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Narola Infotech

4.7

2156

10.0

97%

Surat, India

$15 USD per hour

⭐ Top 1% on Freelancer.com | Narola Infotech - Digitalising Businesses Since 2005 ✎ About Us We are Narola Infotech, a globally recognized IT solutions company with 20+ years of experience delivering high-performance web, mobile, and enterprise software solutions to 1500+ happy clients across 50+ countries. Trusted by Fortune companies like CGI, L&T, Infosys, Biocon, and TVSNext. We don't just build software, we build lasting partnerships. Our approach is simple: understand your vision, deliver beyond expectations, and stay with you every step of the way. ✎ Why Choose Us? ➬ 20+ Years of Industry Experience ➬ 350+ Talented IT Professionals ➬ 3000+ Successfully Delivered Projects ➬ 95% Client Retention Ratio ➬ 4.9 ⭐ Clutch Rating ➬ 100% Project Success Ratio ➬ Clutch Top 1000 Companies Global 2022 ➬ Best Outsourcing Company - SGCCI ✎ Our Services ➬ Custom Web & Mobile App Development ➬ Custom Enterprise Software Development ➬ AI/ML & Data Analytics Solutions ➬ QA & Software Testing (Automation, Security, Performance) ➬ DevOps, Cloud Migration & Managed Services ➬ Salesforce Consulting, Implementation & Support ➬ Staff Augmentation - Dedicated Teams or Individual Developers ➬ Support & Maintenance ✎ Tech Stack ➬ Frontend: ReactJS, AngularJS, VueJS, NextJS, NuxtJS ➬ Backend: Node.js, Java, PHP, Laravel, .NET, Python, Django, WordPress ➬ Mobile: Flutter, React Native, iOS (Swift), Android (Java/Kotlin) ➬ Cloud & DevOps: AWS, Azure, Docker, Kubernetes, Jenkins, CI/CD, Terraform ➬ Database: MySQL, MongoDB, PostgreSQL, Firebase, MS-SQL ➬ Other: Salesforce, MS Dynamics 365, Power Platform, Big Data, AI/ML, Automation ✎ Industries We Serve ● Fintech ● Healthcare ● Retail & Ecommerce ● Education ● Real Estate ● Media & Entertainment ●Transport & Logistics ✎ Our Strengths ➬ Agile Development Methodology ➬ Daily & Weekly Progress Reports ➬ Clear Communication & Collaboration ➬ 100% Plagiarism-Free & Secure Delivery ➬ Guaranteed Data Privacy & NDA Protection ➬ Flexible Engagement Models: ● Fixed Cost ● Time & Material (Hourly) ● Dedicated Team ● Hybrid Model (Fixed + Hourly) ✎ Our Promise "You will get the value of every penny you spend. We are committed to driving your business forward with reliable, quality solutions powered by technology and innovation." - Ashish Narola, CEO

RLHF PHP ASP Java JSP

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Antony N.

4.8

404

7.4

97%

NAIROBI, Kenya

$20 USD per hour

Delivering High-ACADEMIC RESEARCH & WRITING for Academic Success With a PhD in BOT Management and Master's degrees in both Business Management and Medicine, I specialize in delivering meticulous academic research and writing across diverse disciplines. My academic expertise ensures that every paper, thesis, dissertation, or assignment is grounded in thorough research, adheres to academic standards, and showcases critical thinking, all while being clear and well-structured. Academic & Professional Expertise ✅ PhD in Business Management | ✅Master’s in Business Management | ✅ Master’s in Medicine ✅ Specialized in Academic Writing, Research, and Editing Leveraging my diverse academic background, I bridge complex topics from business management to medicine, creating scholarly content that meets the highest academic standards. Core Specializations & Skills ✔ Academic Research & Writing I provide comprehensive academic research services, from gathering data to structuring and writing complex papers that are well-supported by credible sources and aligned with academic expectations. ✔ Business Management Research Whether it's organizational theory, market analysis, or strategic planning, I specialize in crafting research papers that analyze business concepts with clarity and depth. ✔ Medical Research & Writing With a deep understanding of medical topics, I produce well-researched, evidence-based assignments that follow the latest medical research and academic standards. ✔ Dissertations & Thesis Writing Guiding PhD candidates and Master’s students through the research and writing process, ensuring clarity, coherence, and scholarly rigor in long-form academic work. ✔ Editing & Proofreading I offer comprehensive editing services, ensuring your work is polished, free from errors, and adheres to academic citation styles like APA, MLA, and Chicago. Why Work with Me ✅ Research Excellence – I bring deep expertise in academic research, ensuring that each paper is well-researched, thoroughly analyzed, and properly cited. ✅ Tailored Writing Solutions – I craft assignments that align with your field of study and the specific requirements of your program. ✅ Plagiarism-Free, Original Content – I guarantee original, plagiarism-free content, with proper citations and referencing. ✅ Critical Thinking & Clarity – My work is not only well-researched but also clearly written, presenting complex ideas in a simple, understandable format. ✅ Timely & Professional Delivery – I prioritize deadlines, delivering well-crafted, high-quality assignments on time, every time. Let’s Achieve Your Academic Goals Together!

