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Machine learning, built to last in production

Hire a freelance machine learning developer who delivers production ML

Develop intelligent machine learning and AI systems that turn your data into predictive insights, automate processes, and enable smarter business decisions for scalable growth. Data to deployment, one engineer, direct access.

Upwork100% Job Success Score
LinkedIn11,000+ Network
MicrosoftAI Certification

Available now, projects start within 48 to 72 hours, NDA before any data moves

0+Years shipping production AI
0%Upwork job success score
0Delivered AI case studies
48hFrom call to kickoff
production accuracy, illustrative healthy
92.1%Current accuracy
4wSince last retrain
3Drift alerts fired
Status summary

    You own everythingCode, weights, and training scripts, outright, no licensing fees after handoff.
    Data audited before billingData issues are surfaced in discovery, not discovered mid-training.
    Explainable where it mattersSHAP-based explanations on churn, risk, and scoring models.
    Monitored, not abandonedDrift detection and retraining pipelines, so accuracy stays where you left it.

    Plain answer

    What is a freelance machine learning developer?

    Quick answer

    A freelance machine learning developer is an independent engineer who designs, trains, evaluates, and deploys custom ML models for businesses on a contract or project basis. Unlike a full-time hire, a freelance ML developer starts in days, not months, brings senior-level expertise without salary overhead, and works directly on your problem with no intermediary. Deliverables include trained models, inference APIs, data pipelines, and MLOps infrastructure ready for production.

    A freelance ML engineer handles the full technical scope: dataset preparation, architecture selection, training experiments, hyperparameter optimisation, evaluation, and deployment. The distinction from a data scientist is important: a data scientist analyses data and builds experiments, while an ML developer engineers the production system that runs reliably at scale. Freelance engagements run from 2-week proof-of-concepts to 6-month dedicated builds, and you own all code, models, and weights outright.

    Run the numbers first

    What silent drift could be costing you

    This is a planning tool, not a published benchmark. Set the decay rate to whatever you believe is realistic for your model, and see what an unmonitored model degrading quietly is worth in decisions gone slightly wrong.

    Estimated value at risk, this year $140K
    10.8%Estimated accuracy lost so far
    $11.6KAt risk per month, at current decay
    n/aPayback on a $6,000 monitoring setup
    Get a model audit

    Illustrative only, driven entirely by the assumptions you set above, not a published industry figure. Real decay rates vary enormously by domain. The point of this tool is to make the shape of the risk visible, not to predict your exact number. A model audit gives you a real one.

    Job title decoder

    ML developer vs ML engineer vs data scientist: which do you need?

    One of the most common pre-hire questions. Most hiring managers searching "hire ML developers" or "hire machine learning developers" need the ML developer or ML engineer profile: someone who ships working systems, not just notebooks. That is what I do.

    RolePrimary focusOutputWhen to hire
    ML developerBuilding ML-powered applications and APIsProduction ML app, inference APIYou need ML integrated into a product
    ML engineerModel architecture, training pipelines, MLOpsTrained model, pipeline, monitoringYou need robust, scalable ML infrastructure
    Data scientistExploration, analysis, statistical modellingNotebooks, reports, insightsYou need to understand data before building
    Freelance ML developer (Shreyans)Full scope: data to productionModel plus API plus documentation plus monitoringYou need end-to-end from one engineer

    Freelance, dedicated, or in-house: which model fits?

    FactorFreelance (project-based)Dedicated engagementIn-house hire
    Cost$ fixed per project$$ monthly retainer, no benefits overhead$$$$ salary plus benefits plus equity
    Start time48 to 72 hours1 week3 to 6 months
    CommitmentScoped deliverableOngoing, scalable hoursPermanent headcount
    Access to engineerDirect, alwaysDirect, alwaysDirect, always
    Best forDefined scope, 2 to 12 weeksGrowing ML roadmap, 3 to 12 monthsCore product IP, long-term
    RiskLow, milestone-basedLow, monthly cancel optionHigh, hiring risk plus notice period

    Need a dedicated engineer embedded in your team

    I offer dedicated monthly engagements: a set number of hours per week, direct Slack and meeting access, and sprint-based delivery. Dedicated clients get priority availability and continuous model improvement cycles.

    What I build

    Machine learning development services

    End-to-end ML solutions that turn data into intelligent, self-learning systems, from predictive analytics to automation. Violet tags target a specific platform. Amber is the ongoing operations layer.

