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Top Freelance SQL Experts for Hire

Faith A.

Spatial Data Scientist & Remote sesnisng Expert | 5+ years of experience in GIS research
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USD 50/hr
Bsc in GIS and remote sensing
Ghana

I am a spatial data scientist and consultant with experience supporting international research institutions and NGOs in fields such as biodiver...

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USD 50/hr
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Dr. Juan D.

Medical Data Scientist and Engineer| Clinical trials, Preclinical studies, Oncology, Cardiology, Big Data, Google Cloud
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USD 300/hr
Doctor of Philosophy
United Kingdom

I specialise in computational approaches to uncover insights from large mobile health datasets for cardiovascular risk assessment. I am also in...

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USD 300/hr
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Dr. Giovanni S.

Statistician | Biostatistics | Epidemiology | Evidence Synthesis | Real-World Evidence
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USD 50/hr
PhD
United Kingdom

Applied statistician and data scientist with 10+ years of experience in statistical modelling, epidemiology, and health data analysis. I work o...

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USD 50/hr
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Olawale T.

Freelance Computer Science Researcher | Local Optimization and MILP expert | Recent Background in Finance
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USD 50/hr
PHD
United Kingdom

PhD in combinatorial optimization techniques. Worked on generic optimization solver. Recently worked on software related to risk management at ...

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USD 50/hr
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Sean A.

Sean Adler: AI/ML Innovator, FinTech Founder, and Biotech Technologist with 8-figure Exit and Forbes Contributions
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USD 100/hr
Visual Computing
United States

Technical founder and CTO with expertise in AI/ML, regulated data systems, and enterprise solutions. Scaled a FinTech startup to an 8-figure ex...

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USD 100/hr
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Daniel S.

Data Scientist & Engineer | Python Developer | Multidisciplinary STEM & Finance Expert
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USD 15/hr
BSc Energy and Environmental Engineering
Kenya

I am a Data Scientist and Engineer with a multidisciplinary background bridging mechanical/electrical engineering physics, machine learning, an...

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USD 15/hr
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Dr. Luis T.

Data & AI Consultant | Generative AI & Data Engineering | PhD in Engineering
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USD 20/hr
MSc in Data Science
Colombia

Data & AI Consultant with 4+ years of experience delivering end-to-end solutions across data science, data engineering, and artificial inte...

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USD 20/hr
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Marc P.

Freelance Data Scientist | Biostatistician | MSc in Statistics for Data Science (UC3M)
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USD 35/hr
Bachelor in Statistics and Business
Spain

I am a freelance statistician specialized in the analysis of health-related research projects....I provide statistical support to researchers, physicians, and public health professionals, guiding model...

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USD 35/hr
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Ramya N.

Freelance Biostatistician & Data Analyst | Expert in R & SPSS
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USD 8/hr
MSc.
India

Biostatistician with expertise in statistical data analysis and interpretation.

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USD 8/hr
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Tomasz M.

RWE Statistical Programmer | SAS SQL R Python
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USD 70/hr
Master in Pharmacy
Poland

MPharm and Statistical Programmer with 7+ years of experience in SAS, SQL, R, and Python, specializing in Real-World Data (EHRs, claims, survey...

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USD 70/hr
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Dr. Kyle D.

Freelance Bioinformatician | Expert in Python & R
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USD 30/hr
Bachelor of Genetics (H1)
Australia

Final Year PhD Candidate and Bioinformatics Developer with expertise in Python, R, and high-performance computing (HPC) for large-scale biologi...

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USD 30/hr
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Dr. James B.

Data Science, Scientific Analytics & Technical Writing
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USD 100/hr
Ph.D Atmospheric Chemistry
United Kingdom

I specialise in extracting meaning from complex, high-dimensional scientific datasets — applying machine learning, source apportionment, and be...

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USD 100/hr
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Dr. Bukola A.

Molecular Microbiologist & Plant Biologist | 15+ Years in Pathogen Diagnostics, Antimicrobials & Regulatory Affa...
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USD 120/hr
Graduate Certificate, Regulatory Affairs (Science)
Canada

Dr. Bukola Rhoda Aremu is a PhD-level molecular microbiologist and plant biologist with over 15 years of research experience spanning plant-pat...

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USD 120/hr
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Dr. Orkhan R.

Geoscientist & Data Analyst | Petroleum Engineer with 3+ years of experience in a research institute
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USD 12/hr
Master of Philosophy- Geology
Azerbaijan

I am a Geoscientist and Data Analyst with a background in Petroleum Engineering and over 3 years of experience in a research institute, working...

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USD 12/hr
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Nour M.

Bioinformatics Researcher & MSc Scientist | Biomedical Data Analysis & Scientific Writing
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USD 8/hr
Bacholar degree
Egypt

I am a biomedical researcher with a Master's degree and 2–4 years of hands-on experience in bioinformatics and computational biology. My wo...

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USD 8/hr
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Paulo N.