RLHF PHP Website Design Graphic Design Translation

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The 'Core Techies'

4.7

205

8.5

94%

BIKANER, India

$15 USD per hour

Core Techies is a software development and AI engineering company helping startups and enterprises build scalable digital products, automation systems, AI-powered solutions, and SaaS platforms. Since 2013, we have successfully delivered 200+ projects across web applications, mobile apps, backend systems, enterprise software, workflow automation, and AI-powered products. Our expertise includes: 🚀 AI Agents & AI Applications Custom AI agents, conversational AI systems, RAG applications, LLM integrations, document intelligence, and business process automation. ⚡ Workflow Automation n8n, Make.com, Zapier, CRM automation, sales workflows, operational automation, lead management, customer support automation, and system integrations. 📱 Mobile App Development Flutter, Android, iOS, React Native, Firebase-powered applications, MVP development, and enterprise mobile solutions. 💻 Web & SaaS Development React, Next.js, Node.js, Python, Java, Spring Boot, custom SaaS platforms, admin dashboards, multi-tenant systems, and enterprise applications. 🔌 API & System Integrations CRM, ERP, payment gateways, third-party APIs, cloud services, communication platforms, and business system integrations. ☁️ Cloud & DevOps AWS, Google Cloud, Docker, Kubernetes, CI/CD, deployment automation, and scalable cloud infrastructure. Our team focuses on building practical solutions that improve operations, automate workflows, reduce manual effort, and help businesses scale efficiently. Whether you need an AI-powered product, SaaS platform, mobile application, automation workflow, or enterprise software solution, we can help transform your idea into a production-ready system.

RLHF Java JavaScript Python Website Design

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Prakash M.

5.0

4.9

100%

Mysore, India

$25 USD per hour

Experienced in Image Processing.Can handle AI/Deep Learning Projects Libraries that i have worked on - OpenCv, TensorFlow, PyTorch, SFML, Cairo, Dlib, Several unity libraries. Languages - C++, C#, .net, Python, Java, Javascript Framework: .net framework, asp.net for backend server, android, Qt Modelling Tools - Blender, Game Development, VR(Oculus), MR(Hololens), AR(Android Phone) : Unity 3D

RLHF Java JavaScript Python .NET

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MAE Assist Solutions

5.0

4.8

100%

Ruma, Serbia

$40 USD per hour

I’m a versatile professional with experience in software development, AI automation, digital operations, and engineering project coordination. I help businesses build digital products, automate workflows, manage technical projects, and improve operations through practical and scalable solutions. My experience combines technical problem-solving, project management, automation, and business operations to help clients move faster and achieve better results. Services I Can Help With: ✔ Web, Mobile & Desktop Application Support ✔ AI Automation & Workflow Solutions ✔ Data Scraping & Process Automation ✔ CRM Setup & Outreach Systems ✔ Project Coordination & Workflow Documentation ✔ Client Communication & Reporting Why Clients Work With Me: ✔ Clear and professional communication ✔ Reliable and detail-oriented work ✔ Fast turnaround and organized workflow ✔ Strong understanding of both technology and business operations ✔ Long-term support and collaboration mindset I believe successful projects come from strong communication, practical execution, and attention to detail. If you’re looking for someone who understands both technical systems and business operations, I’d be happy to work with you.

RLHF PHP C Programming Java JavaScript

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Dian R.

