Open to full-time, freelance, or project-based work

Open to full-time, freelance, or

project-based work

I help product teams turn complex workflows into clear interfaces people trust and use.

I bring clarity to chaos. For 5+ years, my work has been centered around reducing friction, driving outcomes, and making the experience make sense.

Book a free intro call →

Years Exp

Discover to Delivery

UX / Product Design

Software Eng. • AI Workflows

TECHNICAL FOUNDATION

Where I create value

I help teams turn rough product thinking into clear, usable, buildable experiences.

I’m good at making sense of messy situations

I’ve worked across freelance projects, aviation products, admin tools, dashboards, and internal systems where the brief was not always perfectly defined. I’m comfortable asking questions, finding the real problem, and turning scattered input into a clearer direction.

I understand enough technical logic to design responsibly

My software engineering background helps me think beyond the surface of a screen. I consider how flows behave, what happens in different states, where edge cases might appear, and how designs can be handed over without creating unnecessary confusion.

I can move between strategy and execution

I can discuss user needs, product goals, and business constraints, then turn that into wireframes, prototypes, UI decisions, and developer-ready handoff. I’m not only useful at the beginning of a project or the end — I can help connect the middle.

I work well where teams need alignment

A lot of my value comes from helping product, design, business, and engineering get on the same page. Whether through workshops, reviews, prototypes, or simple documentation, I try to make decisions clearer and easier to act on.

Selected Case Studies

Strategic Work

A selection of complex systems translated into clear interfaces.

Operational UX for a mobility-as-a-service platform

Streamlining Car Rental Station Operations: Designing Role-Specific Tools for Agents and Managers

Context

roadsurfer runs 200+ rental stations across Europe. Station agents and managers were operating from the same undifferentiated internal tool. During peak periods, this created cognitive overload, unclear ownership, and missed handoffs.

The Bottleneck

A single shared interface forced two fundamentally different user types — agents executing ground-level tasks and managers overseeing station-wide operations — into the same workflow, creating ambiguity about who acts on what, and when.

Strategic Decisions

Role-based interface split

Permission-aware UI with contextual tooltips

Guided, multi-step reservation flow

Measurable Impact

Reduced task ambiguity and faster completion rates for agents on core workflows

Improved manager decision-making speed through consolidated station KPI visibility

Lower error rate in reservation creation via the guided confirmation flow

View case study

AdTech UX

Empowering Airlines to Optimize Ad Campaigns and Boost Passenger Engagement

Context

Airlines were managing in-flight ad campaigns across fragmented, disconnected tools. IFE managers and advertising partners were operating blind mid-campaign, unable to adjust strategy on the fly.

The Bottleneck

Campaign setup was slow, targeting was imprecise, and performance data arrived too late to act on. The fragmented toolset forced users across multiple platforms to accomplish what should be a single workflow.

Strategic Decisions

Dashboard-first information architecture

Iterated twice on both the overview and insights views

Scoped aggressively for MVP

Measurable Impact

Campaign setup time dropped from 45 minutes to under 20 minutes — a 55% reduction

50% improvement in user efficiency

Significant reduction in errors during campaign configuration

View case study

Data visualisation and analytics UX

Empowering airline teams to uncover passenger sentiment trends and drive smarter decisions with clarity and speed

Context

Airlines were sitting on thousands of passenger survey responses but couldn't operationalise them: data lived in spreadsheets and slide decks, NPS drops were unexplainable without hours of manual analysis.

The Bottleneck

Insight discovery required hours of manual work across fragmented tools, which meant decisions were delayed and cross-team alignment was poor.

Strategic Decisions

Two-layer information architecture (Overview / Deep Dive)

Global vs. local filter distinction

Deliberate visualisation selection per data type

Measurable Impact

Insight discovery time dropped from hours to under 5 minutes

Improved executive clarity and actionability.

Standardised survey analysis across stakeholders.

View case study

Mobile APp

Empowering Financial Literacy in Nigeria through Digital Innovation

Context

Empowering users to manage their finances and foster long-term financial well-being

The Bottleneck

Many individuals manage digital transactions daily but lack the knowledge to optimize their financial well-being.

