Explore 4 junior python developer jobs from 2 hiring companies in Marion, AR, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Junior Python Developer Jobs

St. Jude Children's Research Hospital

ALSAC

Crew Training International

Onsite

Remote

<p><b>PURPOSE OF POSITION</b></p>

<p>Assist with model integration, data pipelines, retrieval infrastructure, and the engineering scaffolding required to ship reliable, secure, and cost-effective Artificial Intelligence (AI) features. This role ensures the delivery of production-grade Large Language Model (LLM) systems that meet real-world demands for performance, cost-efficiency, and governance.</p>

<p><b>MINIMUM QUALIFICATIONS</b></p>

<p><b>Education:</b>  Bachelor’s Degree in Computer Science, Data Science, AI, or related field is preferred, but not required. Equivalent practical experience, including boot camps, certifications, or self-directed learning, is also valued.</p>

<p><b>Training and Experience:</b>  0–2 years of professional experience in software development, data engineering, machine learning, or backend development.</p>

<p><b>General Skills:</b>  Must have strong software engineering fundamentals and a deep understanding of working with LLMs in production environments. The ideal candidate brings hands-on experience with Python and modern data tooling and is comfortable building robust pipelines that connect unstructured content, structured data, and retrieval systems to power context-aware LLM workflows. You should demonstrate fluency in the design and reasoning of data movement processes, including ingestion, preprocessing, vector indexing, and query generation. Experience working with both open-weight and API-based large language models is also essential. This role requires a practical mindset, a strong command of SQL and retrieval strategies over relational data, and the ability to experiment, evaluate, and iterate toward scalable, cost-effective, and trustworthy AI features. </p>

<p><b>Required Skills:</b></p>

<ul>
	<li>Proficiency in Python, including experience with modern practices in structuring, testing, and maintaining codebases.</li>
</ul>

<ul>
	<li>Experience with Retrieval-Augmented Generation (RAG) systems, including document chunking, embedding, vector search, and grounded context construction.</li>
</ul>

<ul>
	<li>Hands-on experience with PostgreSQL and pgvector, including schema design and structured retrieval over relational data.</li>
</ul>

<ul>
	<li>Strong familiarity with SQL query generation, particularly in the context of semantic or hybrid retrieval.</li>
</ul>

<ul>
	<li>Experience integrating and orchestrating LLMs, with a focus on prompt templating, tool usage, and response parsing.</li>
</ul>

<ul>
	<li>Familiarity with Google ADK or equivalent frameworks for LLM scaffolding and orchestration.</li>
</ul>

<ul>
	<li>Comfort working with unstructured and structured data, including ingestion from PDFs, DOCX, Markdown, HTML, and APIs.</li>
</ul>

<ul>
	<li>Experience deploying and debugging LLM systems, including containerization (Docker), API-based LLM integration (e.g., Ollama or vLLM), and environment configuration.</li>
</ul>

<p><b>Preferred Skills</b></p>

<ul>
	<li>Experience with graph-enhanced retrieval, using tools like Neo4j or ArangoDB, and an understanding of when and how to apply knowledge graphs to improve LLM grounding.</li>
</ul>

<ul>
	<li>Knowledge of model adaptation techniques, including LoRA, QLoRA, or PEFT approaches for fine-tuning or personalization.</li>
</ul>

<ul>
	<li>Familiarity with prompt optimization strategies, including prompt evaluation and failure case analysis.</li>
</ul>

<ul>
	<li>Basic understanding of hybrid search and reranking pipelines, such as ColBERT, BGE rerankers, or commercial tools like Cohere Rerank.</li>
</ul>

<ul>
	<li>Experience with infrastructure optimizations, such as autoscaling (KEDA, HPA), Redis caching layers, or efficient streaming and batching.</li>
</ul>

<ul>
	<li>Familiarity with safe deployment practices, including prompt injection mitigation and handling of sensitive or regulated data.</li>
</ul>

<p><b>Clearance:</b>  Must be able to obtain/maintain a Secret clearance.  Prefer holds an active Secret clearance.</p>

<p><b>DUTIES &amp; RESPONSIBILITIES</b></p>

<ul>
	<li>Design and implement end-to-end RAG architectures, including document ingestion, chunking, embedding generation, vector indexing, query planning, retrieval, and response synthesis.</li>
</ul>

<ul>
	<li>Evaluate and integrate LLMs, embedding models, and vector databases to support efficient and accurate retrieval and generation.</li>
</ul>

