Senior Backend Engineer - Casual AI -MarTech/AdTech
Three Pillars Recruiting
PLEASE CLICK HERE TO SEE *ALL* OF OUR JOB OPENINGS!Senior Backend EngineerSeeking a Senior Backend Engineer to architect and operate their backend platform that delivers scalable, high-performance insights for Fortune 500 clients. You'll build the core systems that power their causation analytics—from data processing pipelines to the APIs that serve insights to their customers. This role offers significant technical ownership and the opportunity to work on complex distributed systems at enterprise scale.What You'll Do:Design and build scalable backend services and APIs that process massive marketing datasets with high reliabilityArchitect distributed systems that can handle 10x growth in data volume and customer workloadsOptimize database performance and data models to support complex analytical queries at scaleBuild robust data processing pipelines that transform raw marketing data into actionable insightsCollaborate with frontend engineers to design clean, efficient API contractsEstablish backend engineering best practices and mentor other engineers on the teamWhat Will Help You Succeed:Backend Engineering Excellence8+ years backend engineering experience with significant ownership of production systemsExpert-level Python (FastAPI, Flask, or similar frameworks)Working proficiency in Node.js (comfortable reading and contributing when needed)Strong database knowledge (PostgreSQL, Elasticsearch (can be learned), data modeling, query optimization)System design expertise (distributed systems, scalability patterns, performance optimization)AWS/GCP experience with modern DevOps tooling (Docker, Kubernetes, Terraform, CI/CD pipelines)Problem Solving & CollaborationAbility to translate ambiguous requirements into well-defined technical designsStrong cross-functional communication and collaboration skillsEarly-stage or high-growth startup experience with fast-paced, evolving environmentsProven track record building scalable APIs and data processing pipelinesExperience with data-intensive applications and large-scale data systemsBackground collaborating with frontend engineers on API contracts and interface designNice to HaveAI/ML infrastructure experience or familiarity with analytics platformsStream processing knowledge (Kafka, Kinesis, Redis Streams)Lakehouse architectures (Iceberg) or ELT pipeline experienceExperience mentoring engineers and contributing to technical culture at scaleWhy You Might Be Excited:Hard problems with real impact: You'll tackle the hardest challenges in marketing analytics while building systems that influence multimillion-dollar decisions at Fortune 100 companiesTechnical autonomy: You want ownership over technical decisions and the freedom to solve complex problems your wayCutting-edge technology: Work with advanced AI/ML algorithms, composite AI solutions, private NVIDIA DGX clusters, and the latest in data processing at scaleElite team: Join top engineers who thrive on challenging problems and high-impact workStartup upside: Early-stage equity opportunity with experienced leadership and proven product-market fitWhy You Might Not Be Excited:If you only want to tell people what to build instead of building and coding alongside them, we're not the environment for youYou prefer company practices with 100% built-out process for every detailYou prefer static over dynamic. Projects, priorities, and roles will adapt to your skill set and goals. Though we have real paying customers and a playbook for growth, we proudly remain an early-stage startupJob-3508003*LI-NB1#LI-Onsite
$230k - $280k
...fixing this. We're building an AI-driven marketplace that makes... ...The Role At Mochi, our engineering team operates with exceptional... .... We are looking for a Senior Backend Engineer to own the core systems... ...s designed for deep work and casual collaboration -- The base...Casual workSeniorFull timeWork at officeLocal areaRemote workWeekday work- ...janitorAI in San Francisco is seeking an engineer to build AI interactive entertainment. The role involves improving product features deeply wired into our AI stack and enhancing performance, reliability, and user experience. The ideal candidate will tackle complex problems...Senior
$166.6k - $208.3k
...embodies the elegance of simplicity in engineering, transforming the demanding task of controlling... ...is growing and we’re looking to hire senior backend engineers. We’re a team of pragmatic,... ...lay out tradeoffs.Actively incorporates AI tools into their workflow and is excited...Senior$200k - $240k
...A leading AI company in San Francisco is seeking a Backend Tech Lead to architect and scale their core API infrastructure. This position requires 5+ years of backend engineering experience and expertise in Node.js and large-scale data systems. You'll collaborate with various...Senior$145k - $217k
...DescriptionSenior Full Stack Engineer, Solve VoiceJoin us at Zendesk... ...by building products rooted in AI, automation, and intelligent customer... ...connection.We’re seeking a Senior Full Stack Engineer to build... ...be doingDesign and implement backend services powering real-time...SeniorFull timeRemote work$163k - $246.5k
...control, and confidence. Semgrep gets smarter as you build, with AI that learns your context to cut false positives and prioritize... ..., and Dropbox. Learn more at semgrep.dev.About the roleAs a Backend Engineer, you’ll work on our backend and infrastructure systems to...SeniorCurrently hiringWork at officeLocal areaRemote workWeekend work3 days per week- ...Hire Better Talent Solutions in San Francisco is seeking a backend-focused engineer to build and scale AI-native healthcare products from prototype to production. You will design backend architecture, implement LLM and RAG integrations, and contribute across the full...Senior
- ...A leading tech company in aquaculture is seeking a Senior Backend Engineer to enhance real-time video streaming and AI analysis systems. The role requires 5+ years of backend development experience in Python or Go, and expertise in cloud infrastructure and containerization...Senior
$150k - $245k
...you “get stuff done” end-to-end. You use AI to work smarter and solve problems... ...standards, are tool-agnostic, and expect engineers to own problems end-to-end. We collaborate... ...in the industry has.About the RoleAs a Senior Backend Engineer, you’ll help design the backbone...SeniorTemporary workLocal areaWorldwide- ...Lightning AI is building an end-to-end platform for developing, training, and deploying AI systems. We seek a Senior Software Engineer to design and scale backend systems powering AI development at scale, collaborating across distributed training infrastructure and platform...SeniorWork at officeVisa sponsorship
