Senior Full-Stack & Cloud Engineer

Sef Energy Careers; Oklahoma City (OK); On-site; USD 120,000 - 160,000; Full time

Job summary

SEF Energy is seeking a seasoned Full Stack Developer IV to design, build, and maintain advanced web apps and cloud infrastructure supporting IT operations and digital transformation.

You will integrate APIs, manage databases, and implement real-time data pipelines with MQTT for operational monitoring, while contributing to security hardening and CI/CD automation. Expect occasional travel and on-call responsibilities.

Qualifications

• 8+ years of progressive full-stack development experience across front-end, back-end, database and cloud infra.
• Proficiency in JavaScript/TypeScript, Python, and SQL.
• Experience with React or similar frontend frameworks and Node.js.
• Working knowledge of Azure and/or AWS cloud platforms.
• Relational databases such as PostgreSQL and SQL Server.
• Strong problem-solving and ability to work independently.
• Effective communication and self-motivation.
• Use of MQTT, IoT protocols or real-time data streaming.
• Familiarity with Docker and Kubernetes.
• Experience with Microsoft Graph API and Office 365 integrations.
• Knowledge of workflow automation tools like n8n.
• Oil and gas or industrial IT experience.

Responsibilities

• Design, develop, and maintain full stack web applications (React, Next.js, Python).
• Build and maintain cloud infrastructure on Azure and AWS including VMs, networking, containers, and deployments.
• Develop and integrate APIs and middleware connecting ERP, email, calendar, with custom apps.
• Implement MQTT broker, real-time data pipelines, and IoT integrations for ops monitoring.
• Design and manage databases (PostgreSQL, SQL Server) including schema design and migrations.
• Build and maintain CI/CD pipelines and DevOps workflows for automated testing and deployment.
• Develop workflow automation integrations (n8n, webhooks, schedules) to streamline processes.
• Collaborate with IT on security hardening and IAM, plus infrastructure monitoring.
• Provide technical documentation and knowledge transfer for systems, APIs, and procedures.
• Troubleshoot production issues across app and infra, including on-call support.

Skills

JavaScript/TypeScript

Python

SQL

React

Node.js

Azure/AWS

PostgreSQL/SQL Server

Docker/Kubernetes

MQTT/IoT data streams

Security hardening

Documentation

On-call support

Education

Bachelor's degree in computer science or software engineering

Cloud certifications (Azure or AWS)

Tools

Docker

Kubernetes

Microsoft Graph API

Office 365 integrations

n8n

Job description

SEF Energy is seeking a seasoned Full Stack Developer IV to design, build, and maintain advanced web apps and cloud infrastructure supporting IT operations and digital transformation.

You will integrate APIs, manage databases, and implement real-time data pipelines with MQTT for operational monitoring, while contributing to security hardening and CI/CD automation. Expect occasional travel and on-call responsibilities.