# Strong Middle/Senior Full-Stack Engineer

**Empresa:** Sigma Software
**Local:** São Paulo, SP
**Modalidade:** Remoto
**Contrato:** CLT
**Publicada em:** 2026-09-23

## Descrição

Design, develop, and maintain end-to-end product features across Back-end and Front-end systems
Build scalable services, APIs, and workflow-driven solutions supporting core business operations
Collaborate closely with Product, Design, and Engineering teams to define requirements and shape product direction
Translate operational and business processes into intuitive and scalable software experiences
Participate in architecture discussions, technical planning, and code reviews
Own features throughout the full development lifecycle from discovery to deployment
Evaluate technical decisions from both engineering and user-impact perspectives
Improve product quality, scalability, developer experience, and operational efficiency
Work effectively in a startup environment with evolving priorities and changing requirements
Contribute proactively to technical and product discussions and suggest improvements when needed
Qualificações

At least 5 years of commercial software engineering experience
Strong proficiency in TypeScript with solid Back-end development expertise
Experience designing and delivering production-ready product features end-to-end
Strong experience with relational databases, preferably PostgreSQL
Experience developing scalable services and APIs
Experience working with AWS cloud services
Understanding of modern software architecture and engineering best practices
Ability to work independently and take ownership of technical solutions
Strong problem-solving skills and ability to work with ambiguity
Excellent communication and collaboration skills
Product-minded approach to software development
Upper-Intermediate English level or higher
Experience participating in code reviews and technical discussions
Ability to balance technical quality with business and user needs
WILL BE A PLUS

Experience with NestJS
Experience with Next.js and React
Experience with Temporal or other workflow orchestration platforms
Experience working in startup or high-growth product environments
Experience in fintech products or platforms
Background in payment systems, billing, invoicing, or transaction-focused products
Informações adicionais
PERSONAL PROFILE

Proactive and ownership-driven mindset
Comfortable working in environments with changing priorities and evolving requirements
Strong collaboration and communication skills
Ability to understand business context beyond implementation details
User- and product-oriented approach to decision-making
Self-sufficient and adaptable team player
Join a fast-growing fintech product where engineering decisions directly shape business operations and user experience. We are looking for a Strong Middle/Senior Full-Stack Engineer with a Back-end focus to help build scalable onboarding and workflow automation solutions for modern businesses.
This is a fully remote opportunity for specialists located in LATAM who enjoy solving ambiguous challenges, taking ownership of features end-to-end, and collaborating closely with Product and Design teams in a startup-like environment.
We at Sigma Software value engineers who think beyond implementation details and actively contribute to product evolution. Here, you will have the opportunity to influence architecture decisions, improve operational workflows, and work on meaningful customer-facing functionality with a high level of autonomy.
CUSTOMER
Our Customer is a fast-growing fintech startup transforming how businesses manage financial and operational workflows. The company develops scalable digital products that replace fragmented and manual operational processes with automated and intuitive experiences. Working in a fast-paced environment, the team combines strong product ownership with rapid iteration and close collaboration across Engineering, Product, and Design.
PROJECT
You will join the  Team responsible for building scalable onboarding experiences and workflow-driven functionality integrated into the core product platform. The team focuses on replacing internal tools and manual operations with customer-facing solutions that improve operational efficiency and user experience.
A significant part of the role involves understanding complex business processes, evaluating existing workflows, and translating them into scalable product functionality while balancing technical quality, usability, and business impact.

## Habilidades

- TypeScript
- Back-end development
- AWS
- relational databases
- APIs

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