Senior PhD Bioinformatician — clinical NGS pipelines, variant calling, RNA-seq, QC & cloud (15+ yrs)
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USD 130/hr
PhD
Canada

I help biotech, pharma, diagnostic, and research teams turn sequencing data into reliable, reproducible answers — delivering the whole pipeline...

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USD 130/hr
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Mehdi T.

AI Engineer | LLMs, Agentic AI, RAG Pipelines, MLOps & Scalable ML Systems
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USD 30/hr
focus: AI systems, LLMs, and applied machine learning
Saudi Arabia

AI Engineer and Researcher with 3+ years of experience building production-ready machine learning and Large Language Model (LLM) systems. My wo...

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USD 30/hr
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Monisha Priya T.

Data Scientist | Bioinformatics & Genomics Analyst | NGS | Metagenomics | Big Data | Data Analysis | Scientific Writ...
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USD 45/hr
MSc in Biotechnology (Integrated 5 years)
India

Bioinformatics and Microbial Genomics Specialist with over 4 years of experience in NGS data processing, metagenomics, and microbial genome ana...

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USD 45/hr
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Conner K.

Deep Tech Strategist | Product Innovation, Systems Engineering, and TCO/Techno-Economic Analysis
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USD 110/hr
BA Political Economy
United States

My work sits at the intersection of emerging technology, product development, and commercialization strategy. I support teams working with comp...

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USD 110/hr
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Yusuf U.

AI-Driven Cybersecurity Researcher | Adversarial ML · LLM Security · Penetration Testing | IEEE Author · ...
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USD 55/hr
Master in Cybersecurity
United States

I am a cybersecurity researcher and PhD candidate specializing in AI-driven threat detection, adversarial machine learning, and LLM security. M...

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USD 55/hr
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Dr. Dipanwita B.

PhD Researcher in Materials Science | Nanotechnology, Electrochemistry Expert | Scientific Writer | Research consultant
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USD 21/hr
PhD in Material Science
India

I am a PhD researcher in Materials Science with expertise in nanotechnology, electrochemical sensing, green synthesis of nanoparticles, environ...

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USD 21/hr
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Dr. Bongole G.

5+ years of Monitoring and Evaluation Specialist | Researcher | Program Management | Data Analyst
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USD 40/hr
Master of Public Health Monitoring and Evaluation
Uganda

Epidemiologist and monitoring and evaluation specialist based in Kampala, Uganda, with more than five years of applied experience across...disease surveillance, health systems, infection prevention and control, and the evaluation of large public...

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USD 40/hr
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Dr. Brandon H.

Machine Learning Scientist, PhD | Biomedical Signal & Image Analysis, EEG/MRI, Python & PyTorch
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USD 100/hr
PhD | Neuroscience
United States

I'm a machine learning scientist with a PhD in cognitive neuroscience and over a decade of experience turning noisy, high-dimensional biome...

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USD 100/hr
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Dr. Max L.

Research Software Engineer/Developer for Behavioural Research
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USD 80/hr
Ph.D., Experimental Psychology
United Kingdom

I design and build custom software and experiments for behavioural and psychological research in an academic context. I hold a PhD in Psycholog...

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USD 80/hr
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Stanly M.

Freelance Web & Mobile | Expert in AI automation | 7 + years
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USD 50/hr
BS in Computer Science
Egypt

Seasoned Freelance Web & Mobile Developer with 7+ years of experience delivering scalable digital solutions for startups, enterprises, and ...

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USD 50/hr
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Kolabtree is the leading online marketplace for SQL experts. Post your project, get bids, and hire qualified experts quickly and easily.

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We take several measures to help you work with full confidence and peace of mind.

Keep your project private

Restrict who can see your project and send you proposals. Invite only specific freelancers to view your project.

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Our T&C include a default confidentiality clause that protects your IP and NDA for added protection before disclosing project details.

Kolabtree ensures the safety and security of your payments, personal information and project details. Kolabtree’s T&C include a default confidentiality and NDA clause.

You will receive detailed proposals directly from Kolabtree. These proposals will include a comprehensive Statement of Work (SOW), project fees, milestones and deadlines.

You can choose to pay either a fixed or an hourly fee based on your scope of work. Pre-pay for the next milestone. You have to approve the deliverables only if the quality meets your expectations. If you aren't happy, we'll refund your money.

Kolabtree will share multiple quotations for your project. You have the freedom to accept the quote that aligns with your project requirement and budget. You can get in touch with us if you want to discuss the fee.

Our T&C include a default confidentiality clause that protects your IP and NDA for added protection.

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Speak directly with freelancers and explain your requirements.

100% satisfaction guaranteed

You have to approve the deliverables only if quality meets your expectations. If you aren't happy, we'll refund your money.

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Keep track of files and conversations in the user-friendly Workspace.

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Post your Project (Free)

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Get Quotes & Choose Experts

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3

Collaborate

Pre-pay for your project and work with the expert to get your desired output. Keep track of files and conversations in the user-friendly Workspace.

4

Job Done!

Approve the deliverables once you're satisfied with the job done.