Senior Backend Engineer - AI & LLM Systems
Instrumentl
Instrumentl, a fast-growing YC-backed SaaS, is hiring a Senior Backend Engineer to own AI features end to end. You will build APIs, tool-using agents, and RAG pipelines enabling grant discovery, drafting, and research for 5,500+ nonprofits. You'll ship production-grade backends with strong reliability, write tests, observability, and participate in experiments, design reviews, and cross-functional collaboration with product and design. #J-18808-Ljbffr Instrumentl
$175k - $220k
...SaaS platform building the operating system for grant-funded organizations. More... ...matters. About the role We're hiring a Senior Backend Engineer to own AI features end to end, from rapid... ...Ship AI to production Build tool-using LLM agents (task planning, function and tool...SeniorLocal areaHome office- Unity Technologies SF is seeking a senior backend developer to join the Offerwall team, building scalable, resilient systems for high-volume event processing and user identification... ...on large-scale backend services, leverage AI-assisted tools, and apply industry-grade...Senior
- A robotics company in San Francisco is seeking a Backend Software Engineer to own core parts of the software stack for robotic arms. Responsibilities include architecting systems for AI models, maintaining tooling for fleet management, and supporting deployment on real...Senior
- Movendi Inc. is seeking a backend engineer to build scalable services powering the Vitesse platform... ..., as well as telemetry pipelines and AI integrations. Ideal candidates have multi... ...strong track record in high-performance systems, REST/gRPC, and both SQL and NoSQL databases...Senior
- Apple Inc. in San Francisco is seeking a Senior Software Engineer to build and operate backend services for a secure, auditable transaction platform. You will... ...and Accounts Payable to deliver scalable, reliable systems while mentoring engineers and driving architectural...Senior
$150k - $205k
...asset that helps people and AI agents do their best work.We... ...do work.About the roleAs a Senior Frontend Engineer, you'll own a product area end... ...to have: AI/LLM product experience, startup... ...today, but many of its core systems are still being designed, so...SeniorFull timeTemporary workWork at officeHome officeFlexible hours$209.1k - $234.1k
...Protegrity, we lead innovation by using AI and quantum-resistant... ...you.Role OverviewWe are seeking a senior software engineer with experience in backend API development, deployment on Kubernetes... ...on KubernetesIntegrate GenAI systems including LLM, VectorDB, RAG pipelines, agents...SeniorLocal area$148.5k - $223.9k
...SalesforceSalesforce is the #1 AI CRM, where humans with... ..., and the systems that let agents find and... ...looking for a Lead Software Engineer to help us build agentic... ...scale, distributed backend systems.You have experience... ...large language model (LLM) based systems, or evaluation...SeniorFull timeContract work- Senior Backend EngineerLiteLLM is the world's most popular AI Gateway, trusted by top companies like Adobe,... ...looking for a Senior Backend Engineer to help us build rock-... ...common attacks on LLM API's / MCP servers / AgentsIdentify... ...hard bugs and ensure system transparency for end...SeniorWorldwide
$190k - $300k
...the USA to extend our engineering capacity on their behalf. We are hiring a Senior Backend Engineer for one of these... ..., an early-stage AI startup in San Francisco... ...production - Design and ship LLM agents that reason over... ...architecture and systems design skills - Proficiency...SeniorFull timeRemote work$160k - $210k
About The Role We're seeking a strong Senior Backend Engineer to join our AI Evaluation team, focused on building... ..., repeatable evaluation of AI systems in production. In this role, you'll... ...and error recovery. Familiarity with LLM observability or evaluation tools (e...SeniorFlexible hours$180k - $220k
...Senior Backend Engineer (Python) Title of Role: Senior Backend Engineer (Python... ...a Series A voice AI startup that is building a platform... ...infrastructure and backend systems, aiming to replicate and outperform... ...and orchestrate multiple LLM providers, including prompt...SeniorWork at office- ...San Francisco is seeking a Senior Backend Engineer to design and own the core backend... ...for the first AI-powered wealth manager. You... ...will work with a multi-agent LLM architecture and massive financial... ...ability to craft distributed systems using Kafka, Redis, and Kubernetes...Senior
- Temporal, a fully remote company, seeks a Senior Engineer to design, build, and maintain major backend components for Nexus, their durable execution platform. You... ...tenant orchestration within a collaborative Compute and AI org. The role emphasizes implementing scalable...SeniorRemote job
$170k - $200k
