👨🏻‍💻 postech.work

Senior Full Stack Developer (SDE-3) - IS Category

Weekday AI (YC W21) • 🌐 In Person

In Person Posted 3 days, 6 hours ago

Job Description

This role is for one of the Weekday's clients

Min Experience: 5 years

JobType: full-time

This role focuses on designing, building, and scaling internal platforms, shared services, and core architecture that enhance developer productivity, elevate system performance, and strengthen overall engineering efficiency. As part of the internal systems team, you will create reusable components, centralized services, and internal tools that help streamline workflows across the engineering organization. You will work across the full stack—backend services, frontend dashboards, microservices, and cloud environments—while shaping technical standards and driving platform evolution.

Requirements

*Key Responsibilities*

Platform \& Architecture Development

Design and implement backend services, APIs, and shared components

Build internal platforms that support deployments, CI/CD, analytics, and developer workflows

Enhance performance, reliability, and security of internal systems

Full-Stack Development

Develop internal dashboards and UI tools using modern frontend frameworks

Build backend microservices based on the chosen technology stack

Manage development from design to deployment

Engineering Standards

Define coding and architecture best practices

Review code and mentor junior engineers

Optimize databases, caching, and system performance

Internal Collaboration

Work with SRE, product, QA, and DevOps teams to gather requirements

Build internal tools to streamline workflows and processes

Improve efficiency through automation and reusable frameworks

Problem-Solving \& Innovation

Identify bottlenecks and design scalable solutions

Lead modernization and refactoring initiatives

Explore new technologies to enhance platform capabilities

What Makes You a Great Fit

5-8+ years of strong full-stack development experience

Proficiency in frontend frameworks (React/Angular/Vue) and backend technologies (Node.js/Java/Python)

Good understanding of microservices, distributed systems, REST APIs, authentication, and caching

Experience with relational or NoSQL databases

Strong debugging and optimization skills

Background in cloud technologies (AWS/Azure/GCP)

Ability to mentor others and maintain high engineering standards

Strong ownership, communication, and problem-solving mindset

Experience with internal platforms, CI/CD, or event-driven architecture is a plus

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