Hire AI/ML Engineers

Hire AI/ML engineers who can explain why the metric moved

BinaryBrill is an AI engineer staffing company that lets you hire AI/ML engineers — and hire dedicated AI developers more broadly — from our own in-house team of senior engineers, vetted on production retrieval pipelines, training runs and inference bills rather than on a whiteboard. You run the technical interview yourself, and the person who joins is salaried and in-house, reporting to someone here who is accountable for whether they stay.

A senior engineer replies within 24 hours — not a sales rep.

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Why hiring an AI/ML engineer goes wrong

"Data scientist" and "ML engineer" get hired as if they're the same person

Someone who is excellent in a notebook — clean plots, a strong grasp of the maths, a model that scores well on a held-out set — is not automatically someone who can put that model behind an API, watch it under real traffic, and notice when training/serving skew is quietly eating the accuracy they measured. Hire on the wrong side of that line and the model that looked great in review never survives contact with production.

Nobody can tell if the retrieval pipeline is actually any good

Wiring an embedding model to a vector store and getting plausible-looking answers is a weekend's work. Whether it retrieves the right passage for the queries your users actually type is a different question, and without an engineer who builds evaluation sets as a matter of habit, you find out the pipeline is weak when a customer screenshots a wrong answer, not before.

Inference costs go unmanaged because nobody owns the number

A model that costs pennies a call in testing can turn into a five-figure monthly line once it's serving real volume — every request pulling a large context window, re-embedding documents that haven't changed, or routing trivial queries to your most expensive model. You need someone whose job includes watching that number, not just the accuracy one.

The interview rewards talking about AI, not having shipped it

A candidate who can discuss transformer architecture or the latest paper from memory is demonstrating recall, not production judgement. Plenty of people can hold a fluent conversation about machine learning without ever having owned a training pipeline, a serving system or an evaluation harness that a business actually depended on.

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How we help you hire AI/ML engineers who've actually shipped

We are not a marketplace forwarding CVs with "ML" in the title. Every engineer we propose is someone on our own team whose production work — the pipeline, the serving code, the evaluation set — we have reviewed ourselves.

The role gets defined by what breaks, not by a job title

Before we shortlist, we agree with your tech lead which layer this person actually needs to own — retrieval quality, serving and cost, or training and data — and what a good first quarter looks like. That single conversation removes most of the mismatch a generic "ML engineer" brief creates.

Vetted on production ML work, not a Kaggle notebook

Our engineers are assessed on systems they actually built and ran — what the evaluation set caught, what the cost dashboard showed, what broke after launch and what they changed. We tell you where each person is genuinely strong and where they're not, reservations included.

You interview, you decide, you can say no

Run your own technical interview with your own bar. Pair on a real retrieval or serving problem, review their evaluation code, ask about the metric that moved and why. Reject anyone for any reason and we go again — nobody joins your team without you having agreed.

In-house and salaried, so tenure is the incentive

Our AI/ML engineers are on our payroll, not a marketplace clock. We carry their development and care whether they stay on your project long enough to understand your data and your model's failure modes, rather than moving on the moment a better rate appears elsewhere.

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What this covers

Pick the piece you need, or bring us the problem and we'll tell you which applies.

Hire RAG & Retrieval Engineers

Retrieval pipelines end to end — chunking strategy, embedding choice, and the evaluation set that tells you when a change made answers better or quietly worse. Hire this specialism when an assistant or search feature is answering from your own documents and nobody currently measures whether it's finding the right passage.

  • Chunking, embedding and re-ranking decisions made against your content, not left on defaults
  • Evaluation sets scored on whether the right source was retrieved, not just whether the answer read well
  • Citation and freshness handling so answers can be traced to a current source
  • Judgement on when retrieval is the wrong fix and the actual problem is the underlying data

Hire Machine Learning Engineers for Serving & Cost Control

Serving and cost control — batching, caching, quantisation, and the judgement to use a smaller model where a larger one is overkill. Hire this specialism once a model or LLM feature is live and the inference bill has started to matter as much as the accuracy number.

