Haystack

Hire by tech stack

Hire developers by the tech stack you actually use.

Browse 127 stacks, filtered by category. Every engineer is pre-vetted with transparent salary, notice period and shipped work - no agency calls, no commission.

Hire by tech, anywhere

127

Tech stacks

Frontend · Backend · Data · Infra

24h

First shortlist

from kick-off call

14–21

Days to hire

median across stacks

3

Markets

UK · Germany · US

Browse by category

127 stacks. One vetted pipeline.

Pick a stack to see live salary benchmarks, sample interview questions, and shortlist-ready talent.

Frontend

16 stacks

Hire React developers

Senior React developers who ship production interfaces - not just demos.

£65k–£85k

Hire Vue developers

Vue 3 and Nuxt developers who treat the Composition API as a design tool.

£60k–£80k

Hire Angular developers

Angular engineers who can navigate RxJS, signals and large enterprise codebases.

£60k–£80k

Hire Next.js developers

Next.js engineers who actually understand the rendering model - not just the file router.

£70k–£95k

Hire Svelte developers

Svelte and SvelteKit developers who actually ship - not just blog about it.

£65k–£85k

Hire Nuxt developers

Nuxt 3 developers who ship SSR e-commerce and content sites that pass Core Web Vitals.

£65k–£85k

Hire Remix developers

Remix developers who treat loaders and actions as the real architecture - not the UI.

£65k–£85k

Hire Astro developers

Astro developers who ship content sites that beat WordPress on speed and DX.

£60k–£80k

Hire Tailwind CSS developers

Tailwind developers who build maintainable design systems - not utility-class soup.

£60k–£80k

Hire Qwik developers

Qwik developers who actually understand resumability, not just hydration.

£65k–£85k

Hire SolidJS developers

SolidJS developers who get fine-grained reactivity, not just JSX.

£65k–£85k

Hire Gatsby developers

Gatsby developers who maintain serious content sites without rewriting them.

£55k–£80k

Hire Preact developers

Preact developers who keep bundles tiny without losing the React mental model.

£60k–£80k

Hire Lit developers

Lit developers who can build framework-agnostic web components teams actually adopt.

£60k–£80k

Hire Ethers.js developers

Web3 engineers who interact with chains via Ethers / Viem without footguns.

£65k–£90k

Hire Vite developers

Frontend engineers who own Vite-based build setups instead of just inheriting them.

£60k–£80k

Backend

41 stacks

Hire Node.js developers

Node.js engineers who build production services - not weekend prototypes.

£70k–£90k

Hire Python developers

Python engineers across web, data and AI - vetted on production work, not notebook demos.

£65k–£85k

Hire Django developers

Django engineers who know the ORM, the cache layer and where the foot-guns hide.

£65k–£85k

Hire Spring Boot developers

Spring Boot engineers who design beyond the annotation soup.

£70k–£90k

Hire .NET developers

.NET engineers who ship modern ASP.NET Core services - and can navigate legacy estates without flinching.

£70k–£90k

Hire Go developers

Go engineers who ship boring, fast, observable services.

£70k–£95k

Hire Ruby on Rails developers

Rails engineers who can ship features fast and scale the monolith long-term.

£65k–£85k

Hire Laravel developers

Laravel engineers shipping production apps with Livewire, Filament and Octane.

£60k–£80k

Hire PostgreSQL developers

PostgreSQL engineers who design for query plans, not just tables.

£70k–£90k

Hire MongoDB developers

MongoDB developers who model documents around access patterns, not screenshots from a tutorial.

£65k–£85k

Hire Redis developers

Redis engineers who treat eviction policies and persistence as a design choice.

£70k–£90k

Hire FastAPI developers

FastAPI developers who use async, typing and Pydantic as actual design tools.

£70k–£95k

Hire NestJS developers

NestJS developers who use modules and DI to keep large TypeScript backends sane.

£70k–£90k

Hire Express developers

Express engineers who know what a custom middleware actually costs at scale.

£65k–£85k

Hire GraphQL developers

GraphQL engineers who design schemas as a contract, not a dump of the database.

£70k–£95k

Hire WordPress developers

WordPress developers who take performance, security and editor UX seriously.

£55k–£75k

Hire Shopify developers

Shopify developers who can ship custom themes, apps and headless storefronts on Hydrogen.

£65k–£90k

Hire Elasticsearch developers

Search engineers who care about relevance, not just green clusters.

£70k–£90k

Hire MySQL developers

MySQL engineers who own schema design, replication and the boring ops work.

£60k–£80k

Hire DynamoDB developers

DynamoDB engineers who can actually do single-table design without regret.

£70k–£95k

Hire Phoenix developers

Phoenix developers who use LiveView to ship realtime apps without a SPA.

£70k–£95k

Hire Flask developers

Flask developers who keep APIs lean without recreating a framework.

£60k–£80k

Hire Symfony developers

Symfony developers who build serious PHP apps - DDD, messenger, the lot.

£60k–£80k

Hire Fastify developers

Node engineers who pick Fastify when they care about throughput, not just DX.

