Next Fit Tech Stack

Fitness business management platform serving 15,000+ gyms and studios across Brazil

Software Development Criciúma, Santa Catarina 201–500 employees Founded 2019 Privately Held

Next Fit operates Brazil's largest SaaS ecosystem for fitness and sports businesses, with a dual-platform architecture (web + mobile) built on C#/.NET and React/React Native. The tech stack reveals a production-grade operation: PostgreSQL and MongoDB for persistence, RabbitMQ for async work, Redis for caching, plus Kubernetes and Docker for container orchestration on AWS. Current project focus—design system expansion, front-end/back-end architecture evolution, and A/B testing—signals infrastructure maturation alongside conversion optimization, while pain points around churn prevention and customer dissatisfaction suggest product-market fit challenges at scale.

Tech Stack 39 technologies

Core StackFigma Adobe Illustrator C# RabbitMQ Redis PostgreSQL MongoDB Azure DevOps Docker Kubernetes ArgoCD Rancher AWS Grafana Angular React React Native Google Ads Meta Ads Excel eSocial Photoshop Notion Azure Boards NET Core .NET Framework Application Insights Google Meta YouTube+9 more

What Next Fit Is Building

◆Challenges

Preventing customer churn
Identifying dissatisfaction signals
Performance bottlenecks
Reducing operational costs
Accelerating results
Improving dp processes
Improving sales performance
Quality and productivity improvement
Campaign bottlenecks and inefficiencies
Process standardization and documentation

▲Active Projects

Standardization across web, mobile, and design system
Meta ads creative development
Design system expansion
A/b testing implementation
Front-end and mobile architecture evolution
Back-end architecture evolution for next fit platform
Cro optimization projects
Instagram post creation
Onboarding and offboarding implementation
Construction and improvement of hr subsystems

Hiring Activity

Steady35 roles · 15 in 30d

Department

Support

Engineering

Product

Sales

Marketing

Design

Finance

Seniority

Mid

Junior

Senior

Lead

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About Next Fit

Next Fit provides software and mobile applications for gym, studio, and CrossFit box operators in Brazil. Founded in 2019, the company serves over 15,000 fitness businesses, positioning itself as the market's largest dedicated fitness SaaS platform. The platform handles core business operations—membership management, scheduling, billing—alongside mobile apps for end-user engagement. Headquartered in Criciúma, Santa Catarina, Next Fit operates a 200+ person team with balanced hiring across support, engineering, product, and marketing functions, indicating a transition from pure product-led to sales-supported growth.

HeadquartersCriciúma, Santa Catarina

Company Size201–500 employees

Founded2019

Hiring MarketsBrazil

Frequently Asked Questions

What tech stack does Next Fit use?

Backend: C#, .NET Core, .NET Framework, RabbitMQ, Redis, PostgreSQL, MongoDB. Infrastructure: AWS, Docker, Kubernetes, ArgoCD, Rancher. Frontend: Angular, React, React Native. Monitoring: Application Insights, Grafana.

How many customers does Next Fit have?

Next Fit serves over 15,000 fitness businesses (gyms, studios, and CrossFit boxes) in Brazil, making it the largest ecosystem of its kind in the country.

Is Next Fit currently hiring?

Yes, 37 active roles across support (10), engineering (7), product (5), sales (5), marketing (4), design (2), finance (2), and HR (2). All positions are based in Brazil.