  • Batching, caching and quantisation applied where they actually reduce spend
  • Model routing so trivial requests aren't paying premium-model prices
  • Latency and cost treated as monitored numbers, not a one-off launch estimate
  • Straight advice on when a smaller or open-weights model is genuinely sufficient

Hire Machine Learning Engineers for Training & Data Pipelines

Training and feature pipelines, labelling workflows, and the training/serving skew that erodes accuracy without any error ever being raised. Hire this specialism when model quality depends on data your organisation hasn't yet made consistent.

  • Feature and training pipelines that hold up against messy, real production inputs
  • Labelling workflows and quality checks that catch inconsistency between teams
  • Detection of training/serving skew before it shows up as a silent accuracy drop
  • Versioned datasets and experiments, so a quality change is provable rather than asserted

Hire MLOps & Deployment Engineers

A model is only as good as the pipeline that keeps it running — containerised serving, drift monitoring, and a retraining path for when user behaviour or your catalogue shifts under it. Hire this specialism when a model is live and nobody currently owns what happens when it starts to degrade.

  • Containerised, reproducible serving with versioned models
  • Drift and accuracy monitoring with alerting against agreed thresholds
  • Cost dashboards that stay visible after launch, not just before it
  • A documented retraining runbook your own team can run without us

AI Engineer Staffing & Screening Advice

Distinguishing a genuine ML engineer from a data scientist who has only worked in notebooks is most of the hiring problem, and it's the part a standard technical interview usually misses. As an AI engineer staffing company, this is advice we give whether or not you hire through us.

  • A rubric for telling notebook fluency apart from production ML experience
  • Interview questions that surface how a candidate handled a model that got worse in production
  • Guidance on which ML specialism your roadmap actually needs before you write the job spec
  • An honest read on whether the role is really one hire or secretly two

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The stack we build on

Chosen to fit the problem — not because it's what we used last time.

Modelling & training

  • Python
  • PyTorch
  • TensorFlow
  • scikit-learn
  • XGBoost
  • Weights & Biases

Retrieval & LLM tooling

  • LangChain
  • LlamaIndex
  • Hugging Face Transformers
  • Postgres with pgvector
  • Pinecone
  • Weaviate

Serving & MLOps

  • FastAPI
  • Docker
  • Kubernetes
  • MLflow
  • Ray
  • Triton Inference Server

Cloud & data pipelines

  • AWS SageMaker
  • Google Vertex AI
  • Azure Machine Learning
  • Apache Airflow
  • dbt
  • Snowflake

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How we'll work together

Every stage ends with something in your hands — not a status update.

  1. 01

    Turn the vacancy into an ML skills profile

    A working call with whoever this person reports to. We pin down whether the gap is retrieval quality, serving and cost, or training and data pipelines, the overlap hours you need, and the problems this engineer is expected to own inside a quarter.

    You get: A written role profile covering the specific ML layer, seniority band, ownership and the questions we suggest you ask in interview.

  2. 02

    Screen before we spend your time

    We run the technical assessment ourselves — architecture reasoning on a retrieval or serving problem, a code review exercise, and a conversation about an evaluation set or a cost problem they actually solved. Only people we'd trust on our own hardest ML work reach your inbox.

    You get: A short shortlist with real project history and honest written notes on each candidate's strengths and gaps.

  3. 03

    Your interview sets the bar

    Interview as you would a permanent hire. Pair with them on a real retrieval or serving problem, review evaluation code together, ask about the model that quietly got worse and how they caught it. We stay out of the way apart from scheduling.

    You get: Interview slots inside your working hours, plus a written summary of what was agreed on scope and start date.

  4. 04

    Make the first weeks count

    Access to your data, pipelines and evaluation harness is arranged before day one, with a deliberately small first ticket lined up — a chunking change, a monitoring alert, a cost fix. Merged code and a moved metric in the first week tell you more about fit than another interview round would.