£65k–£85k

Hire Koa developers

Koa developers who keep middleware stacks lean and predictable.

£60k–£80k

Hire Strapi developers

Strapi developers who customise the admin properly, not just install plugins.

£60k–£85k

Hire Sanity developers

Sanity developers who design real content models, not just blocks of fields.

£65k–£90k

Hire Payload CMS developers

Payload developers who treat the CMS as part of their TypeScript codebase.

£65k–£90k

Hire Quarkus developers

JVM engineers who use Quarkus to ship fast, container-friendly services.

£70k–£95k

Hire Micronaut developers

JVM engineers who use Micronaut where startup time and memory matter.

£70k–£95k

Hire Ktor developers

Kotlin engineers who use Ktor to ship lean coroutine-first servers.

£70k–£95k

Hire Gin developers

Go engineers who ship fast HTTP services on Gin without sprawling middleware chains.

£70k–£90k

Hire Fiber developers

Go engineers who use Fiber where throughput is the constraint.

£70k–£90k

Hire Cassandra developers

Cassandra engineers who design partitions for the queries they actually run.

£75k–£100k

Hire CockroachDB developers

Backend engineers who use CockroachDB for serious distributed SQL.

£70k–£95k

Hire Neo4j developers

Graph engineers who use Neo4j when relationships are the product.

£70k–£95k

Hire PlanetScale developers

Backend engineers who use PlanetScale to scale MySQL without operational pain.

£70k–£90k

Hire InfluxDB developers

Engineers who use InfluxDB for time-series without drowning in cardinality.

£70k–£90k

Hire Hardhat developers

Smart contract engineers who use Hardhat to ship Solidity safely.

£75k–£100k

Hire Bun developers

JS engineers who ship serious services on Bun, not just hello-world benchmarks.

£70k–£90k

Hire Deno developers

JS engineers who use Deno for secure-by-default TypeScript services on the edge.

£70k–£90k

Languages

22 stacks

Hire TypeScript developers

TypeScript engineers who treat types as a design tool, not just a linter.

£70k–£90k

Hire JavaScript developers

JavaScript engineers fluent in modern ECMAScript, runtimes and the platform itself.

£60k–£80k

Hire Java developers

Java engineers with deep JVM, Spring and distributed-systems experience.

£70k–£90k

Hire C# developers

C# engineers fluent in async, records, source generators and modern language features.

£70k–£90k

Hire Rust developers

Rust engineers who can reach for the borrow checker without freezing - and ship production code.

£75k–£100k

Hire Ruby developers

Ruby engineers who love the language and can scale the monolith.

£65k–£85k

Hire PHP developers

PHP engineers who write modern, typed, tested code - not legacy spaghetti.

£60k–£80k

Hire Kotlin developers

Kotlin engineers fluent in coroutines, multiplatform and Jetpack Compose.

£70k–£90k

Hire Solidity developers

Solidity engineers who think in attacker mindset, not just happy-path tests.

£80k–£105k

Hire Elixir developers

Elixir developers who actually understand OTP, not just the syntax.

£70k–£95k

Hire Scala developers

Scala developers who balance FP purity with shipping real systems.

£75k–£100k

Hire C++ developers

C++ developers who write modern, safe, fast code - not 90s C with classes.

£75k–£100k

Hire Dart developers

Dart developers who can ship Flutter apps and serious server-side code.

£65k–£90k

Hire Julia developers

Julia developers who can take models from notebook to production.

View stack

Hire Haskell developers

Haskell engineers who ship real systems, not just elegant type signatures.

£80k–£100k

Hire F# developers

.NET engineers who use F# where domain modeling and correctness pay off.

£70k–£95k

Hire Erlang developers

Erlang engineers who design supervision trees that survive real failures.

£75k–£100k

Hire Lua developers

Lua developers who embed scripting where C and Go are too heavy.

£65k–£85k

Hire Perl developers

Perl developers who can maintain legacy systems without setting them on fire.

£60k–£75k

Hire OCaml developers

OCaml engineers who ship correctness-critical systems other languages can't.

£80k–£100k

Hire Zig developers

Systems engineers who use Zig where C and Rust both feel wrong.

£75k–£100k

Hire Groovy developers

JVM engineers who keep Groovy-heavy build and test stacks healthy.

£60k–£80k

DevOps & Cloud

21 stacks

Hire AWS developers

AWS engineers who design for cost, resilience and a real on-call rota.

£80k–£105k

Hire Azure developers

Azure engineers fluent in AKS, Functions and the enterprise networking story.

£75k–£100k

Hire Google Cloud developers

GCP engineers fluent in GKE, BigQuery and Cloud Run.

£75k–£100k

Hire Kubernetes developers

Kubernetes engineers who design clusters as products, not pets.

£85k–£110k

Hire Terraform developers

Terraform engineers who treat modules as a product and state as production data.

£75k–£100k

Hire Docker developers

Engineers who build small, secure, reproducible images by default.

£70k–£95k

Hire Cloudflare developers

Edge engineers who ship serious products on Workers, R2 and D1.