$209.1k - $234.1k
At Protegrity, we lead innovation by using AI and quantum-resistant cryptography to transform data protection... ...Protegrity is the place for you.Role OverviewWe are seeking a senior software engineer with experience in backend API development, deployment on Kubernetes,...SeniorLocal area- ...challenges. At Sentra, we've developed a true AI teammate that understands an organization... ...'ll do Build and ship scalable backend/platform systems Develop LLM agents... ...looking for Strong backend and platform engineering experience (3+ years) Ability to work...SeniorWork at officeFlexible hours
$140k - $240k
...systems. Working alongside software, hardware, and systems engineers, you'll design and operate the backend services and cloud infrastructure that ingest,... ...Free daily lunch, 'No meeting Fridays', unlimited PTO, casual dress code Compensation Components: Competitive...Casual workSeniorPermanent employmentWork experience placementRelocation package- An innovative AI company is seeking a Senior Backend Engineer to own their core infrastructure. You will design scalable backend systems and collaborate closely with cross-functional teams to implement the company's technical vision. Ideal candidates have 5+ years of experience...Senior
$120k - $200k
...the fastest way to save ~60% on cloud spend. Our AI-powered platform not only fully automates... ...that will involve working on all parts of our backend, from the infra to services, and collaborating with other engineers, designers, and founders. A great opportunity for...Senior- ...Engineer At EvenUpEvenUp is on a mission to close the justice gap using technology and AI. We empower personal injury lawyers and victims to get the justice they deserve. Our... ....This role operates at the intersection of backend engineering, LLM integration, and hands-on...SeniorWork at office3 days per week
- ...quickly. We're looking for product-minded backend engineers to build the core systems behind... ...hard problems across content processing, AI retrieval, and infrastructure that powers... ...thousands of documentation sites. As a Senior Backend Engineer, you'll build the APIs,...SeniorImmediate start
- ...compensation dataset with deep expertise in AI and machine learning. Our platform is perfecting... ...technical direction across projects, mentor engineers, and raise the bar on how the team buildWhat You'll Bring5+ years of backend engineering experienceA strong eye for...SeniorContract workFlexible hours3 days per week
- ...Hurdles is a global recruitment firm partnering with a fast-growing AI startup revolutionizing how companies learn from their users.... ...with equity and rapid growth opportunities. Join a high-impact backend team responsible for powering thousands of simultaneous user interviews...Senior
- Highlight is looking for a Senior Backend Software Engineer to develop critical backend infrastructure, enhancing team management and AI integration. This on-site role demands deep technical expertise and collaboration in a fast-paced environment. Responsibilities include...SeniorRelocation packageFlexible hours
- ...Senior Backend EngineerSan Francisco / Hybrid / RemoteAbout NashLogistics is the substrate beneath... ...RoleWe are looking for a Senior Backend Engineer to design and build the systems at the... ...reliability requirements.Exposure to AI or rule-based automation systems, especially...SeniorFlexible hoursShift work
- Wealth.com is looking for a Software Engineer to design, build, and scale backend systems for estate planning and AI-driven products. The ideal candidate should have 3+ years of backend engineering experience, especially with TypeScript or other typed languages. Responsibilities...Senior
$175k - $220k
...Full Stack Engineer Construction is the 2nd largest industry in the world (4x the size... ...detected fast enough to recover. Doxel AI exists to bring computer vision to construction... ...ll partner closely with product, design, backend, CV/ML, and platform engineering teams to...SeniorFor contractorsWork at officeFlexible hours$500 per month
...Giga Backend Engineer This role is on-site in San Francisco in the Dogpatch neighborhood.... ...generation of customer experience - real-time AI agents that can understand emotion,... ...lieu of formal customer APIs As a senior engineer, you'll be expected to make sound...Senior- A tech company in San Francisco is seeking a Senior Backend Engineer to design backend systems and enhance customer experiences. The ideal candidate... .... Join a team where innovation and continuous learning are valued. #J-18808-Ljbffr Loop AI - Delivery Intelligence PlatformSenior
- Rippletide SAS is seeking a Senior Software Engineer in San Francisco to build the core systems for their Decision... ...The role emphasizes performance-critical backend infrastructure and APIs, engaging with a talented team on significant AI projects. The ideal candidate will have...SeniorRemote job
- ...Forest Labs is a leader in foundational AI models for image and video. Based in Freiburg... ...presence in San Francisco, we seek engineers who can bridge research breakthroughs and... ...live endpoints rapidly. This role spans backend systems, GPU performance, and production...Senior
- A software development company is seeking a Mid-Senior Software Engineer - Backend/Fullstack to work from their San Francisco HQ. The role involves building and scaling their core AI product, particularly focusing on Python backend systems. Ideal candidates have 5+ years...SeniorFull time
- 1 week ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. We’re looking for a senior backend engineer who can architect and scale core systems, take full ownership of complex technical problems, and move quickly with minimal...SeniorFull time
$160k - $300k
...Apiphany is a pioneering foundational AI company for physical product development... ..., our mission is to revolutionize how engineering decisions are made, turning complexity... ...company together. About the Role As a Senior / Staff Backend Engineer at Apiphany, you’ll design,...SeniorWork at officeVisa sponsorshipFlexible hours
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