Backend Engineer - AI Trainer
AfterQuery
AfterQuery empowers foundational AI labs, enterprises, and startups by providing high-quality human-generated datasets that are essential for fine-tuning more capable, refined, and reliable AI systems. We are on the forefront of creating the world's most complex data infrastructure to capture the useful data for our major clients. We have raised our most recent round from BoxGroup, YC and a group of strategic angels that will push us to be at the forefront of the industry. We're seeking a Full Stack Engineer to build diverse, production-quality applications that will serve as training examples for AI models. You'll create complete, functional end-to-end applications across various domains and use cases - each application you build becomes part of our AI training dataset. Your work will involve developing a wide range of software solutions that demonstrate different architectural patterns, features, and implementations. Responsibilities Design and develop complete, production-quality applications from scratch across various business domains and use cases using Next.js, Redis, and SQL databases Build diverse application types including dashboards, management systems, workflow tools, and data-driven platforms that demonstrate different feature sets and architectural patterns Implement comprehensive functionality in each application including user authentication, data management, real-time features, reporting, and complex business logic Required Qualifications Strong proficiency in Next.js for building modern, performant frontend applications with server-side rendering and API routes Experience with Redis for caching, session management, and real-time data handling to optimize application performance Solid experience designing and working with SQL databases (PostgreSQL, MySQL, or similar) including schema design, queries, relationships, and optimization Ability to architect full stack applications that effectively leverage Next.js, Redis, and SQL databases together in production environments Experience implementing efficient data flows between frontend, caching layer, and database to ensure responsive user experiences Retry Experience with Tailwind CSS for rapidly building responsive, custom user interfaces with utility-first styling 5+ years of experience as a software engineer About AfterQuery AfterQuery is a research lab investigating the boundaries of artificial intelligence through novel datasets and experimentation. We believe great AI comes from exceptional, human-generated data. We're backed by top investors, including Y Combinator and Box Group, and support all leading AI labs. #J-18808-Ljbffr AfterQuery
- Backend Engineer AI GatewayWe are building an AI Gateway — a high-performance, secure intermediary layer that routes, inspects, and governs all traffic between enterprise clients and LLM/AI service providers. This role requires deep expertise in network programming, async...SuggestedWork experience placement
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- ...team that runs it. This is a high-impact engineering role with meaningful equity, real ownership... ...do Set the architecture. Own how our backend fleet and data pipeline fit together, and... ..., Python and Airflow. Fluent with AI-assisted engineering workflows — you get...Suggested
- ...Backend Engineer About Discernis Discernis builds AI driven document intelligence for high stakes legal work. Because our customers handle privileged and regulated matters that most cloud AI cannot touch, we run on premises and in customer controlled environments...SuggestedWork at office
$160k - $240k
...leading investors, the company is expanding rapidly and looking for engineers who thrive in a fast-paced, high-ownership environment where... ...product and business. About the Role Design and build backend services powering fintech and SaaS products for healthcare customers...SuggestedWork at officeRemote work- Overview Journey.ai is a growth-stage startup focused on building cutting edge solutions... ...held in the Denver area. Our engineering team is currently a small team of full-time... ...ecosystem (with 4+ years of expertise in backend development) Analyzing and optimizing existing...Full timeFor contractorsRemote work3 days per week
- ...Leads the discovery phase of medium to large projects to come up with high level design.Leads the work of other small group of 3 to 4 engineers for assigned Engineering projects.Leads and participates in end to end service implementations, data feeds ingestion, and...Contract workWork at officeRelocation1 day per week
- ...Job Profile: Senior Multi-Tenant .NET Backend & Integration Engineer This is a hands-on backend engineering role for a developer who will build and deploy a multi-tenant SaaS application on AWS. You will write high-performance APIs using C# and .NET that communicate...Full timeRemote work
- ...Backend Java Engineer With Kotlin Location: Candidate to go to any Intuit or Persistent office twice a week Intuit offices - (Mountain View / San Diego/ Plano Texas/ Atlanta / New York/ SFO) Persistent offices – (Morrisville, Bellevue, New Jersey, Dublin) Mode...Contract workWork at office
- Backend EngineerJersey City, New Jersey, United States; McLean, Virginia, United States; Richmond, Virginia, United StatesWho We Are:Exiger... ...the world a safer and more transparent place to succeed. Our AI platform, 1Exiger, delivers instant visibility into complex supplier...Full timeWork at officeWork from home2 days per week1 day per week
$160k - $190k
Sunbit builds financial technology for real life. Our AI-native platform helps more people get to "yes" at the moments that matter... ...forward with confidence. The Role: We are looking for a Sr Backend Engineer to join our team responsible for designing, building, and maintaining...- Pearson in New Jersey is hiring a Senior Software Engineer to own end-to-end backend architecture and drive scalable, secure services. You will design, build, deploy, and operate distributed systems, leveraging AWS and event-driven patterns while delivering on reliability...