5.0

1.3

100%

Bekasi, Indonesia

$8 USD per hour

Detail-oriented and empathetic Virtual Assistant with a growing specialization in social media management for pediatric clinics and medical professionals. Based in Indonesia, I support clients remotely by providing reliable, organized, and tailored assistance to help streamline their daily operations and enhance their online presence. Professionally focused on: Social Media Management Content Creation & Scheduling Inbox & Calendar Management Basic Admin & Research Tasks Client Communication & Support If you're looking for someone dependable to support your business, handle your backend tasks, or elevate your brand visibility on social media, I bring a mix of creativity, precision, and professionalism to every project. I’m a fast learner who values clear communication and client satisfaction. Why Choose Me? Committed to delivering high-quality, timely results Warm yet professional approach to every task Comfortable with international and cross-cultural collaboration Let’s work together to grow your brand, build lasting connections, and make your business run more smoothly, so you can focus on what matters most!

RLHF Data Entry Excel Facebook Marketing Customer Support

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Alessio D.

5.0

1.8

100%

Vienna, Austria

$25 USD per hour

I help global teams communicate better in Italian, verify their credentials, and improve their language models, whether that's through product localization, brand-aligned copywriting, on-site document verification, or AI language quality. 10+ years delivering for Amazon, NVIDIA, Kaufland, Swarovski, GroupM (WPP). → SaaS & Product Teams: UX Writer for onboarding flows, microcopy, error messages. Clear, persuasive, converts. → Marketing & E-Commerce: Italian copywriter for campaigns, product descriptions, CTAs. Tone that resonates with your brand. → Globalization Teams: EN/DE→IT translation, MTPE, localization at enterprise scale. 2.5M+ words refined. CAT tools: Trados, Lokalise, Phrase. → Verification Agencies: On-site document verification in Austria (Vienna, Graz, Linz, Salzburg, etc). Geotagged photography, form completion, HR coordination, compliance documentation. Fluent German-Italian communication with local authorities and HR departments. → AI & ML Teams: RLHF annotation, LLM evaluation, prompt engineering. Improve Italian language model quality and alignment. → Marketing Agencies: Multilingual content strategy, terminology glossaries, style guide development. Scalable, consistent, on-brand. Why work with me: ✓ Native Italian | C2 German | C1 English | Vienna-based (Austria) ✓ MA Applied Linguistics + decade of cross-cultural strategy ✓ Proven with Fortune 500 (Amazon, NVIDIA) and fast-scaling companies ✓ Full tech stack: CAT tools, AI/NLP, UX best practices, photography (geotagged) ✓ On-site verification experience with international compliance standards ✓ Fast turnaround, detail-oriented, reliable Industries: SaaS, E-commerce, Marketing Tech, Life Sciences, Financial Services, AI/ML, Verification & Compliance 📩 Invite me to bid. Happy to discuss custom rates for retained work or recurring verification projects.

RLHF Translation Photography Word German Translator

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Kelvin O.

5.0

1.9

100%

KASARANI, United States

$40 USD per hour

Accomplished Energy Systems Engineer and AI Data Trainer with over 15 years of experience optimizing power distribution, enhancing grid resilience, and driving renewable integration. I demonstrate a unique ability to blend engineering expertise with advanced mathematical modeling, statistical inference, and data analysis. Proven success in applying theoretical concepts to real-world energy systems and AI technologies, with a strong foundation in theoretical and mathematical physics. I have spearheaded critical projects in grid modernization, automated energy monitoring, and renewable resource integration, helping reduce operational costs and improve energy reliability for millions of customers. My approach is rooted in strong technical analysis, data-driven decision-making, and seamless communication with both technical and non-technical stakeholders. Recognized as a strategic thinker and results-oriented leader, I am passionate about creating resilient, sustainable, and intelligent energy systems. Whether it’s building AI-powered tools for LLM training, performing grid audits, or ensuring regulatory compliance, I bring a commitment to excellence and a drive for innovation in every project I lead.

RLHF Project Management Electronics Electrical Engineering Quantum

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Clients rate our RLHF Specialists

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How to hire a great freelance RLHF Specialist

An RLHF specialist is a machine learning engineer who applies reinforcement learning from human feedback to align large language models and AI systems with human preferences, safety standards, and task-specific objectives. RLHF specialists design preference datasets, train reward models, and fine-tune base models using algorithms like PPO and DPO to produce outputs that are helpful, harmless, and honest. Hiring an RLHF expert is now a core requirement for any team building production-grade generative AI, conversational agents, or domain-specific assistants.

