Hire backend developers.
The part users never see is the part that takes you down. Put seniors on it.
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Senior engineers
In your repo and standups.
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Monthly terms
Stop with 2 weeks' notice.
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No hiring process
No recruiters. No notice periods.
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You own the code
100% of the IP, day one.
To hire backend developers in 2026, look for seniors who design the data model before the endpoints, write safe migrations, make every retryable operation idempotent, move slow work to queues, and ship logs, metrics and alerts with the feature. Common stacks are Node.js with TypeScript, Python, and Java with Spring Boot on PostgreSQL or MongoDB. Yarify provides senior backend engineers monthly with 2 weeks' notice, or as fixed-price builds.
An endpoint writer vs a senior backend engineer
Writes endpoints
- Schema grows one nullable column at a time
- Third-party API down, your app down
- Retries create duplicate orders
- Finds out about outages from customers
Owns the system
- Data model and migrations reviewed first
- Timeouts, retries and circuit breakers on every integration
- Idempotency keys on anything that writes
- Logs, metrics and alerts shipped with the code
Backend stacks we hire out
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Node.js
TypeScript, NestJS, Fastify.
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Python
FastAPI, Django, async workers.
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Java
Spring Boot, modular monoliths.
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Databases
PostgreSQL, MongoDB, Redis.
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APIs
REST, webhooks, OAuth.
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Cloud
Docker, Cloud Run, AWS.
Backends fail in boring ways
A webhook arrives twice. A partner API takes 40 seconds instead of 400 milliseconds. A migration locks the orders table at noon. None of it is exotic, and all of it is avoidable by engineers who have been paged for it before.
Pick the stack page that matches yours: Node.js, Python or Java. Need infrastructure work too? See DevOps engineers. Need the UI as well? Hire full-stack developers.
Hiring takes months. We start building.
Hiring a developer
- Job post & sourcing
- Interviews
- Notice period
- Onboarding
- Building
Yarify
- Call + fixed quote
- Building + weekly demos
- Live. Iterating with users.
Illustrative timeline. In-house hiring usually spends months on sourcing, interviews and notice periods before the first commit.
Three ways to hire backend developers
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Staff augmentation
A senior backend engineer joins your team, repo and on-call rota if you want. Monthly, 2 weeks' notice.
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Dedicated team
A small team owns the platform: APIs, data, integrations and deploys. Monthly.
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Fixed-price build
A new service, integration or rescue with a written scope and fixed quote. Overruns on our estimate are ours.
What a senior backend developer does
- Designs the data model and its constraints before writing endpoints
- Writes migrations that are safe on a live database with real traffic
- Puts timeouts, retries and idempotency on every external call
- Moves slow or flaky work to queues and background jobs
- Enforces authorization on the server for every request
- Ships structured logs, metrics and alerts with each feature
Interview questions for backend developers
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The payment webhook arrived twice. What happens?
Nothing, if they built it right: an idempotency key or unique constraint, and a handler that is safe to replay.
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Add a non-null column to a 50M-row table.
Add it nullable, backfill in batches, then add the constraint. Seniors never lock a hot table in one migration.
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A partner API is slow. What do you change?
Timeouts, a queue, retries with backoff, a circuit breaker and a user-visible pending state.
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How would you know it broke at 3 a.m.?
Error-rate and latency alerts on user-facing paths, structured logs with request IDs, and a runbook.
Backend developer rates by region
Hourly market bands from industry surveys. Not our price list: we quote after a free call.
| Region | Junior | Mid-level | Senior |
|---|---|---|---|
| United States | $70–100 | $100–140 | $140–200+ |
| Western Europe | $55–80 | $80–110 | $110–160 |
| Central & Eastern Europe | $30–45 | $45–60 | $60–80 |
| Latin America | $35–50 | $50–65 | $65–90 |
| South & Southeast Asia | $20–32 | $32–42 | $42–55 |
A senior CEE backend engineer runs about $9.6k–12.8k per full-time month at market rates. See software developer rates.
Your platform. Your cloud. Zero lock-in.
Monthly billing. Stop with 2 weeks' notice. You own 100% of the code and IP from day one, and infrastructure runs in your cloud account.
- Architecture decisions written down
- Runbooks for every alert we add
Backends we shipped
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Five Platforms, One Hour a Month
Internal platform for a marketing agency: generates short-form video from three inputs and publishes to YouTube, Instagram, Threads, Reddit and Telegram. Spring Boot, Next.js, MongoDB.
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Six Strategies, One Risk Layer
Async Python trading engine for Polymarket: six concurrent strategies, shared risk controls, EIP-712 signed orders via the CLOB API, under one second from signal to order.
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From Business Directory to Sales Pipeline
Python lead-sourcing CRM: async directory scraper across 50 sectors, one-at-a-time review queue with a live website preview, automatic SEO audit on approval, CRM statuses and Excel/XML export.
Questions buyers ask us
How much does it cost to hire a backend developer?
Industry surveys put senior backend developers at about $60–80 per hour in Central and Eastern Europe, $110–160 in Western Europe and $140–200+ in the US. A senior CEE month is roughly $9.6k–12.8k. We quote monthly or fixed-price after a free call.
Node.js, Python or Java for our backend?
Keep the language you already run unless it is the actual problem. For new work: Node.js with TypeScript when the team is JavaScript-heavy, Python for data, AI and integrations, Java with Spring Boot for large transactional systems.
Can your backend developers work in our existing codebase?
Yes, that is most of what staff augmentation is. We read the code, run it, ship a small fix in the first week and raise risks we find in writing, without rewriting what already works.
Do you handle databases and cloud too?
Yes. PostgreSQL, MongoDB and Redis schema design, query tuning and safe migrations, plus Docker, CI and deploys on Google Cloud or AWS. For larger infrastructure work, add a DevOps engineer.
Can you take over a backend another vendor built?
Yes. We start with a code and infrastructure audit, secure access and backups, then stabilise before adding features. See how to take over a software project.
Who owns the code?
You do, from day one. Code lives in your repository, infrastructure in your cloud account, and the contract assigns all IP to you. End the engagement with 2 weeks' notice and keep everything.
Keep reading
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Node.js developers
Senior Node.js engineers for APIs, queues, integrations and observability on NestJS, Fastify, Postgres and MongoDB. Join your team monthly or take a fixed-price backend build.
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Python developers
Senior Python engineers for FastAPI and Django backends, data pipelines, LLM tooling and automation that touches money. Monthly augmentation or a fixed-price project.
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Java developers
Senior Java and Spring Boot engineers for modular monoliths, Kafka, OAuth, enterprise integrations and Spring Boot upgrades. Monthly augmentation or fixed-price projects.
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DevOps engineers
Senior DevOps engineers for CI/CD pipelines, infrastructure as code, Kubernetes and monitoring on AWS or GCP. Join your team monthly or take a fixed-price setup.
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Full-stack developers
Senior full-stack engineers who own a feature from data model to deploy: API, UI, auth, payments and monitoring. Monthly augmentation, a dedicated team or a fixed-price build.
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Custom software development
Internal tools, client portals, CRM and ERP integrations, and workflow automation. Built by senior engineers on a fixed written quote, owned by you.
APIs that stay up when partners don't.
30 minutes with a senior backend engineer. Bring the endpoint or integration that keeps paging you.