    You get: An onboarding plan agreed with your lead, a named point of contact on our side, and early merged work you can review.

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Where we've applied this

Healthcare

Engineers who build evaluation sets a clinician can actually read, and who treat audit logging on a clinical model as a requirement, not an afterthought.

Finance

Anomaly and fraud detection tuned to the false-positive rate your compliance team can staff, with an engineer who owns why a flag fired.

Retail and e-commerce

Recommendation and search ranking specialists who keep the model honest about what's actually in stock.

Logistics

Forecasting engineers who account for seasonality and route disruption, rather than a model trained once on a clean quarter.

SaaS platforms

Engineers who build the retrieval and evaluation behind an in-product copilot, not just the chat window in front of it.

Professional services

Document extraction and contract review specialists who route the ambiguous case to a person instead of guessing.

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Questions buyers ask us

How do we know if we need an AI/ML engineer, and which specialism?

If you have a model or an LLM feature in production, or about to be, and nobody currently owns whether it's getting better or quietly worse, that's the role. Which specialism depends on where the actual gap is: retrieval quality if answers are inconsistent, serving and cost if the inference bill is the problem, or training and data pipelines if accuracy depends on labels nobody has made consistent. We help you pin that down on the first call rather than starting from a generic "ML engineer" brief.

Hire when you already have, or will soon have, an AI feature that needs a permanent owner — someone accountable for the evaluation set, the cost dashboard and what happens when accuracy drifts. A project engagement makes more sense when the work has a defined end date and no ongoing ownership need, or when you're still deciding whether machine learning is the right tool at all. We do both, and we'll tell you honestly which one fits what you've described.

Seniority is the largest factor, then how scarce the specific specialism is — an engineer who can own a production inference path is scarcer than one who can fine-tune a small classifier — then how much of your working day needs covering. We put a written role profile together first so the number you're comparing is specific to the role, not a range off a pricing page, and a shortlist follows once that's agreed.

A marketplace matches you to a freelancer and steps back; the engineer's incentives, tooling and career sit outside the arrangement. Our AI/ML engineers are in-house and salaried, reviewed internally, and someone here is accountable for their growth and for whether they stay on your work. We are not the lowest number you'll be quoted — we compete on the seniority of the person and on how long they stay after they've learned your data and your model's quirks.

They join your board, your repository, your branching rules and your stand-up rather than running a parallel plan. Our team works from Punjab, India, which gives a natural afternoon overlap with the UK and Europe; for US clients engineers shift later so your morning is covered. We agree the specific window before anyone starts.

Everything an engineer writes for you — pipelines, evaluation code, model artefacts — is yours, in your repository, from the first commit. They sign your NDA, work under your access controls, and can be restricted to company-managed devices or VPN-only access where your policy requires it. Your data isn't used to train anything outside your project.

When you genuinely need two specialisms running at once — someone owning retrieval quality while someone else owns serving cost — a single hire will be stretched thin covering both. It's also the wrong move if you don't yet have any AI feature in production and haven't tested whether the idea is feasible against your data; that's discovery work, better scoped as a short project than a permanent hire. We'll say so rather than placing someone into a role that isn't ready yet.

Yes, and we'd push back if you didn't want to. We screen first so you're not sifting CVs, then you run whatever process you use for permanent hires — pairing, code review, a walk through an evaluation set, your call. You can reject anyone without justifying it, and nobody joins your team on our say-so alone.

Our own in-house engineers in Sahibzada Ajit Singh Nagar, Punjab — 45+ of them, with over a decade of combined delivery experience, delivering for clients in 15+ countries. Nothing is subcontracted, and nobody joins your team without you interviewing them first. Once someone is placed, everything they write is committed to your repository from day one, so ownership was never in question.

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Tell us which ML problem needs an owner

Send us the specialism — retrieval, serving and cost, or training and data — and what this person would own in their first quarter. A senior engineer replies within 24 hours with candidates worth your time, or a straight answer if a hire isn't actually the right move yet.