Backend Engineer
Replenish NutrAI
Backend Engineer — Clinical Data & API Integration Volunteer Role Replenish NutrAI is a menopause health intelligence platform. The full product includes a peer‑reviewed chatbot with traceable clinical citations, barcode scanning that validates supplements against published trial data, environmental intelligence, a personal supplement cabinet with clinical verdicts, drug interaction safety checks, and many more. We have a functional iOS app on TestFlight with this full experience. Our laser MVP, a peer‑reviewed chatbot with environmental intelligence and supplement scanning, is launching on World App. Our mission is to replace guesswork with evidence for the most underserved demographic in healthcare which is menopausal women. We're looking for a backend engineer to maintain our clinical validation engine and build new data pipelines. What You'll Be Doing Extending and improving a Python-based validation engine that compares supplement products against clinical trial data Integrating external health data APIs for drug‑supplement interaction checking Improving how our system matches product label ingredients to clinical database entries Cleaning and normalizing health product data (fixing unit formats, handling edge cases, validating schemas) Building API endpoints that our chatbot and frontend consume Working with structured health data including dosages, formulations, and published study references What We're Looking For Python experience (Pydantic, database libraries, environment management) Comfortable with PostgreSQL (queries, indexing, working with extensions) Experience consuming and integrating REST APIsAble to work with data pipelines (pulling, transforming, validating, and storing structured data) Comfortable reading and extending existing code rather than building from scratch Interest in health tech is a plus but not required Nice to Have Experience with vector databases Familiarity with Google Sheets API or similar data source integrations Any experience with clinical or health-related data This is currently a volunteer role with full intention of transitioning to a paid position contingent upon funding. We are a pre‑seed startup with a team of 12, actively pursuing grant funding through World App's developer programs. Full handoff documentation and an advisory engineer are available to get you up to speed quickly. Stack: Python, PostgreSQL, FastAPI, cloud‑hosted vector database #J-18808-Ljbffr
- ...General Catalyst, and In-Q-Tel. Role Summary You'll build the backend systems that power Twenty's cyber and electromagnetic... ...needs into robust product features. Collaborate with frontend engineers on API contracts and data structures that are efficient and usable...SuggestedFull timeWork at officeFlexible hours
Twenty
Washington DC16 days ago $180k - $240k
...headquartered in New York City, and widely recognized as the industry leader in CPS protection, in their search for a skilled Backend Engineer. As a Backend Engineer, you will design and implement high-quality features in the backend of a cybersecurity threat...SuggestedFull timeRemote workWorldwideWeekend workClearanceJobs
Washington DC3 days ago$80k - $210k
...foxhole, we operate at the layer where data becomes decisions, and decisions make the advantage. About The Role We’re seeking a Backend Software Engineer to build, maintain, and scale the core systems that support our AI‑driven logistics platform. In this foundational role,...SuggestedLocal areaGallatin AI, Inc.
Washington DC1 day ago- Speechify in Alexandria, Virginia, is seeking a talented Backend Developer to design and maintain APIs essential for their operations. This role demands proven experience in backend development using TS/Node, along with familiarity with GCP and cloud providers like AWS...Suggested
- Twenty Technologies is seeking an experienced backend engineer to build scalable Go services powering national-security focused cyber operations. You’ll model complex relationships in graph databases, design high‑performance APIs, and implement event‑driven architectures...Suggested
- Esri is looking for a Software Development Engineer II in Washington, DC, to design and develop scalable backend services for mission-critical geospatial applications. This role involves creating APIs and collaborating with teams to optimize system performance and reliability...Relocation package
- ...Catalyst, and In-Q-Tel. Role Summary You’ll design and build backend systems that turn real-time operational data into mission-... ...technical execution, and raise the bar through mentorship and engineering standards. You’ll partner closely with product, operations, and...Full timeWork at officeFlexible hours
Twenty
Arlington, VA16 days ago $86.4k - $176.2k
Accenture Federal Services in Arlington, Virginia is seeking a Software Engineer to develop robust APIs and backend microservices for operational AI applications. Your work will enhance enterprise AI governance and improve software delivery in a Hub-and-Spoke architecture...- Hopper is seeking a Senior Engineer to join their Lodging and Cars Supply team in Washington, DC. This role focuses on scaling a global hotel and cars ecosystem, executing technical integrations, and delivering reliable booking fulfillment. The ideal candidate has strong...