$150k - $200k
...with the team to identify, prioritize, and integrate high-impact AI use cases across workflows. Explore and implement AI-driven... ...used across the groupQualifications:Master’s degree in financial engineering, math, statistics, computer science, or any another quantitative...- Senior Backend Engineer | FinTech Data Platform Were partnering with an innovative and rapidly growing technology business that is transforming... ...is extracted, structured, and delivered through cutting-edge AI, NLP, and machine learning technologies. Were looking for a...Work at officeRemote work
- Pearson is seeking a senior software engineer to own architecture and build scalable backend services on AWS. You will lead end-to-end delivery, mentor teams, and drive modernization while maintaining existing platforms. You will collaborate with product, architecture,...
- The Bitcoin Street Journal is seeking an experienced backend engineer to design and build Web3-enabled services for a Digital Asset Platform. You will work on blockchain integrations, smart contracts, and on-chain event handling. This role emphasizes scalable Java/Spring...
- Tradeweb Markets is seeking an experienced C++ developer to join their technology team. The role focuses on building a next-generation trading platform, with emphasis on high-performance back-end services and robust unit testing. The team operates in a fully remote capacity...Remote job
- ...Backend Java Developer 12-18 month contract $60-70/hour W2; Not available C2C or 1099 ~ We are not able to sponsor Hybrid - 3 days... ...- Understanding of equities domain • Strategic Thinking: AI first approach, Strategic vision, Business knowledge, Innovation...Contract workLocal area3 days per week
- ...Backend Java Developer – Prime Brokerage Location: Hybrid, minimum 3 days onsite per week Duration: 18–24 months Employment Type... .... Experience with Python and shell scripting. An AI-first mindset with an interest in innovation, strategic thinking...3 days per week
$61k - $101k
...Formal training or certification in software engineering concepts and at least 5 years of applied... ...leading the effective use of approved AI-assisted development tools, including setting... ...Security Spring Spring Boot Backend More: We are collaborating with hackajob...Full time$61k - $101k
...formal training or certification in software engineering concepts, plus 5+ years of practical... ...We seek hands-on experience integrating AI/ML and GenAI into enterprise applications... ...Boot microservices UX UI Design Backend More: We are J.P. Morgan, collaborating...Full time$61k - $101k
...per year Requirements: Formal software engineering training or certification, plus at least... ...leading the effective use of approved AI-assisted software development tools, including... ...Security Spring Spring Boot Backend More: We are hiring a Lead Software...Full time$70 - $85 per hour
...operational patterns. As Software Development Engineer, you will own the technical direction of... ...60% BE / 40% FE. Ideal shape is 2 Sr. backend engineers Language: TypeScript is the... ...liability.Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI)...Contract workTemporary workFor contractorsShift work- ...Innodata (Nasdaq: INOD) is a global data engineering company. We believe that data and Artificial Intelligence (AI) are inextricably linked. Our mission is to enable the responsible advancement of artificial intelligence by providing the data, evaluation frameworks, and...Hourly payPart timeFixed term contractRemote work
- ...Life Good for Everyone. Role SummaryADX is hiring a Senior AI FDE (Forward Deployed Engineer) for a unique enterprise AI transformation role focused... ...Solid software engineering foundation, including API design, backend service development, cloud-native architecture, system...Full timeTemporary workFor contractorsLocal areaImmediate start
- ...Hybrid 4 days on-site in Jersey City in Jersey City, NJ Our client seeks a senior back-end engineer to build scalable data services in Java and modernize critical custody systems. The role requires expertise in Spring-based microservices, distributed cloud services...
- ...Responsibilities Design, develop, test, and maintain scalable Java backend applications and services . Develop and maintain RESTful... ...initiatives. Collaborate with frontend developers, QA engineers, DevOps teams, architects, and business stakeholders. Participate...Contract work
- DataAnnotation in the United States is seeking an experienced Radiologist or imaging professional to help train AI models by reading de-identified medical images (chest X-rays, ultrasounds, nuclear medicine). Your reads, impressions, and written rationale will guide model...Remote jobHourly pay
$72 per hour
...client, a leading financial services company, is hiring a Python Backend Developer on a contract to hire basis. Job ID# 85349Work... ...degree in computer science, Data Science, Statistics, Mathematics, Engineering or related field. 5+ years of industry experience as a data...Contract work$160k - $200k
...the future of finance.Responsibilities:Build complex multi-agent AI agents that are highly scalableWork with LLMs, embedding models... ..., Pydantic, and scalable AI workflowsProficiency in prompt engineering and optimization techniquesSome UI/UX experience is a plusQualifications...
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