8n, connecting asynchronous data triggers with zero-latency execution loops. Modular Edge Scaling: Designed resilient architecture blueprints capable of supporting local sandboxes (such as Termux and MQTT edge-loop testing) for offline telemetry and robust data validation.

1

102

Cover image for Stop letting manual follow-ups and

Stop letting manual follow-ups and leaky funnels stall your growth. True lead generation isn't about chasing cold contact. It's about building automated, zero-friction systems that capture and convert traffic effortlessly. Optimize your pipeline, scale your outreach, and let infrastructure do the heavy lifting.

2

5

556

Software Engineer(3)

Converting ideas to digital products/solutions 💻

1x: Hired

5.0: Rating

2: Followers

Converting ideas to digital products/solutions 💻

Cover image for Kantisoft: Multi-Tenant POS Application

Kantisoft: Multi-Tenant POS Application

0

12

Cover image for Full Functioning E-commerce application

Full Functioning E-commerce application

0

12

Cover image for A Cool Drift Landing Page Design

A Cool Drift Landing Page Design

0

14

Cover image for E-Commerce Software

E-Commerce Software

0

6

Software Engineer(2)

OBI PASCAL BANJUARE

proAbuja, Nigeria

CTO - blending AI, product, code, and DevOps to build apps.

CTO - blending AI, product, code, and DevOps to build apps.

Cover image for When you're a FinTech Engineer

When you're a FinTech Engineer and you're excited about AI. A called around 11pm NGT and said: Friend👱‍♂️ : Hey Obi, I've got this client from Canada there want an AI Fitness app Its really an exciting project you should add it to your portfolio. At first I was a bit reluctant, but after a lot of persuasion as someone who enjoys working with me, he keeps talking about the project every single opportunity he has for a good friendly conversation. I finally agreed! 4-months down the line - Find Your Fitness was born! As a Sr. Engineer on the team, one of my core responsibility was to coordinate the project from spring planning, task assignment and follow-ups on ticket to make sure the team were on track with schedule. Jira was my home screen 😂 every morning 😭 . The design team where my friends heading did a great job, but I almost got a heart attack at one time 😂 . It was an exciting adventure indeed, am glad I took my friend up on the offer.

0

56

Cover image for "If money touches your system,

"If money touches your system, a ledger should touch it first." Your backend should be ledger-first by design. If there's even a 0.00001% chance that money, balances, fees, commissions, credits, refunds, rewards, or anything involving an amount will flow through your system, every movement should be recorded in a ledger using double-entry accounting principles. This isn't just for banks, fintechs, or payment processors. Whether you're building: =>A payment rail => An e-commerce platform => A marketplace => A grocery delivery app => A subscription service You need to be able to answer: > Where did this money come from? > Where did it go? > Who owns it right now? > Why did this balance change? > Can we prove it months or years later? A ledger provides an immutable audit trail, complete traceability, and financial correctness. It eliminates balance drift, simplifies reconciliation, and gives your team confidence when investigating disputes or anomalies. You don't need to hold funds to need a ledger. The moment your system represents value, tracks balances, calculates fees, records payouts, or reports financial activity, you're already dealing with accounting. Design for auditability from day one. Retrofitting a ledger later is one of the most expensive engineering decisions you'll make.

1

122

Cover image for I’ve been building SabiFlow for

I’ve been building SabiFlow for a while, and honestly, the most interesting part of the project isn’t the code. It's the problem. Because it's personal. I've experienced that thing where money comes in and somehow, without you really noticing, it starts disappearing. Not because you don’t earn enough. Not necessarily because you're irresponsible either. Sometimes money simply has no job when it arrives. And as an engineer, that got me thinking: What if the problem isn't budgeting? What if the problem is that we’re asking people to make too many good decisions at the exact moment they have the most temptation to make bad ones? That question became the foundation for SabiFlow. Instead of telling someone, "You should save 20% of your income," I started thinking about what would happen if the system simply helped assign every inflow a purpose the moment it arrived. That led me down a rabbit hole. Funnels. Automated distribution. Wallet infrastructure. Virtual accounts. User behaviour. Transaction flows. KYC. Compliance. Even the psychology behind notifications. And this is probably my favourite part of being both an engineer and a founder. I don’t just ask: "How do I build this feature?" I ask: "Why does this problem exist, and what kind of system could make dealing with it easier?" Then the engineer in me comes along and asks: "Okay… but how do we actually make this work reliably?" 😂 That tension between the founder thinking about the problem and the CTO thinking about the system is probably what I enjoy most about building SabiFlow. I’m still figuring a lot of it out. But I'm curious: What’s a problem you’ve experienced personally that eventually made you want to build something around it?