Strategic Decisions

Categorized spending in real time

Visualized savings goals tied to income

Surfaced contextual financial advice within the interface

Measurable Impact

Simplified financial management with intuitive tools that integrate education into everyday financial activities.

Guided users toward better financial literacy and long-term financial health.

Promoted comprehensive financial understanding

View case study

System Architecture

Design Systems at Scale

The Fragmentation Problem

Three disparate product teams. Inconsistent components. Duplicate frontend logic. A fragmented user experience across the airline analytics suite.

The Tokenized Solution

Figma Variables

Source of Truth

JSON Tokens

Automated Sync

React Components

Storybook

Cross-Product UI

Unified Experience

Outcomes

100% Component Parity

Zero-Drift Handoff

30% Faster Shipping

ENG

Unified Language

Across 3 Disciplines

View case study

Process

How I De-risk Product Decisions

I don't just "do design." I facilitate a structured process that moves from ambiguity to shipped software with minimal waste.

Clarify the Decision

What critical choice does the user need to make? I start by defining the core decision loop, not the feature list.

Structure the System

I map data objects, relationships, and states before drawing a single screen. Logic first, pixels second.

Validate with Signal

I test prototypes with real data and complex scenarios to ensure the system holds up under pressure.

Align & Ship

I hand off tokenised specs and work side-by-side with engineers to ensure the build matches the intent.

Testimonials

Kind words from amazing people

"Charles consistently stood out for his dedication, sharp analytical skills, and creative problem-solving. His commitment to collaboration fostered an inclusive work environment, and he consistently delivered high-quality results under tight deadlines. His positive attitude and reliability made even stressful projects enjoyable. Charles is a true asset and a pleasure to work with."
Talita Meier, Advanced UI/UX Designer
LinkedIn Profile
"Charles is a dedicated, curious, and ambitious designer. During our four months working together, he showed adaptability, hard work, and skill. His proactive attitude and effective use of feedback stood out. Charles cares deeply about his work and stays focused on his goals. I am confident he will go far."
Teresa Mira, Senior Product Designer
LinkedIn Profile
“Charles significantly improved both the desktop and mobile versions of my website, creating a unique and personalized design that reflects my personality and business content. He exceeded my expectations by incorporating my wishes with expert UX principles and accessibility considerations. The result is a stunning website that has received numerous compliments.”
Simone Martin - Psychological counselor & life coach for self-determination
Website
"Collaboration with Charles uplifted data analysis to a different level. His systematic approach made data understandable for different audiences. Moreover, by incorporating different buttons and visualization for filtering, the dashboards became one of the coolest product in our platform."
Hanna Kim, Data Analyst
LinkedIn Profile

"Charles consistently stood out for his dedication, sharp analytical skills, and creative problem-solving. His commitment to collaboration fostered an inclusive work environment, and he consistently delivered high-quality results under tight deadlines. His positive attitude and reliability made even stressful projects enjoyable. Charles is a true asset and a pleasure to work with."
Talita Meier, Advanced UI/UX Designer
LinkedIn Profile
"Charles is a dedicated, curious, and ambitious designer. During our four months working together, he showed adaptability, hard work, and skill. His proactive attitude and effective use of feedback stood out. Charles cares deeply about his work and stays focused on his goals. I am confident he will go far."
Teresa Mira, Senior Product Designer
LinkedIn Profile
“Charles significantly improved both the desktop and mobile versions of my website, creating a unique and personalized design that reflects my personality and business content. He exceeded my expectations by incorporating my wishes with expert UX principles and accessibility considerations. The result is a stunning website that has received numerous compliments.”
Simone Martin - Psychological counselor & life coach for self-determination
Website
"Collaboration with Charles uplifted data analysis to a different level. His systematic approach made data understandable for different audiences. Moreover, by incorporating different buttons and visualization for filtering, the dashboards became one of the coolest product in our platform."
Hanna Kim, Data Analyst
LinkedIn Profile

I help teams move from rough ideas to clear, buildable product decisions.

I’m useful where product thinking, UX, business needs, and technical constraints need to come together, whether that means shaping a new feature, improving an existing workflow, or helping a team make clearer decisions.

Book a free intro call →

LinkedIn Profile →

charlesjaja.dny@gmail.com

2026 Charles Jaja

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