Description
**About the opportunity**
We are launching a new strategic project focused on modernizing legacy systems for a major fuel station and convenience store chain.
We are seeking a senior developer with experience in Delphi, .NET, and Node.js to work in a technological transformation environment, contributing both to the maintenance and evolution of critical business systems.
The role requires autonomy, analytical capability, and hands-on experience in modernizing legacy applications.
**Responsibilities and duties** **Responsibilities**
* Maintain and evolve legacy systems developed in Delphi;
* Develop new solutions and integrations using .NET and Node.js;
* Participate in technological modernization initiatives and architectural evolution;
* Design and maintain APIs and system integrations;
* Support technical decisions related to application migration and evolution;
* Collaborate with technical teams and business areas.
**Requirements and qualifications** **Requirements**
* Solid experience with Delphi;
* Experience with .NET/C\#;
* Knowledge of Node.js;
* Experience with legacy systems and technological modernization;
* Experience with REST APIs and integrations;
* Knowledge of relational databases;
* Senior profile with technical autonomy and strong communication skills.
**Preferred qualifications**
* Experience in system modernization/migration projects;
* Experience in retail, fuel stations, or convenience store environments;
* Knowledge of microservices architecture;
* Cloud experience.
**Behavioral profile**
* Analytical and problem-solving oriented
* Strong communication skills within multidisciplinary teams
* Proactivity and ownership mindset
* Ability to operate effectively in a dynamic and evolving environment
**Additional information**
**Additional information**
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**Why Sciensa?**
* An environment balancing **autonomy and governance**.
* Real and meaningful technical challenges.
* Space to influence architecture and technical decisions.
* Close collaboration with business units, delivering direct impact.
**Important:**
Engagement model: PJ (Hourly rate).
Working hours: 8 hours per day
Work model: 100% remote
Equipment: Provided by Sciensa, as required by the area/project.
**Sciensa** is a leading Brazilian InfraTech company specializing in digital infrastructure for the financial sector. We deliver solutions across APIs \& integrations, Cloud, Data \& AI, Cybersecurity, and custom-built platforms. For over 15 years, we have delivered innovation, robustness, and efficiency to clients requiring secure, scalable, and high-performance operations.
#### **Our purpose \& culture**
**Why we exist:** To ensure financial institutions can grow with reliable, secure, and innovative technology.
**How we do it:** Through collaborative teams, autonomy, continuous learning, and a focus on tangible results.
**Values guiding our daily work:** Innovation, technical excellence, security, ownership, transparency.
#### **Our values and differentiators**
**Technical excellence and security** across every layer of the digital ecosystem.
**Continuous innovation:** We consistently adopt best practices, emerging technologies, and proactively respond to market needs.
**Impact focus:** For us, delivering a system is not enough—we aim for value generation, efficiency, scalability, and trust.
**Collaboration and ownership:** We value autonomous teams where each professional meaningfully contributes to decisions, company growth, and client success.
#### ******What it means to work here**
**High-impact projects:** You will work on solutions affecting millions of users, critical systems, data governance, and security.
**Recognition and autonomy:** You take ownership, participate in technical decisions, and see your contributions deliver real value to clients and the company.
**Diverse and collaborative team:** People from diverse backgrounds, knowledge sharing, team spirit, and appreciation for those who share, innovate, and grow.