<ul>
	<li>Design and implement scaffolding and orchestration around LLMs, including prompt templating, tool invocation, evaluation harnesses, and safety guards.</li>
</ul>

<ul>
	<li>Develop data processing pipelines for structured and unstructured content (PDF, DOCX, HTML, Markdown, databases, APIs); implement normalization, deduplication, PII redaction, and metadata enrichment.</li>
</ul>

<ul>
	<li>Implement and optimize retrieval strategies and context construction (citation, source attribution, grounding).</li>
</ul>

<ul>
	<li>Adapt retrieval and embedding strategies to domain-specific taxonomies, ontologies, or structured schemas; support contextual retrieval from hierarchical or relational sources.</li>
</ul>

<ul>
	<li>Productionize LLM-based systems: containerize components (Docker), deploy orchestration via Kubernetes or serverless platforms, implement observability (OpenTelemetry, logging, tracing), and manage configuration.</li>
</ul>

<ul>
	<li>Measure and improve quality: define offline and online evals, golden datasets, A/B tests, hallucination detection, toxicity filters, and guardrails.</li>
</ul>

<ul>
	<li>Optimize performance and cost: batching, caching, streaming, and efficient context management.</li>
</ul>

<ul>
	<li>Implement security, privacy, and compliance best practices including access controls, injection defense, and safe data handling.</li>
</ul>

<ul>
	<li>Develop solutions that can run entirely on-premise or in air-gapped environments, prioritizing data sovereignty and privacy.</li>
</ul>

<ul>
	<li>Various other duties in direct support of accomplishment of primary duties listed.</li>
</ul>

<p><b>SUPERVISORY/MANAGEMENT RESPONSIBILITY</b></p>

<p>None</p>

Junior AI Developer

0–2 years in software development or data engineering; strong Python; experience with RAG, PostgreSQL/pgvector; LLM tooling; able to obtain Secret clearance.