0

1

Cover image for One of the most expensive

One of the most expensive lessons I learned building fintech products wasn't about APIs, infrastructure, or scaling. It was about data types. Years ago, while building a bill payment startup, I discovered we had silently lost over ₦3 million to fractional rounding issues. No hacks. No fraud. Just floating-point arithmetic doing exactly what it was designed to do. The Facts In JavaScript, numbers are stored as floating-point values. That means something as simple as: 0.1 + 0.2 doesn't equal 0.3. It equals: 0.30000000000000004 For a shopping cart, that tiny difference may not matter. For a fintech system processing thousands of transactions daily, those tiny fractions accumulate into real money. What I Initially Did Like many developers, I used decimal currency values directly: It looked clean. But calculations, fee deductions, settlements, and balance updates gradually introduced rounding inconsistencies. Over time, the system started leaking funds through fractions. What Fixed It I switched to storing monetary values in the currency's smallest unit using BigInt. Instead of: Store: Now every operation becomes integer math. No hidden fractions. No rounding surprises. No disappearing money. Pros - Precise calculations - Predictable accounting - Easier reconciliation - Safer ledger systems Cons - Requires conversion when displaying values - Slightly more discipline from developers - BigInt cannot be mixed directly with Number types Do's > Store money in the smallest currency unit (Kobo, Cents, etc.) > Use BigInt or dedicated decimal libraries where appropriate > Convert only at the presentation layer > Build your ledger around integer arithmetic > Never convert BigInt to number on runtime to perform arithmetic operation. Perform the arithmetic operation on the BigInt Type. You can build an api transformer layer to return response in the integer form or leave value in the smallest unit while frontend do the conversion by dividing the value by 100. Don'ts X Store money as floating-point values X Compare currency values using decimal calculations X Round repeatedly during transaction processing X Assume tiny fractions won't matter Fun Fact This is the same principle used by companies like Stripe. Amounts are represented in the smallest currency unit (such as cents) rather than floating-point dollars. Wrap Up In fintech, every fraction belongs to someone. If your system cannot account for every smallest unit of currency, eventually those fractions become real losses. The best time to fix monetary precision is before your first transaction. The second-best time is today.

0

29

Software Engineer(2)

Software engineer building intelligent systems

New to Contra

Software engineer building intelligent systems

Cover image for Internet of Things

Internet of Things

0

10

Cover image for Technology has always been where

Technology has always been where my passion lies. Although I spent the past year working outside the tech industry, the experience reminded me that my true passion is building technology that solves real-world problems. Today, I'm excited to fully recommit to my journey as a software developer. My experience includes: 💻 Web Development 📱 Flutter Mobile Development 🤖 AI Applications 🧠 Data Analysis, Machine Learning & Deep Learning Some of the projects I've built include: • AI Email Response Generator • Traffic Sign Recognition System • Child Tracking System (Flutter, Firebase, GPS & IoT) • Responsive web applications I'm currently open to software development, AI, and mobile development opportunities where I can contribute, learn, and grow. If you're hiring or know of any opportunities, I'd love to connect. 🚀 Explore my portfolio: My Portfolio Website (https://ekumachidinma.netlify.app/)

1

206

Cover image for Mobile App Development

Mobile App Development

0

9

Cover image for Presenting to you, my website

Presenting to you, my website portfolio. Click on this link Chidinma's Porfolio (http://ekumachidinma.netlify.app) and get to know more about me.

0

49

Software Engineer(3)

Conceptual engineer defining technologies shaping reality.

New to Contra

Conceptual engineer defining technologies shaping reality.

Cover image for *Simulants.

0

1

Cover image for *AI - AI.

0

4

Cover image for *Artifacts & Accouters

*Artifacts & Accouters

0

2

Cover image for *the Metaverse is a Medium.

*the Metaverse is a Medium.

0

1

Software Engineer(4)

Abdulmutalib Jamiu

Innovative Software Engineer Specializing in Scalable Soluti

Innovative Software Engineer Specializing in Scalable Soluti

Cover image for RAIM Subsystems

RAIM Subsystems

0

9

Cover image for KadMap Client

0

8

Cover image for Emmycares Data Enterprise

Emmycares Data Enterprise

0

6

Placeholder project card media

View more →

Software Engineer(2)

Replit App Design | Brands, Websites and Full-Stack Web Apps

New to Contra

Replit App Design | Brands, Websites and Full-Stack Web Apps

Cover image for AI-Powered Financial Analysis Platform Development

AI-Powered Financial Analysis Platform Development

4

8

Cover image for Beezy Mobile Scheduling App Development

Beezy Mobile Scheduling App Development

4

9

Cover image for TrustedRV Marketplace MVP Enhancement

TrustedRV Marketplace MVP Enhancement

4

7

Cover image for Startup Networking Platform Development

Startup Networking Platform Development

4

8

Software Engineer(1)

Lannister always pays their debt

Lannister always pays their debt

Cover image for Test

0

5

Cover image for Test

0

5

Cover image for Payment Gateway

Payment Gateway

0

5

Placeholder project card media

View more →

Software Engineer(3)