← Back to SeanPlumridge.com

Featured platform

Sports Performance Platform

A connected performance system for coaches, athletes, teams, and organizations.

SPP brings athlete development, training delivery, readiness, performance data, communication, and coaching workflows into one connected product system.

Full-Stack Developer & FounderWeb · mobile · backend · data · product architecture

Sports Performance Platform Player Portal visual featuring athlete development and a runner

Product thesis

Performance data is only useful when it changes the next decision.

SPP turns fragmented athlete information into clear operational context for coaches and useful daily guidance for athletes—connecting the information that matters without burying people in dashboards.

One platform. Two experiences.

Coordinated surfaces for the people doing the work.

Coach

Operational control across programming, teams, readiness, athlete development, performance intelligence, and communication.

Player

A smartphone-first workspace for training execution, readiness, progress, objectives, testing, and coach communication.

Sports Performance Platform coach Command Center showing roster, availability, readiness, attention signals, and training
Coach Portal calendar showing training, testing, rest days, and team planning

Coach operations

Operational control without losing athlete context.

Coaches can move from organization state to teams, athletes, training, readiness, attention signals, and scheduling without treating each athlete as an isolated profile.

Planning and review stay grounded in the current operational timeline and the people it affects.

Athlete & roster intelligence

Every athlete in context.

Roster views make current training state, assignment coverage, completion history, availability, workload, and athlete-level actions visible alongside team and organization context.

That gives coaches a practical way to recognize where attention is needed without losing sight of the wider program.

Coach Portal roster with athlete training state, assignment coverage, and coach actions

Performance intelligence

From performance data to decisions.

Configurable reporting brings readiness patterns, program progression, testing, benchmarking, and longitudinal review into a useful coaching context.

SPP is designed to surface evidence that supports review and action—not merely store data.

Coach Portal reports for readiness, program progression, testing, and athlete benchmarking

Athlete experience

Built around how athletes actually use software.

The Player experience puts today’s training, development focus, program progression, readiness, testing, and coach communication into a focused smartphone-first workspace.

Training and communication sit together, so athletes can act on direction without moving between disconnected tools.

Player Portal mobile training screen showing current program, progress, testing, and readiness
Player Portal mobile messaging screen for coach and athlete communication

Product architecture

Architecture & engineering.

SPP is a multi-tenant software system spanning a React / TypeScript Coach Portal, a React Native / Expo Player experience, and shared NestJS APIs with Prisma / MySQL data models.

Coach Portal

React · TypeScript · Vite · responsive application workflows

Player experience

React Native · Expo · smartphone-first athlete workflows

Backend & data

NestJS · REST APIs · Prisma · MySQL · relational data modelling

Application architecture

Multi-tenant boundaries, permissions, modular architecture, Git-based development, testing, debugging, performance, and accessibility.

Product leadership

Built from product thesis to implementation.

Full-Stack Developer & Founder

My work spans product strategy, roadmap, information architecture, UX/UI direction, system architecture, full-stack implementation, testing, product iteration, platform positioning, and partnership groundwork.

ProductThesis, roadmap, positioning ExperienceInformation architecture, UX/UI EngineeringSystems, implementation, quality ScaleIteration, partnerships, go-to-market groundwork

SPP is designed around a simple principle: performance systems should reduce uncertainty, connect people to the right context, and make the next decision clearer.