What an RLHF specialist actually delivers

Reinforcement learning from human feedback turns a raw pretrained model into a usable product. Without alignment, a base LLM can hallucinate, refuse reasonable requests, follow instructions inconsistently, or generate unsafe content. An RLHF consultant builds the pipeline that fixes these behaviors using ranked human comparisons, reward modeling, and policy optimization.

Concrete deliverables from a freelance RLHF specialist typically include preference data collection protocols, annotated comparison datasets, trained reward models, fine-tuned policy checkpoints, evaluation harnesses, and documentation of training hyperparameters and ablations. Many engagements also include red-teaming reports and safety evaluations that measure refusal rates, toxicity, and jailbreak resistance.

Core services and technical scope

RLHF work spans the full alignment stack, from data curation through model deployment. Buyers should expect a specialist to handle several of the following depending on project scope:

Supervised fine-tuning (SFT) on instruction datasets as the policy initialization step

Designing labeling rubrics and pairwise comparison interfaces for human annotators

Training reward models on preference data, including Bradley-Terry and regression-based approaches

Policy optimization using PPO, DPO, IPO, KTO, GRPO, or rejection sampling fine-tuning

Constitutional AI and RLAIF pipelines using model-generated preference signals

KL-divergence control, reward hacking detection, and reward model calibration

Evaluation across benchmarks like MT-Bench, AlpacaEval, HELM, and custom domain evals

Red-teaming, adversarial prompt testing, and safety classifier integration

Distillation of aligned models into smaller deployable variants

Tools, frameworks, and infrastructure

Strong RLHF freelancers work fluently with the open-source alignment ecosystem and large-scale GPU training infrastructure. Look for hands-on experience with:

Hugging Face TRL, TRLX, OpenRLHF, and trlX for PPO and DPO training loops

DeepSpeed, FSDP, and Accelerate for distributed training across multi-GPU clusters

PyTorch as the core framework, with vLLM or TGI for rollout generation

LoRA, QLoRA, and PEFT for parameter-efficient fine-tuning

Weights and Biases or MLflow for experiment tracking

Label Studio, Prodigy, or Surge AI workflows for human preference collection

Base models from the Llama, Mistral, Qwen, Gemma, and Phi families

Cloud GPU environments on AWS, GCP, Azure, or specialized providers like Lambda and CoreWeave

Industries and use cases

Demand for RLHF specialists comes from any organization shipping LLM-powered products. Common use cases include customer support copilots, coding assistants, medical and legal research tools, financial analysis agents, educational tutors, content moderation systems, and roleplay or creative writing applications. Enterprises in regulated sectors hire RLHF consultants specifically to enforce policy compliance, reduce hallucinations on proprietary documents, and align tone with brand voice.

Research labs and AI startups hire RLHF experts to build alignment pipelines from scratch, while established product teams typically need help fine-tuning open-weight models on domain preferences or migrating from prompt-engineering-only approaches to trained alignment.

How to evaluate RLHF candidates

RLHF sits at the intersection of reinforcement learning, NLP, and large-scale systems engineering, so credentials alone are not enough. Look at GitHub contributions to alignment libraries, published papers or blog posts on reward modeling, Hugging Face model cards showing trained checkpoints, and documented experiment write-ups demonstrating ablation rigor.

Strong portfolio markers include shipped fine-tuned models with reproducible training configs, evaluation reports comparing SFT versus DPO versus PPO outcomes, and evidence of debugging issues like reward hacking, mode collapse, or KL explosion. Sample interview questions clients can use:

Walk me through a full RLHF pipeline you have implemented end to end. What were the failure modes you encountered and how did you diagnose them?

When would you choose DPO over PPO, and what are the trade-offs in data efficiency, training stability, and final model quality?

How do you detect and prevent reward hacking during policy optimization?

How would you design a preference labeling rubric for a customer support assistant in a regulated industry?

What evaluation suite would you run before approving an aligned model for production deployment?

Why hire RLHF specialists on Freelancer.com

Freelancer.com gives you direct access to a global pool of machine learning engineers, alignment researchers, and applied scientists with verified RLHF experience. You can review portfolios, published work, ratings, and client reviews before shortlisting, and competitive bidding means you set the budget while qualified freelancers on Freelancer.com propose the approach. Whether you need a short engagement to fine-tune an open-weight model or a long-term alignment lead embedded with your team, the marketplace scale on Freelancer.com makes it practical to find the exact specialization you need, including reward modeling, red-teaming, or constitutional AI.

Post a project on Freelancer.com today and connect with skilled RLHF specialists ready to align your models with human preferences and ship production-ready AI.