- BluJuniper is seeking a Senior Software Engineer to design and build backend systems for advanced applications. The role involves working with cloud-native architectures and ensuring robust service communication. You will primarily work with Go, focusing on creating scalable...Flexible hours
- Affirm is seeking a passionate software engineer for their Capital Orchestration team in Washington, D.C. This role involves building foundational platforms to reconcile transactions and ensuring Affirm has sufficient liquidity for loan origination and merchant payments...Remote job
- Twenty Technologies in Washington, D.C. is looking for a Backend Developer to build systems that support national security operations. You will develop scalable services in Go, focusing on handling operational data and improving decision-making. The ideal candidate has...Flexible hours
- Scribd, Inc. in Washington D.C. is seeking a Software Engineer to enhance core content systems. You will collaborate across teams to design and implement features that improve content upload, processing, and quality assurance. The ideal candidate should have over 4 years...Flexible hours
- ...modernizing enterprise law firms' deal processes through powerful backend infrastructure and cutting-edge AI integration. With over $1M... ...months, Series A funding, and an elite team of 20 (including 9 engineers), they’re now hiring Senior Backend Engineers to expand their...Immediate start
$80k - $120k
Join to apply for the Backend Software Engineer role at Guardian RF Guardian RF is building next-generation drone detection systems to protect critical infrastructure, national security, and public safety. Our passive RF-based platform provides real-time situational awareness...Full timeRemote work- A technology solutions company is seeking a Backend Developer to design and build scalable server-side applications for Federal Government programs. The ideal candidate will have extensive experience in backend programming, database design, and microservices architecture...Full time
- Ennoble First Inc. is seeking a Backend Software Engineer to support the development of core backend services for a critical data-driven application. The role demands expertise in Java or Python and RESTful APIs, with a strong focus on scalability within Linux environments...
- Brooksource is seeking a Software Engineer in Washington, DC to enhance the Oracle Customer Care & Billing platform. This contract-to-hire position involves backend development, operational support, and collaboration within an Agile environment. Required qualifications...Contract work
$50 per hour
A technology solutions provider is seeking a Mid Backend Java Developer to design and develop Java-based applications. The role involves maintaining Java/J2EE applications with a focus on REST/JSON and working in an Agile environment. The ideal candidate will have strong...Remote workAHON Solutions Inc.
Alexandria, VA4 days ago- A fintech startup is looking for a Staff Backend Engineer in Washington, DC, to lead the development of a financial services application. The position requires over 5 years of experience with web applications in Python, Go, or Rust, along with backend technologies like...
- BluJuniper is seeking a Senior Backend Engineer to design and implement secure backend services supporting complex operational needs. This full-time role in Washington, DC emphasizes collaboration across engineering, AI/ML, and product teams. The ideal candidate will have...Full time
- Join to apply for the Backend Software Engineer (Remote) role at Jobright.ai Join to apply for the Backend Software Engineer (Remote) role at Jobright.ai Jobright is an AI-powered career platform that helps job seekers discover the top opportunities in the US. We are NOT...Remote jobFull time
$145k - $190k
Overview We are seeking a Backend Support Software Developer for a fully onsite role with high visibility, working in direct support of the National Geospatial-Intelligence Agency (NGA). The position focuses on enhancing existing code, integrating backend solutions, and...- Backend Engineer - Junior Alexandria, VA. Hybrid schedule: On-site Tuesday, Wednesday, and Thursday. Active Secret Clearance Responsibilities Design and develop Spring Boot microservices (Java21+) that expose RESTful APIs to frontend consumers. Decouple and break down...
$65 - $70 per hour
Job Title: Senior Backend Software Engineer Location: Remote Employment Type: Contract Pay Rate : $65 - $70/ hour Benefits: This position is eligible for medical, dental, vision, and 401(k). The Role We are seeking a Senior Software Engineer to play a pivotal role in transforming...Contract workLocal areaRemote work- ...logistics technology backbone that the U.S. and allied militaries need to dominate in large-scale combat operations. As a Software Engineer at Rune, you will be part of a small, high-impact team working at the intersection of advanced logistics algorithms, modern AI...Full timeWork at office
$125k - $225k
...language processing, data infrastructure, secure collaboration, and mission-focused AI/ML applications. We are looking for a Senior Backend Engineer to help build secure platform services for a computer vision and natural language processing application. This role will focus...Full timeContract workFlexible hours$250k - $350k
...integrate new lodging and cars partners into our core stack, and optimize system monitoring. This role is designed for a self-directed engineer who excels at system exploration and immediate technical execution within an established, high-growth travel environment. What...Immediate startRemote workWork from home$135k - $200k
...these programs are relied upon for daily operations in the command centers and battlefronts of militaries across the world. Backend Software Engineers at Palantir build software at scale to transform how organizations use data. Our Software Engineers are involved...Work at officeRemote workWork from homeRelocation package- hackajob is seeking an experienced backend systems architect in Arlington, Virginia. You will design and build core services that ensure fast, reliable, and secure systems, working closely with product and operations teams. The ideal candidate has over 10 years of experience...Flexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Backend Engineer. Be the first to apply!
- back-end developer Washington DC
- senior backend developer Washington DC
- backend software engineer Washington DC
- remote back end developer Washington DC
- backend intern Washington DC
- backend .net developer Washington DC
- back-end developer
- senior backend developer
- ibm backend developer
- back end developer internship summer