    Custom ML model development

    Models matched precisely to your data and business objective: supervised, semi-supervised, or unsupervised, on tabular, text, image, or time-series data. Output: trained model plus inference API plus evaluation report.

    • Classification and multi-label prediction models
    • Regression and time-series forecasting
    • Ranking and scoring models for recommendations and lead scoring

    Predictive analytics and forecasting

    Convert historical business data into forward-looking predictions: demand forecasting, churn prediction, revenue forecasting, risk scoring, with explainable models stakeholders can trust and act on.

    • Sales and demand forecasting, MAPE benchmarks provided
    • Customer churn prediction with SHAP-based explanations
    • Risk and credit scoring models

    Deep learning and neural networks

    For tasks where classical ML reaches its ceiling: image classification, speech recognition, multi-modal inputs, complex pattern detection. I select the right architecture and train it within your compute budget.

    • Image and video classification: CNNs, EfficientNet, YOLO
    • Sequence modelling: LSTM, GRU, Transformer
    • Multi-modal models combining text, image, and structured data
    PLATFORM

    ML for web applications

    Integrate machine learning directly into your web application: real-time prediction APIs, recommendation engines for web platforms, and intelligent search, deployable to AWS, GCP, or Azure.

    • Real-time prediction APIs for web front-ends
    • ML-powered search and ranking for web platforms
    • A/B testing infrastructure for model comparison in production
    PLATFORM

    ML for mobile applications

    On-device and cloud-backed ML for iOS and Android: lightweight models optimised for mobile inference, plus cloud APIs mobile apps call for heavier inference tasks.

    • TensorFlow Lite models for on-device inference
    • Core ML integration for iOS
    • Cloud ML API backends for Android and cross-platform apps

    Recommendation systems

    Personalisation engines for ecommerce, content platforms, and SaaS products: collaborative filtering, content-based, and hybrid approaches, built and A/B tested against revenue metrics.

    • Collaborative filtering and matrix factorisation
    • Content-based and hybrid recommendation models
    • Real-time recommendation APIs with sub-100ms latency

    Anomaly and fraud detection

    Identify unusual patterns in transactions, logs, sensor data, or user behaviour with real-time pipelines that flag issues without flooding teams with false positives.

    • Unsupervised anomaly detection: Isolation Forest, Autoencoders
    • Real-time fraud scoring via API
    • Threshold calibration to control the precision vs recall trade-off

    Natural language processing

    Text classification, sentiment analysis, named entity recognition, document intelligence, and LLM-powered features. See the dedicated NLP page for full scope.

    • Text classification and intent detection
    • Sentiment and entity analysis
    • LLM-powered features: summarisation, Q&A, generation
    ONGOING OPS

    MLOps, monitoring, and retraining

    A model that is not monitored will degrade. I set up model versioning, drift detection, performance dashboards, and automated retraining pipelines that keep accuracy stable as real-world data shifts.

    • MLflow model registry and experiment tracking
    • Drift detection with automated alerts
    • CI/CD pipeline for retraining on new data

    The story behind the demo above

    Why monitored models outperform models that are deployed and forgotten

    Quick answer

    A trained model is a snapshot of the world at training time. As real-world data shifts, whether from new fraud patterns, seasonal demand, or changing customer behaviour, the model's accuracy quietly erodes. Nothing crashes and no error gets thrown. The predictions just get worse, one query at a time, until someone notices the outcomes have drifted from what the model promised. Monitoring and scheduled retraining catch that erosion before it compounds.

    REAL-TIME MONITORING

    When the cost of a stale model is immediate

    • Fraud and anomaly detection, where attack patterns evolve week to week
    • Real-time bidding or pricing, where a wrong call is a lost transaction
    • Any model whose training data has a short shelf life
    SCHEDULED BATCH REVIEW

    When drift is slower and predictable

    • Demand forecasting, where seasonality is the main driver of change
    • Churn prediction, where customer behaviour shifts gradually
    • Models with a stable, well-understood feature distribution

    Both paths use the same underlying infrastructure: a registry, a drift metric, and a retraining trigger. The difference is how sensitive the trigger is, and that is exactly the kind of decision a discovery call resolves before any pipeline gets built.

