Fullstack Engineer

Yes Energy delivers real-time electric power market data and trading decision solutions. The company is seeking a Full Stack Engineer with a strong back-end focus to build and scale an energy market platform, developing services for settlement processing, bid submission, market workflows, and platform APIs while contributing to front-end development and AI-assisted engineering practices.

Responsibilities

Design, build, and maintain back-end services using C#/.NET

Develop APIs supporting bid submission, settlement processing, and market workflows

Build reliable integrations between platform components

Design and optimize SQL Server databases and queries

Contribute to front-end functionality using JavaScript when needed

Write automated tests and participate in code reviews

Diagnose and resolve production issues

Collaborate with Product, QA, and other engineering teams to deliver customer-facing capabilities

Use AI-assisted engineering tools to improve development efficiency and code quality

Preferred

Experience building SaaS platforms

Experience with cloud-based applications

Experience in wholesale energy markets or financial transaction systems

Experience using AI-assisted development tools

SaaS Platform Development

Cloud-Based Applications

Wholesale Energy Markets

Financial Transaction Systems

AI-Assisted Development Tools

Benefits

Real bonuses that are achievable and that you can impact

Medical insurance

401(k) Plan with matching

Flexible vacation

Flexible work schedules

Yes Energy encourages and funds investment in both formal and informal professional development

Hybrid work arrangement in Boulder, CO, with 2 days in the office

Company

Electricity and natural gas retailer

Covilhã, Castelo Branco, PRT

https://www.yesenergy.pt/

Founded in 2011

11-50 employees

Qualifications

3+ years of software engineering experience

Strong C#/.NET development skills

Experience building REST APIs and distributed services

Strong SQL Server and database design experience

Working knowledge of JavaScript

Experience working across the software development lifecycle

Strong debugging and problem-solving skills

Experience building SaaS platforms

Experience with cloud-based applications

Experience in wholesale energy markets or financial transaction systems

Experience using AI-assisted development tools

3+ years of software engineering experience.

Required skills

C#/.NET, REST APIs, Distributed Services, SQL Server, Database Design, JavaScript, Software Development Lifecycle, SaaS Platforms, Cloud-Based Applications, Wholesale Energy Markets, Financial Transaction Systems, AI-Assisted Development Tools

Preferred skills

Experience building SaaS platforms, Experience with cloud-based applications, Experience using AI-assisted development tools

Experience

3+ years