What are the steps to hiring a freelance RLHF specialist?

Hiring an RLHF specialist is different from hiring a generalist ML engineer because the work depends heavily on your base model, data state, and alignment goals. A precise brief gets you bids from people who actually understand reward modeling and policy optimization, rather than generic LLM tinkerers. The process below walks through posting, reviewing, and awarding the project.

Step 1: Post your project on Freelancer.com

Your project post is the single biggest determinant of bid quality. A clear brief filters out generalists and attracts specialists who can speak directly to reward model architecture, KL control, and evaluation strategy. Head to the post project page to fill in the brief, scope, timeline, and budget before publishing the project for freelancers to bid on.

Specify the base model family and size (for example, Llama 3 8B, Mistral 7B, Qwen 2.5 14B)

State whether you have existing preference data, SFT data, or need help building a labeling pipeline

Name the alignment method you want to explore (DPO, PPO, KTO, RLAIF) or ask the freelancer to recommend one

Describe the target behavior, domain, and any safety or compliance constraints

List your compute environment and whether GPU infrastructure is provided or expected

Define success metrics — win rates against a baseline, eval benchmark scores, or human review pass rates

Step 2: Review bids from freelancers

Bids on an RLHF project are short technical proposals, not just price quotes. A strong bid will reference the specific algorithm choice for your scenario, raise questions about data quality or reward hacking risks, and propose a realistic phased timeline covering SFT, reward modeling, policy training, and evaluation. Use Freelancer.com chat to probe technical depth before shortlisting.

Look for bids that ask clarifying questions about preference data volume and labeling consistency

Check that the proposed approach matches your model size and compute budget

Confirm the freelancer references concrete tools — TRL, OpenRLHF, DeepSpeed, vLLM — rather than vague claims

Ask for sample model cards, training logs, or W&B reports from past RLHF projects

Verify they have a plan for evaluation beyond loss curves, including human or model-judge comparisons

Watch for unrealistic timelines that skip reward model validation or red-teaming

Step 3: Evaluate freelancers and award the project

Final selection combines proposal quality with profile evidence. For RLHF, consistency matters more than a single impressive demo — alignment work requires methodical experimentation, and you want someone who has shipped multiple aligned models, not just one. Review portfolios for reproducibility and rigor.

Examine portfolio depth: multiple fine-tuned models, published configs, or open-source contributions to alignment libraries

Check star ratings, the volume of completed projects, and written reviews from past ML clients

Confirm verified payment method, completion rate, and on-time delivery rate on the profile

Read client reviews specifically for comments on debugging skills, communication, and documentation quality

Award the project and use Freelancer.com Milestone Payments to release funds at SFT completion, reward model validation, and final aligned checkpoint delivery

What is the difference between an RLHF specialist and a general machine learning engineer?

A general ML engineer covers a broad range of model types and tasks, while an RLHF specialist focuses specifically on aligning generative models using human preference data, reward modeling, and policy optimization algorithms. RLHF work requires deep familiarity with reinforcement learning theory, LLM training infrastructure, and human annotation workflows that most general ML engineers do not handle day to day.

Do I need RLHF if I am already using a fine-tuned LLM?

Supervised fine-tuning teaches a model what to imitate, but RLHF teaches it what to prefer when multiple plausible responses exist. If your model is consistently producing outputs that are technically correct but tonally wrong, unsafe, or misaligned with user intent, RLHF or DPO is usually the next step. For simpler use cases, a well-curated SFT dataset may be sufficient.

How long does an RLHF project take?

Timelines depend on data availability and model size. A DPO fine-tune on an existing preference dataset can be completed in one to three weeks, while a full RLHF pipeline including custom data collection, reward model training, and PPO optimization typically takes one to three months. Evaluation and iteration cycles often extend the engagement.

Can I hire an RLHF freelancer for a one-off project?

Yes. Many engagements are scoped as one-off fine-tuning projects, evaluation audits, or red-teaming exercises with clear deliverables. Freelancer.com supports both fixed-price contracts for defined scopes and hourly arrangements for ongoing alignment work.

What data do I need to provide for an RLHF engagement?

At minimum, you need representative prompts from your target use case. Preference data, ranked comparisons, or examples of desired versus undesired outputs accelerate the project significantly. If you do not have preference data yet, an RLHF specialist can design the collection protocol and supervise annotators as part of the engagement.