    Expectations, in writing

    What results to expect: ML project benchmarks

    Concrete expectations based on delivered projects. Every engagement includes a written technical spec with target metrics before work begins. Benchmarks assume reasonably clean, domain-specific training data, audited in the discovery phase. If data is insufficient, you will hear that before any billing begins.

    Project typeTypical accuracy / performanceTimeline to production
    Text classification (BERT fine-tune)88 to 94% F1 on held-out test set3 to 5 weeks from labelled data
    Tabular prediction (XGBoost / LightGBM)AUC-ROC 0.85 to 0.94 depending on data quality2 to 4 weeks from clean dataset
    Demand forecasting (LSTM / Prophet)MAPE 8 to 15% on a 30-day horizon3 to 6 weeks from historical data
    Recommendation engine10 to 25% CTR lift vs baseline in an A/B test4 to 8 weeks including A/B setup
    Fraud / anomaly detectionPrecision 90%+ at agreed recall threshold3 to 5 weeks from labelled transaction data
    LLM fine-tune (QLoRA)Task-specific accuracy 15 to 30% over base model2 to 4 weeks from instruction dataset

    Where it runs

    Industries and use cases

    Domain-adapted training experience across these industries means faster ramp-up and higher baseline accuracy on your data.

    Pricing

    Hiring models and pricing

    Transparent pricing. Fixed-price projects where possible. All engagements start with a free 30-minute discovery call and a written spec before any billing.

    Proof of concept

    $1,500 to $3,500
    one time

    Baseline model plus evaluation report. Answers the question: will this work on our data?

    Project-based

    $3,000 to $20,000
    fixed price, per scope

    Scoped deliverable: model plus API plus documentation plus 30 days of support, milestone-based billing.

    Most popular

    Dedicated ML developer

    $4,000 to $10,000
    per month, by hours

    Set weekly hours, sprint-based delivery, direct access, priority availability.

    Hourly consulting

    $75 to $150
    per hour

    Architecture reviews, model audits, technical advisory. Useful before committing to a build.

    Why a freelance ML developer from India

    Senior ML expertise at 40 to 60% lower cost than US and UK rates, with direct communication, full English proficiency, and overlap with European and US business hours. No agency markup.

    How it gets built

    Process for building machine learning solutions

    A structured development process, including data analysis, model training, and performance optimisation, built to create scalable, production-ready AI systems that generate measurable business impact.

    PHASE 01days 1 to 2

    Discovery

    +
    I review your business problem, success metrics, and available data. You receive a written technical spec before any code is written, with clear scope, timeline, and milestone payments from the start.
    PHASE 02the decisive one

    Data audit and preparation

    +
    I assess data quality, volume, and labelling completeness, then build preprocessing pipelines: cleaning, normalisation, feature engineering, class balancing. Data issues are surfaced here, not after training has already been paid for.
    PHASE 0348 hours in

    Architecture selection and baseline

    +
    I select the right model type and run a baseline experiment within 48 hours of data readiness. You see a concrete benchmark before the full training run and full billing begins.
    PHASE 04iterated to target

    Training, optimisation, and evaluation

    +
    Full training with hyperparameter optimisation using Optuna or Ray Tune. Results delivered with precision, recall, F1, and AUC on held-out test sets. I iterate until production targets are met.
    PHASE 05handoff

    Deployment and integration

    +
    Model served as a versioned REST API (FastAPI plus Docker), deployed to your chosen infrastructure: AWS SageMaker, GCP Vertex AI, Azure ML, or on-prem, with full integration documentation.
    PHASE 0630 days plus

    Monitoring, drift detection, and support

    +
    30-day post-launch support window included. Drift monitoring and automated retraining pipelines set up so model accuracy stays stable as real-world data evolves, the same pattern shown in the demo at the top of this page.

    Tooling

    Technologies used in machine learning development

    Advanced ML frameworks, MLOps tools, and cloud platforms, selected per project to build high-performance models that deliver accurate predictions and real business value.

    TensorFlow
    PyTorch
    Scikit-Learn
    XGBoost
    MLflow
    Optuna
    Ray Tune
    CI/CD pipelines
    NVIDIA
    Meta
    Hugging Face Transformers
    Microsoft
    Mistral AI
    Google OCR
    FastAPI
    Docker
    AWS SageMaker
    GCP Vertex AI
    Azure ML
    AWS
    Azure
    Google Cloud
    Huawei Cloud
    Genesis Cloud
    TensorWave

    Features

    Why work with Shreyans Padmani

    Building machine learning solutions that turn data into useful insights and support smarter business decisions.