Senior Backend EngineerSan Francisco, California, United StatesTatari... ...application of AI and machine learning, Tatari... ...for Senior Backend Engineers to join Tatari and play... ...you will contribute to system architecture decisions,... ...and deploying LLM-based systems in production...SeniorWork at office2 days per week- Moody's is seeking a Backend - Senior Software Engineer to design and deliver scalable back-end software powering insurance analytics products. The role... ...or San Francisco and involves working with Python/SQL and AI tooling to drive impactful solutions. You will collaborate...Senior
$175k - $250k
...micro‑services for conversational AI orchestration—audio capture,... ...transcription, prompt/LLM logic, synthesis, and playback... ...streaming reliability. Ensure system resilience and HIPAA‑compliant... ...functionally with ML, product, data engineering, and client‑SDK teams to...SeniorFull timeFlexible hours- ...data and action layer for AI agents. We give agents... ...and take action in the systems they read from, not just... ...an ML research or prompt engineering role. We’re looking for an experienced backend or platform engineer who... ...orchestration, retrieval, or LLM-powered applications....SeniorWork at officeLocal areaFlexible hours
- Fivetran, Inc. in Oakland is seeking a senior software engineer to join the Metadata team and own the design and delivery... ...data infrastructure. The role requires 5+ years of backend experience, expertise in distributed systems, and proficiency in languages such as Python,...Senior
- ...TO SEE *ALL* OF OUR JOB OPENINGS!Senior Backend EngineerSeeking a Senior Backend Engineer to architect and operate their backend... ...0 clients. You'll build the core systems that power their causation... ...edge technology: Work with advanced AI/ML algorithms, composite AI...SeniorCasual work
$160k - $300k
...A leading technology firm is seeking a Backend Engineer with 5+ years of experience to develop scalable systems and optimize performance. The ideal candidate will have expertise in backend development, proficiency in Python, Java, or Go, and a strong background in cloud...$145k - $217k
...DescriptionSenior Full Stack Engineer, Solve VoiceJoin us at... ...products rooted in AI, automation, and... ...connection.We’re seeking a Senior Full Stack Engineer to... ...doingDesign and implement backend services powering real-... ...features across backend systems and user-facing web...SeniorFull timeRemote work$163k - $246.5k
...confidence. Semgrep gets smarter as you build, with AI that learns your context to cut false positives... .... Learn more at semgrep.dev.About the roleAs a Backend Engineer, you’ll work on our backend and infrastructure systems to design, build and maintain a fast and...SeniorCurrently hiringWork at officeLocal areaRemote workWeekend work3 days per week$180k - $280k
...build reliable and general AI systems to power economically valuable... ...been quietly rethinking the LLM stack from first principles... ...Since mid-2024, we’ve been engineering the foundation for what comes... ...things done. About the role As a senior backend engineer, you will join the...SeniorWork at officeVisa sponsorshipShift work$150k - $245k
...stuff done” end-to-end. You use AI to work smarter and solve... ...designs intelligent, autonomous systems that eliminate financial... ...are tool-agnostic, and expect engineers to own problems end-to-end. We... ...industry has.About the RoleAs a Senior Backend Engineer, you’ll help design...SeniorTemporary workLocal areaWorldwide- ...scattered across a dozen government systems and nearly impossible to... ...it. This is a high-impact engineering role with meaningful equity,... ...the architecture. Own how our backend fleet and data pipeline fit together... ...and Airflow. Fluent with AI-assisted engineering...Senior
- Overview Journey.ai is a growth-stage startup focused on building... ...in the Denver area. Our engineering team is currently a small team... ...to pick which parts of the system to own or take the lead on.... ...with 4+ years of expertise in backend development) Analyzing and optimizing...SeniorFull timeFor contractorsRemote work3 days per week
$175k - $220k
...fast enough to recover. Doxel AI exists to bring computer... ...analytics dashboards, and forecasting engines. We’re at an exciting stage... ...! The Role As a backend engineer at Doxel, you will help... ...commissioning, and field-enablement tools—systems trusted by the world’s largest...SeniorFor contractorsWork at officeFlexible hours- ...dataset with deep expertise in AI and machine learning. Our... ...DoPropose and implement scalable systems for our most sophisticated customersPartner... ...across projects, mentor engineers, and raise the bar on how the... ...You'll Bring5+ years of backend engineering experienceA strong...SeniorFlexible hours
- Sphere is building AI-native trade infrastructure and seeks a senior infra engineer in San Francisco to tackle scaling and latency challenges across critical billing and tax-automation systems. You’ll collaborate with engineering, own cloud-native architecture, and work...Senior
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