£75k–£100k

Hire Vercel developers

Engineers who ship serious Next.js apps on Vercel without surprise bills.

£70k–£95k

Hire Supabase developers

Supabase developers who can ship full-stack apps on Postgres without footguns.

£65k–£90k

Hire Ansible developers

Ansible engineers who keep config drift from quietly destroying the fleet.

£70k–£95k

Hire Jenkins developers

Jenkins engineers who can clean up a CI mess, not just maintain it.

£70k–£90k

Hire GitHub Actions developers

Engineers who use GitHub Actions like a real CI system, not glue scripts.

£70k–£95k

Hire Prometheus developers

SREs who design Prometheus + Grafana stacks SLOs can actually rely on.

View stack

Hire Datadog developers

SREs who get Datadog working hard - without setting fire to the bill.

View stack

Hire Pulumi developers

Platform engineers who use Pulumi where Terraform's DSL stops scaling.

£75k–£100k

Hire Argo CD developers

Platform engineers who run GitOps with Argo CD without making it a black box.

£75k–£100k

Hire Istio developers

Platform engineers who run Istio without setting fire to every release.

£80k–£105k

Hire HashiCorp Vault developers

Security engineers who run Vault as a real secrets platform, not a backup KV.

View stack

Hire OpenTelemetry developers

SREs who use OpenTelemetry to stop being locked in to one observability vendor.

View stack

Hire Sentry developers

Engineers who use Sentry as a real triage and quality tool, not just an error firehose.

View stack

Hire Bazel developers

Build engineers who use Bazel where everything else has run out of road.

£85k–£110k

Data & AI

20 stacks

Hire TensorFlow developers

TensorFlow engineers who ship models into production - not just notebooks.

£90k–£120k

Hire PyTorch developers

PyTorch engineers who understand the difference between research code and a serving pipeline.

£95k–£125k

Hire LangChain developers

LangChain and LLM engineers who ship RAG and agents that survive contact with real users.

£90k–£120k

Hire Apache Spark developers

Spark engineers who can tune jobs, not just write them.

£75k–£100k

Hire Snowflake developers

Snowflake engineers who own modeling, performance and the credit bill.

£75k–£100k

Hire Databricks developers

Databricks engineers who can build a real lakehouse, not just a notebook.

£80k–£105k

Hire dbt developers

Analytics engineers who treat dbt projects like real software.

£70k–£90k

Hire Apache Airflow developers

Airflow engineers who design DAGs you can actually debug at 3am.

£70k–£90k

Hire Apache Kafka developers

Kafka engineers who treat streams as a contract, not a fire hose.

£80k–£105k

Hire R developers

R developers who do real statistics, not just dashboards.

View stack

Hire BigQuery developers

BigQuery engineers who model for performance and control the bill.

£75k–£100k

Hire Amazon Redshift developers

Redshift engineers who can model, distribute and tune for real workloads.

£70k–£95k

Hire ClickHouse developers

ClickHouse engineers who design schemas and ingest for serious analytical scale.

£80k–£105k

Hire DuckDB developers

DuckDB engineers who use embedded analytics to kill brittle pipelines.

£70k–£95k

Hire Hugging Face developers

ML engineers who use Hugging Face to ship serious models, not demo notebooks.

£85k–£115k

Hire Pinecone developers

AI engineers who use Pinecone to build retrieval that actually works in production.

£85k–£115k

Hire Weaviate developers

AI engineers who treat Weaviate as a real database, not just a vector store.

£85k–£115k

Hire OpenAI developers

AI engineers who ship serious OpenAI-powered products, not just chat demos.

£90k–£120k

Hire Anthropic developers

AI engineers who use Claude for long-context, tool-using agents that survive prod.

£90k–£120k

Hire Ray developers

ML platform engineers who scale Python with Ray instead of writing more YAML.

£90k–£120k

Hires made on Haystack by teams like

American ExpressAWSDuckDuckGoGoodlordPayPointLeonardoEPAMRaytheonAnswer DigitalAmerican ExpressAWSDuckDuckGoGoodlordPayPointLeonardoEPAMRaytheonAnswer Digital

Leading tech employers use Haystack to hire world-class candidates

Answer Digital

"For anyone in the industry struggling with tech hiring and finding those really niche candidates, I'd highly recommend using Haystack. Ultimately Haystack helped us find great candidates that we couldn't find anywhere else."

Jonny Hiles

Jonny Hiles

Talent Acquisition Lead

Read full case study
Leonardo

"Working with Haystack has helped us widen our brand, it's helped us recruit great people, and it's been an easy thing to do. When we think about our candidate experience and the experience of people in my team, I want that rounded experience and that's what we've seen with Haystack."

Craig Drysdale

Craig Drysdale

VP Talent & Engagement

Read full case study
PayPoint

"I'm really impressed with the candidates that I'm finding on Haystack, I'm looking at them and thinking, 'wow, this looks like a great engineer'. We made multiple hires in our first year. It's been a really nice way to hire tech talent, with a very unique approach."

Marek Kafar

Marek Kafar

Senior IT Recruiter

Read full case study

Need a specific stack on the team?

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