Our tasks sometimes run twice. How do we stop that?

You mostly do not stop it — you design for it. Brokers give at-least-once delivery, so the durable fix is making tasks idempotent rather than chasing exactly-once semantics that the infrastructure will not give you.

Redis or RabbitMQ as the broker?

Redis is simpler and usually sufficient, especially if you already run it. RabbitMQ gives stronger delivery guarantees and better routing for complex topologies. For most teams, Redis is the right default.

Is Celery still the right choice, or should we look at alternatives?

For Python teams it usually still is, and the operational knowledge is widely available. For simpler needs, Dramatiq or RQ can be less machinery. We will recommend based on your actual workload, not familiarity.

Hire Celery Developers

Backend engineers for the background jobs that quietly fail and nobody notices until a customer does.

Get Matched with a Developer

Background task systems fail in ways that are hard to see: a task raises, the retry storms, the queue backs up, and the only symptom is that some emails never arrived. Our Celery engineers build task systems that are idempotent, observable, and honest about failure — with dead-letter handling rather than infinite retries.

What clients hire our Celery engineers for

Reliable task processing

Idempotent tasks with bounded retries and dead-letter queues, so a transient failure does not become a silent data problem.

Queue architecture

Separating fast and slow work onto different queues and workers so a long report job does not delay password reset emails.

Visibility

Monitoring queue depth, task latency, and failure rates, with alerting before a backlog becomes user-visible.

Celery skills we staff for

Celery workers, queues & routing

Redis & RabbitMQ brokers

Idempotency, retries & dead-letter handling

Celery Beat scheduled tasks

Django / FastAPI integration

Monitoring with Flower & Prometheus

When it’s worth bringing in Celery expertise

Hire a Celery engineer when background jobs fail silently, when the queue backs up under load, or when scheduled tasks sometimes run twice and sometimes not at all.

Flexible Hiring Models

Hourly

Pay only for the hours you need. Ideal for short tasks, fixes, and overflow work.

Dedicated (Monthly)

A full-time developer working only on your product, integrated into your team and tools.

Dedicated Team

A full squad — developers, QA, and a project manager — to own your roadmap end to end.

Need a whole team instead of one engineer? IT staff augmentation or browse every role we staff.

Hiring Celery developers — FAQs

Discuss your project

Tell us what you are building or what needs fixing. You will hear back from an engineer — not a sales rep — within one business day, usually with questions or a rough approach.

Your enquiry goes straight to our engineering team — the people who will scope and build your project, not a sales desk.

sales@dablewdevs.com Book a free 30-min call