About the Client

https://vault.com/

Our client is the company behind Vault — a well-established platform providing career intelligence, employer insights, and professional development resources to a global audience.

As part of their continued growth, the company is investing in building new internal and external systems focused on communication, marketing, and integrations, with a strong emphasis on scalability, reliability, and modern architecture.

Overview

We are seeking a highly experienced Senior Full-Stack Developer / Architect to lead the design, development, and delivery of scalable, production-grade systems.

This role goes beyond feature development — you will own the full software lifecycle, from architecture and implementation to deployment and long-term reliability.

You will play a key role in translating business requirements into robust technical solutions while ensuring system scalability, performance, and maintainability.

Key Responsibilities:

End-to-End System Ownership

Design and deliver complete solutions across the full stack (UI → API → database → integrations)
Own system architecture and long-term maintainability
Ensure high availability, performance, and data integrity in production

Architecture & System Design

Design scalable data models (relational + flexible structures such as JSON/JSONB)
Define service boundaries and integration patterns (REST, GraphQL, event-driven systems)
Anticipate scale challenges, failure modes, and dependencies
Make and clearly communicate architectural trade-offs

Full-Stack Development

Build and maintain: Frontend applications (React, Angular, Vue, Next.js); Backend services (Node.js, Python, Java, or C#); APIs and business logic layers.
Design and optimize databases (PostgreSQL, MySQL, MongoDB);
Implement secure authentication and authorization mechanisms.

Infrastructure & DevOps

Design and manage cloud infrastructure (AWS or Azure)
Build and maintain CI/CD pipelines
Implement monitoring, logging, and alerting systems
Ensure system security and compliance standards

Production Ownership

Take responsibility for system uptime, performance, and reliability
Implement observability (logs, metrics, tracing)
Design resilient systems (retry logic, idempotency, fault tolerance)
Troubleshoot and resolve production issues

Engineering Standards & Leadership

Establish and enforce coding standards and testing practices
Prevent technical debt and ensure maintainable code
Conduct code reviews
Mentor and support junior and mid-level engineers

Cross-Functional Collaboration

Translate business requirements into technical solutions
Collaborate with stakeholders to deliver projects on time and within budget
Coordinate across teams for successful system integration

Required Qualifications

7+ years of experience in full-stack software development;
Proven experience designing and delivering scalable production systems;
Strong expertise in: Frontend frameworks (React, Angular, Vue, or similar) Backend development (Node.js, Python, Java, or C#)
Strong experience with PostgreSQL and database design/optimization;
Hands-on experience with AWS or Azure;
Experience with containerization (Docker, Kubernetes);
Strong understanding of API design (REST / GraphQL);
Experience with CI/CD pipelines and DevOps practices;
Deep understanding of system design, performance, and scalability;
Strong problem-solving and communication skills;
Ability to work independently and take ownership.