9SXP9U Senior Full Stack .NET Developer (inglês avançado)

Insi; Brazil; Remote; BRL 180,000 - 240,000; Full time

Job summary

Insi seeks an experienced Lead Full Stack .NET Developer to drive enterprise application development and modernization within a nearshore Brazil team. You will combine hands-on coding with technical leadership across multiple projects, designing, integrating, and advancing architecture to meet business needs.

The ideal candidate has extensive full-stack experience, API integration, and a track record of guiding developers through complex challenges.

Qualifications

• Bachelor's degree in Computer Science or related field preferred.
• Minimum 5 years of professional software development experience.
• Strong hands-on full-stack development with APIs and integrations.
• Experience leading technical solutions and mentoring developers.

Responsibilities

• Lead design, development, testing, and support of enterprise applications across multiple projects.
• Analyze requirements and translate into scalable, maintainable software solutions.
• Evaluate architecture, dependencies, and integration needs to select optimal tech.
• Develop and maintain integrations between apps, platforms, databases, and external systems.
• Provide technical leadership, review solutions, and mentor developers.
• Gather technical requirements, data flows, and integration processes.

Skills

Lead multi-projects

Full stack dev

APIs & integrations

Team mentoring

Education

Bachelor's degree in Computer Science or related

Tools

ASP.NET

Angular 11+

Entity Framework

SQL/Oracle

Web API/REST

Git/TFS

Postman

Jenkins

Docker

SSIS/SSRS

ODI

Job description

Remote

Public Job

Job Summary

We are seeking an experienced Lead Full Stack .NET Developer to support enterprise application development, integration, and modernization initiatives within a nearshore technology team in Brazil.

This individual will combine strong hands‑on development expertise with technical leadership responsibilities across multiple projects. The role involves designing and developing enterprise applications, leading integration initiatives, resolving complex technical challenges, and contributing to technology and architecture decisions.

The ideal candidate is a highly analytical and solution‑oriented professional with extensive experience in full‑stack development, system integrations, APIs, and enterprise applications.

Essential Duties and Responsibilities

• Lead the design, development, testing, implementation, and support of enterprise applications across multiple projects.
• Analyze complex business and technical requirements and translate them into scalable, maintainable software solutions.
• Evaluate application architecture, dependencies, system interactions, and integration requirements to determine appropriate technical solutions.
• Develop and maintain integrations between applications, platforms, databases, and external systems, including APIs and web services.
• Lead technical initiatives by providing guidance, reviewing solutions, and supporting developers in resolving complex programming and integration challenges.
• Gather and document technical requirements, application flows, data flows, system dependencies, and integration processes.
• Participate in application testing, validation, deployment, troubleshooting, and production support, including reviewing test results and supporting issue resolution.
• Evaluate opportunities to reuse, enhance, and modernize existing code and applications.
• Assess emerging technologies, tools, and development methodologies and recommend improvements when appropriate.
• Collaborate with business stakeholders, architects, developers, QA teams, and other technology professionals to deliver effective solutions.
• Maintain current knowledge of development technologies, frameworks, tools, and software engineering best practices.
• Perform other duties and responsibilities as assigned.

Required Technical Skills

• ASP.NET
• Angular 11+
• Entity Framework
• SQL Server and/or Oracle
• Web API / REST APIs
• Git / TFS
• Postman
• Jenkins
• Docker
• SSIS / SSRS
• ODI

Desired Skills

• BMC Scheduling
• Java
• Experience with enterprise application modernization
• Experience with APIs and distributed applications
• Experience with relational databases and data integration technologies
• Experience supporting applications across development, testing, deployment, and production environments
• Experience working in Agile development environments
• Experience working with distributed or international technology teams

Education and Experience

• Bachelor’s degree in Computer Science, Information Technology, Software Engineering, MIS, or a related field preferred.
• Minimum of 5 years of relevant professional software development experience, or an equivalent combination of education, training, and experience.
• Strong hands‑on experience with full‑stack application development.
• Demonstrated experience working with complex enterprise applications, integrations, and APIs.
• Experience taking ownership of technical solutions and independently resolving complex development challenges.
• Previous experience as a Technical Lead, Development Lead, Senior Developer, or similar role with technical leadership responsibilities.
• Strong analytical, problem‑solving, communication, and collaboration skills.

Preferred Experience

• Experience with financial, accounting, ERP, or other business‑critical enterprise applications.
• Experience with accounting systems or General Ledger applications is a plus.
• Experience leading development initiatives across multiple projects.
• Experience modernizing legacy applications and integrating them with newer technologies.
• Experience mentoring developers and providing technical direction.
• Experience in a nearshore or international delivery environment.

Insi is a consultancy specializing in digital evolution, acting as a strategic partner to organizations on their transformation journey and connecting diagnosis, strategy, and execution to deliver tangible results. With a global presence, more than 2,700 employees across 27 countries, and over 200 clients, the company helps businesses identify opportunities, advance their digital maturity, and implement solutions that drive efficiency, growth, and competitiveness. Drawing on deep expertise in applied artificial intelligence, Insi runs projects end to end, from assessing scenarios and shaping strategy to delivering solutions powered by intelligent agents. Its service ecosystem puts AI to work to raise productivity, lower costs, and accelerate value creation, combining advanced technology, business fluency, and a human‑centered approach that turns complex challenges into measurable results.