Senior Full-Stack Developer

DevDefy; Karachi Division; On-site; PKR 4,500,000 - 7,500,000; Full time

Job summary

DevDefy is hiring a Senior Full-Stack Application Developer to ship production-grade web applications end-to-end. You will leverage AI tools responsibly, turning ambiguous requests into crisp specs and acceptance criteria.

Ideal candidates understand agentic development, back-end with PostgreSQL and AWS, front-end with strong UI architecture, and DevOps with CI/CD, Docker, and IaC. You will contribute to multi-tenant SaaS systems and reliable deployment practices.

Qualifications

• 5+ years of full-stack development experience.
• Ability to ship production-grade web applications end-to-end.
• Experience with AI-assisted development and agentic workflows.
• Experience with multi-tenant SaaS architectures and RBAC.

Responsibilities

• Design and implement scalable frontend and backend components.
• Develop and maintain CI/CD pipelines and containerized deployments.
• Apply security best practices and manage access controls.
• Collaborate on architecture and product specs with AI tooling.

Skills

UI architecture

Component design

State management

Performance optimization

Tailwind CSS

Responsive design

Accessibility basics

PostgreSQL

Indexing

Query optimization

AWS

IAM / security basics

CI/CD

Docker

Terraform / IaC

Observability / OpenTelemetry / Sentry

Multi-tenant SaaS

RBAC

Testing / PRs

Tools

GitHub Actions

Docker

Terraform

AWS EC2/ECS/Lambda

CloudWatch

S3

SQS/SNS

OpenTelemetry

Sentry

Job description

We’re hiring aSenior Full-Stack Application Developer (5+ years)who can ship production-grade web applications end-to-end and use modern AI/agentic workflows responsibly (high-signal output, not AI-generated noise).

We specifically want someone who knows how to use AI tools without damaging the codebase:

• Agentic spec-driven development(turn ambiguous asks into crisp specs + acceptance criteria)
• AI coding assistant power user(Claude/Codex or similar)
• Understands how to avoidAI slop(hallucinations, over-abstraction, unreviewable diffs, "works on my machine" code)
• Awareness ofcontext engineering / RPI
• Understandscontext dumb zonesand usesback pressureto prevent runaway complexity
• Strongproblem decomposition(right-size tasks for agents with verifiable outputs)

Front-end Skills:

• Strong UI architecture, component design, state management, and performance optimization
• Strong CSS implementation (Tailwind or equivalent), responsive design, and accessibility basics

Back-end Skills:

• StrongPostgreSQL(schema design, indexing, migrations, query optimization)
• StrongAWSexperience including:
• Security fundamentals (IAM, least privilege, secrets management)
• Storage/queues/services as needed (e.g., S3, SNS/SQS, ECS/Fargate/Lambda, RDS, CloudWatch)

DevOps / Delivery Skills:

• Strong hands-onCI/CD(GitHub Actions/GitLab or similar)
• StrongDockerworkflow (local + production-ready images)
• StrongInfrastructure as Code(Terraform or AWS CDK)
• Strongobservabilityand debugging:
• Logging/monitoring/tracing (CloudWatch,Sentry,OpenTelemetryor similar)
• Ability to build and maintainmulti-tenant SaaSsystems
• StrongRBAC / permissionsimplementation experience
• Writes testable, maintainable code with clean PRs and reliable rollout practices