    ML

    Custom ML models

    Every dataset is different, so I build machine learning models tailored to your data and business goals, ensuring reliable and meaningful results.

    PA

    Predictive analytics

    Systems that analyze patterns in your data to predict trends, automate decisions, and help improve planning and efficiency.

    IN

    Seamless integration

    Machine learning solutions are designed to fit into your existing software and workflows, making adoption simple and practical.

    About

    Freelance ML engineer

    Shreyans Padmani

    I am an independent machine learning engineer and AI developer with 5+ years building and shipping production ML systems for companies in SaaS, healthcare, fintech, ecommerce, and manufacturing. I have worked across the full ML lifecycle: from raw data through to monitored, continuously improving production models.

    Every client I work with gets direct access to me: the engineer who scopes, builds, and deploys their model. No account managers, no outsourcing, no junior developers doing the actual work. This is the core advantage of hiring a freelance ML developer over an agency.

    100% Upwork JSSMicrosoft AI Certified12 case studies5+ years

    FAQ

    Frequently asked questions: hiring a freelance machine learning developer

    What is the difference between a machine learning developer and a machine learning engineer?
    The terms are used interchangeably in most job postings. In practice, an ML developer focuses on building ML-powered products and APIs, while an ML engineer focuses on training pipelines, model infrastructure, and MLOps. As a freelance ML developer and engineer, I handle both: I design the model and ship the production system.
    How much does it cost to hire a machine learning developer?
    Rates vary by scope, specialisation, and location. Senior freelance ML engineers based in the US or UK typically charge $120 to $200 per hour. Senior freelance ML engineers based in India, like me, charge $60 to $150 per hour for equivalent seniority and production experience. Project-based engagements start at $1,500 for a proof-of-concept and range to $20,000 and above for full production deployments. Contact me for a fixed-price estimate based on your requirements.
    How do I hire a dedicated machine learning developer?
    A dedicated ML developer engagement means I commit a fixed number of hours per week to your project on a monthly retainer basis, working within your sprint cycle and available on Slack or video call. This model suits teams with an ongoing ML roadmap. Dedicated engagements typically start at $4,000 per month depending on hours. Contact me to discuss a dedicated arrangement.
    Can you build ML for web applications?
    Yes. I build REST APIs that serve real-time ML predictions to web front-ends, recommendation engines for web platforms, and intelligent search and ranking systems. Models are containerised with Docker, deployed to AWS, GCP, or Azure, and served with sub-100ms latency targets where required.
    Can you build ML for mobile applications?
    Yes. For on-device inference, I build lightweight models exported to TensorFlow Lite for Android or Core ML for iOS. For heavier inference tasks, I deploy cloud-based ML APIs that the mobile app calls. I can advise on the right split between on-device and cloud-based inference for your latency, privacy, and accuracy requirements.
    How long does a machine learning project take?
    A proof-of-concept with an evaluation report takes 1 to 2 weeks from data readiness. A full production deployment takes 4 to 12 weeks depending on data complexity, model type, and integration scope. Longer timelines almost always trace back to data readiness, not model development, which is why the discovery phase surfaces data issues before billing begins.
    Do you sign NDAs and data processing agreements?
    Yes. I sign NDAs as standard before any data is shared. For healthcare or fintech clients I can work within HIPAA-aligned or GDPR-aligned data handling arrangements. Training runs can be executed entirely within your cloud infrastructure so data never leaves your environment.
    What happens to the model after the project ends?
    You own all code, model weights, training scripts, and documentation outright. There are no licensing fees or ongoing payments owed after the engagement. I provide a 30-day support window post-launch and offer optional retained arrangements for retraining and ongoing improvement.
    Why hire a freelance ML developer instead of an ML agency?
    With a freelance ML developer, the person you speak to is the person who builds your model. No account manager relay, no allocated junior, no agency markup on the engineering hours. You get senior-level work at lower total cost with faster iteration cycles.
    Can you improve an existing ML model that is underperforming?
    Yes. Model audit engagements are a common request. I review your existing model code, training data, feature engineering, and evaluation methodology, identify the root cause of underperformance, and deliver a written improvement plan. If the fix requires retraining, I scope that as a separate engagement.

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    Shreyansh Padmani

    Building scalable apps & tech roadmaps for growing businesses.

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