<h1><span class="emphasis-3"><b><b><span><span class="WA02">At ALSAC you</span></span> do more than make a living; you make a difference.</b></b></span></h1><p style="text-align:inherit"></p><div><div><div><div><h2><b><i>We like people who are different…because we’re different, too. As one of the world’s most iconic and respected nonprofits, we know what it’s like to stand out. That’s why we’re looking at you. Your background, perspective, and desire to make an impact set you apart. As we work to help St. Jude cure childhood cancer, we&#39;re calling on the game-changers, innovators and visionaries to join our family. Not just for the kids of St. Jude, but also for you. Because at ALSAC, we develop and celebrate our employees. So, bring your whole, authentic self and become part of our shared mission: Finding cures. Saving children.®</i></b></h2></div></div></div></div><p style="text-align:inherit"></p><h2><u>Job Description</u></h2><div><p>The <b>Data Engineer III (Information Architecture)</b> designs, builds, and maintains the data infrastructure that powers analytics, reporting, and decision‑making across the organization. This role owns end‑to‑end data pipelines—from ingestion through modeling and delivery—and partners closely with analytics, product, and business stakeholders.</p><p>You’ll have the opportunity to shape data platform standards, mentor other engineers, and deliver high‑impact solutions that directly support a mission‑driven organization. If you enjoy solving complex data problems at scale and want your work to make a meaningful difference, this role offers both technical challenge and purpose.</p><p></p><h2>What You’ll Do</h2><p></p><h3>Core Responsibilities</h3><ul><li>Design, build, and maintain scalable, optimized data pipelines that support business intelligence and analytics use cases.</li><li>Partner with Enterprise, Solution, Technical Architecture, and Infrastructure teams to evolve data platform architecture.</li><li>Perform conceptual and logical data modeling to assemble data sets of varying size and complexity.</li><li>Develop and manage ETL/ELT processes using AWS and SQL-based technologies.</li><li>Implement analytical solutions that generate actionable insights into operational efficiency, donor acquisition, and key business metrics.</li><li>Collaborate with data, product, design, and executive stakeholders to support data needs and resolve technical issues.</li><li>Serve as a technical lead for Data Engineer I and II teammates by coaching, mentoring, and reinforcing best practices.</li><li>Conduct testing and root cause analysis to troubleshoot data quality, performance, and integration issues.</li><li>Provide structured and ad‑hoc knowledge sharing and documentation across teams.</li></ul><h2>Data Platform &amp; Governance Support</h2><ul><li>Support data access configuration, integrations, and onboarding standards.</li><li>Partner with governance and security teams to enable data cataloging, lineage, and discovery (e.g., Alation or similar tools).</li><li>Assist with administration and configuration of data platform tools, including access management and integrations.</li></ul><p></p><h2>Technical Skills &amp; Experience</h2><h3>Required Experience</h3><ul><li>Strong proficiency in SQL for development and analysis.</li><li>Hands‑on experience building and optimizing large‑scale data pipelines and architectures.</li><li>Solid understanding of dimensional data modeling and data warehousing concepts.</li><li>Experience sourcing and integrating complex data from multiple systems into a data lake or enterprise data platform.</li><li>Strong analytical and problem‑solving skills, including root cause analysis of data and processes.</li><li>Ability to design processes supporting data transformation, orchestration, dependency management, and metadata.</li></ul><p></p><h3>Cloud, Tools &amp; Technologies</h3><ul><li>AWS data services including S3, Lambda, Glue, Athena, Redshift, RDS, EMR, EC2, and VPC configurations.</li><li>API and integration experience using tools such as AWS Lambda, Mulesoft, SSIS, or Confluent.</li><li>Workflow and orchestration tools such as Airflow, Luigi, or Azkaban.</li><li>Stream processing and big data technologies including Kafka, Spark, Spark Streaming, and Kafka Streams.</li><li>Relational and NoSQL databases such as SQL Server, MongoDB, and DynamoDB.</li><li>Experience with CI/CD and DevOps practices, including database source control and deployments (Liquibase, DB Up, SSDT).</li><li>Programming experience in Python, Java, Scala, or C&#43;&#43;.</li></ul><p></p><h3>Security &amp; Observability</h3><ul><li>Security‑minded approach with experience building compliance‑aware applications.</li><li>Familiarity with data observability and metadata platforms supporting discovery, lineage, and stewardship.</li><li>Experience partnering with security, platform, and governance teams to support standards and adoption.</li></ul><p></p><h2>Leadership Expectations</h2><ul><li>Acts as a technical lead and mentor for junior engineers.</li><li>Contributes to defining best practices, SOPs, and target‑state architecture.</li><li>Influences data engineering standards across the organization.</li></ul><p></p><h2>Education &amp; Experience</h2><ul><li>Bachelor’s degree in Engineering, Information Technology, or a related field plus 5–8 years of relevant experience.</li><li>Master’s degree preferred, especially with experience partnering directly with executive and cross‑functional stakeholders.</li></ul></div><p></p><p></p><p></p><h1><b><span class="emphasis-2"><u>Benefits &amp; Perks</u></span></b></h1><h2><i>The following Benefits &amp; Perks apply to<b> </b><u>Full-Time Roles </u><u>Only<b>.</b></u></i></h2><h2><i><span>We’re dedicated to ensuring children and their families have every opportunity to enjoy life’s special moments. We’re also committed to giving our staff excellent benefits so they can do the same. </span></i></h2><h2></h2><ul><li>Core Medical Coverage: (low cost low deductible Medical, Dental, and Vison Insurance plans)​</li><li>401K Retirement Plan with 7% Employer Contribution</li><li>Exceptional Paid Time Off</li><li>Maternity / Paternity Leave</li><li>Infertility Treatment Program</li><li>Adoption Assistance</li><li>Education Assistance</li><li>Enterprise Learning and Development</li><li><a target="_blank" href="https://nam12.safelinks.protection.outlook.com/?url&#61;https%3A%2F%2Fwww.stjude.org%2Fjobs%2Falsac%2Falsac-st-jude-benefits.html&amp;data&#61;04%7C01%7CAttamara.Hayes%40alsac.stjude.org%7C160dbcde9b3c44d0e4a108da1657cb2a%7C62a96f9aa5614bfba97870a73a08dc02%7C0%7C0%7C637846863576928938%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata&#61;LFjbNVRcBHCh1JaJ7PAxxgl6d0fYMZ0uKkRgZz%2FSYrQ%3D&amp;reserved&#61;0"><span>And more</span></a></li></ul><p style="text-align:inherit"></p><p style="text-align:left"><b><span>ALSAC is an equal employment opportunity employer. </span></b></p><p style="text-align:left"><span><span>ALSAC does not discriminate against any individual with regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity, transgender status, disability, veteran status, genetic information or other protected status.</span></span></p><p style="text-align:inherit"></p><p style="text-align:left"><b><span>No Search Firms:</span></b></p><p style="text-align:inherit"></p><p style="text-align:left"><span>ALSAC does not accept unsolicited assistance from search firms for employment opportunities.  All resumes submitted by search firms to any ALSAC employee or ALSAC representative via email, the internet or in any form and/or method without being contacted and approved by our Employee Experience team and without a valid written search agreement in place will result in no fee being paid if a referred candidate is hired by ALSAC.</span></p>

Data Engineer III - (Information Architecture) (Memphis, TN or Remote in USA)

Data Engineer III

Design, build, and maintain scalable data pipelines; model data; implement ETL/ELT; collaborate with stakeholders; mentor juniors.

A data science postdoctoral research associate position is available in the lab of Dr. Christian Meyer<h2></h2><p style="text-align:inherit"></p><p>Ideal candidates will have:<br />•    A Ph.D. in bioinformatics, computational biology, mathematics, biomedical engineering, or a related field. <br />•    Experience with coding software such as Python, R, or Matlab.<br />•    Familiarity with collaborative coding software such as GitHub and database management.<br />•    An ambition to make major contributions to the field of systems pharmacology by driving an independent research project<br />•    Strong communication skills and a desire to work in a team-oriented, interdisciplinary environment<br />This position offers access to state-of-the-art computation resources available at St. Jude (HPC environment with 5.3 PFLOPS of power and 150 PB of storage capacity, link 1 below). St. Jude offers highly competitive salaries (typically 20–25% above NIH guidelines) in a low-cost-of-living city, along with comprehensive benefits and robust support for professional development. For more information on living in Memphis, visit St. Jude’s Visiting Memphis webpage (link 2 below).  This position is full-time, in person at the main campus in Memphis, TN.<br />To apply, please send a cover letter describing your research interests and career goals, your CV, and contact information for 3 references to Dr. Christian Meyer at Christian.meyer&#64;stjude.org.</p><p></p><p>Link 1: <a href="http://www.stjude.org/research/why-st-jude/data-tools/research-computing/research-computing-resources.html" target="_blank">www.stjude.org/research/why-st-jude/data-tools/research-computing/research-computing-resources.html</a></p><p><br />Link 2:  <a href="http://www.stjude.org/care-treatment/patient-families/campus-information/visit-memphis.html" target="_blank">www.stjude.org/care-treatment/patient-families/campus-information/visit-memphis.html</a></p><p></p><p>The Meyer Lab in the Department of Pharmacy and Pharmaceutical Sciences at St. Jude Children’s Research Hospital is currently recruiting a Postdoctoral Researcher to join our team in reimagining how we discover and deploy drug combinations in the clinic. </p><p></p><p>Our work is highly interdisciplinary, integrating big data analysis, state-of-the-art machine learning models, mathematical modeling, and systems biology to elucidate the mechanisms of drug interactions in complex biological systems, with a particular focus on infectious disease and cancer.</p><p>Candidates with experience in developing machine learning or mathematical models are particularly encouraged to apply. We are seeking highly motivated, creative scientists who are willing to take intellectual risks to shape the future of combination therapy, thereby contributing to the institution’s goal of developing cures for catastrophic childhood diseases.</p><p></p><p>Relevant Publications:</p><p>Meyer CT, et al. Nature Microbiology. 2023. (<a href="https://www.nature.com/articles/s41564-023-01513-9" target="_blank">link</a>)<br />Meyer CT, et al. PNAS. 2024. (<a href="https://www.pnas.org/doi/10.1073/pnas.2408889121" target="_blank">link</a>)<br />Wooten DJ, Meyer CT, et al. Nature Communications. 2021. (<a href="https://www.nature.com/articles/s41467-021-24789-z" target="_blank">link</a>)</p><h2></h2><div><p></p><p><a href="https://www.stjude.org/jobs/hospital/workplace-policies.html" target="_blank">St. Jude is an Equal Opportunity Employer</a></p><p></p></div><p><span><b>No Search Firms</b></span></p><p>St. Jude Children&#39;s Research Hospital does not accept unsolicited assistance from search firms for employment opportunities. Please do not call or email. All resumes submitted by search firms to any employee or other representative at St. Jude via email, the internet or in any form and/or method without a valid written search agreement in place and approved by HR will result in no fee being paid in the event the candidate is hired by St. Jude.</p>

Postdoctoral Research Associate (Data Scientist) - Meyer Lab

Postdoctoral Research Associate

PhD in bioinformatics, computational biology, mathematics, biomedical engineering, or related field; experience with Python, R, or Matlab; familiarity with GitHub and database management; ability to lead independent projects; strong collaboration and communication skills.

A Postdoctoral Research Associate position is available in the laboratory of Dr. Yuuta Imoto in the Department of Developmental Neurobiology at St. Jude Children’s Research Hospital.<h2></h2><p style="text-align:inherit"></p><p>The Imoto lab uses super-resolution microscopy and electron-microscopy to investigate rapid synaptic organelle dynamics during neurotransmission. The Fellow will design and conduct experiments aimed at identifying molecular mechanisms by which endocytic structures remove damaged proteins in human physiology and neurodegenerative disorders.</p><p>Successful candidates will have:</p><ul><li><p>A PhD in cell biology, neuroscience, or related discipline</p></li><li><p>The ability to independently design and execute experiments and interpret data</p></li><li><p>Expertise in at least one of the following areas:</p><ul><li><p>Super-resolution imaging, including Stimulated Emission Depletion (STED) and Stochastic Optical Reconstruction Microscopy (STORM)</p></li><li><p>Cryo-electron tomography</p></li><li><p>Imaging data science and AI-based analysis</p></li></ul></li><li><p>A strong record of contributions to peer-reviewed research publications.</p></li><li><p>Familiarity with programming languages such as MATLAB and Python, and the ability to work with large imaging datasets</p></li><li><p>Excellent communication and presentation skills, with the ability to prepare high-quality manuscripts for publication</p></li></ul><p></p><p>St. Jude Children’s Research Hospital is a world-class research institution dedicated to pediatric cancer and other catastrophic diseases of childhood. The first and only National Cancer Institute (NCI)-designated Comprehensive Cancer Center devoted solely to children. Our 300 faculty work across the spectrum of basic, translational, clinical, and population science in a highly collaborative multidisciplinary environment that includes a Nobel laureate and members of the National Academy of Science and the National Academy of Medicine. St. Jude is ranked on Fortune Magazine’s “Best Workplaces in Health Care &amp; Biopharma” and Glassdoor’s “Best Places to Work,” and is located in the heart of Memphis, Tennessee, a vibrant and friendly city at the historic American crossroads of music, trade, food and culture.</p><p></p><p>We are in pursuit of the brightest minds in biomedical sciences, individuals poised to contribute to our research progress. Other than access to top-quality scientists and mentors, as a postdoctoral trainee at St. Jude, you will have:</p><ul><li><p><b>A Blend of Academic Freedom and Industrial Efficiency</b>: Access to shared resources and facilities led by expert scientists, coupled with cutting-edge technology, accelerates research productivity.</p></li></ul><ul><li><p><b>Customized Professional and Career Growth:</b> Experience specifically designed programs to enhance professional growth and career readiness empowering postdocs for success beyond their training. This includes access to grant writing workshops, individual development plans, teaching and mentoring opportunities, non-research career advancement programs, professional development allowance, and so much more.</p></li></ul><ul><li><p><b>Competitive Compensation:</b> Embark on your journey with a competitive salary starting at $72,500 a year, comprehensive benefits and generous relocation assistance, reflecting our commitment to recognize and invest in talent.</p></li></ul><p></p><p><b>A Sense of Community: </b>St. Jude fosters a vibrant postdoc community that supports a well-balanced life. A dynamic environment promotes connections and camaraderie among postdocs from all backgrounds.</p><p></p><h2></h2><div><p></p><p><a href="https://www.stjude.org/jobs/hospital/workplace-policies.html" target="_blank">St. Jude is an Equal Opportunity Employer</a></p><p></p></div><p><span><b>No Search Firms</b></span></p><p>St. Jude Children&#39;s Research Hospital does not accept unsolicited assistance from search firms for employment opportunities. Please do not call or email. All resumes submitted by search firms to any employee or other representative at St. Jude via email, the internet or in any form and/or method without a valid written search agreement in place and approved by HR will result in no fee being paid in the event the candidate is hired by St. Jude.</p>

Postdoctoral Research Associate -  Developmental Neurobiology

PhD in cell biology or neuroscience or related discipline; ability to design/execute experiments; expertise in super-resolution imaging (STED/STORM) or cryo-ET or imaging data science/AI; strong publication record; programming in MATLAB/Python; strong communication skills.

Junior Python Developer Jobs in Marion, AR, US

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