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Unusual

Unusual

San Francisco, CA

Founding Engineer - Miravoice
No salary listedOn-siteBackend Engineering

Founding Engineer builds voice AI platform for surveys, designing architecture, scaling infrastructure for millions of calls, and shipping customer-facing features. Requires strong backend, distributed systems, or AI/ML skills with product mindset.

Flaglerhealth

Flaglerhealth

Senior Software Engineer Backend
No salary listedOn-site5+ YOEBackend Engineering

Build and operate highly available backend services and real-time communication workflows for a healthcare platform. The role requires TypeScript or Python, distributed-systems expertise, workflow orchestration experience, and familiarity with regulated environments.

Sweep

Sweep

Tel Aviv, Israel

Senior Back-End Developer
No salary listedHybrid7+ YOEBackend Engineering

Senior backend developer responsible for designing and delivering scalable platform features across the product lifecycle. Requires 7+ years of software development experience and proficiency with Node.js, Python, TypeScript, Docker, SQL, and AWS or similar cloud platforms.

OpenAI

OpenAI

San Francisco, CA

Software Engineer, Monetization Infrastructure (SF/Seattle)
$230k+/yrOn-site10+ YOEBackend Engineering

Builds core backend infrastructure for OpenAI's monetization and ads systems, architecting large-scale distributed systems focused on reliability, privacy, performance, and security. Requires 10+ years experience in mission-critical systems.

Spotify

Spotify

London, United Kingdom
Senior Backend Engineer - Subscriptions
No salary listedHybrid5+ YOEBackend Engineering

Build and operate scalable Java backend services powering personalized subscription conversion, retention, and upsell journeys. The role requires 5+ years of backend engineering experience, cloud-native development, distributed systems expertise, and strong cross-functional collaboration.

DiligenceSquared

DiligenceSquared

New York, NY

Founding Engineer - Backend
$160k+/yrOn-site3+ YOEBackend Engineering

Founding backend engineer architects scalable AI-powered services, agent orchestration, and voice AI pipelines for automated market due diligence platform. Requires 3+ years Python backend, production APIs, LLMs, PostgreSQL, and async systems expertise.

character.ai

character.ai

Redwood City, CA

Software Engineer, Backend
$180k+/yrHybrid5+ YOEBackend Engineering

Builds and maintains scalable backend systems and APIs, collaborating with cross-functional teams to deliver high-performance solutions aligned with business needs. Requires 5+ years experience with Python/Go, databases, cloud platforms, and containerization.

ENFOS

ENFOS

Durham, NC

Senior Software Engineer - 2026
No salary listedOn-site5+ YOEBackend Engineering

Builds and optimizes scalable backend systems, data pipelines, and AI integrations for enterprise SaaS platform managing environmental obligations. Requires 5+ years backend experience, Bachelor's in CS/Engineering, and expertise in Java/Python, cloud infra, and ML frameworks.

Standard Template Labs

Standard Template Labs

New York, NY

Senior Software Engineer – Infrastructure
$190k+/yrOn-site5+ YOEBackend Engineering

Senior software engineer responsible for architecting and scaling a multi-tenant graph data tier for an enterprise SaaS platform. The role requires 5+ years of software engineering experience, strong graph and distributed-systems expertise, and proficiency in a modern backend language.

Docker

Docker

United States

Staff Backend Engineer, Hub (US East Coast)
$195k+/yrRemote8+ YOEBackend Engineering

Staff Backend Engineer owns end-to-end high-scale distributed systems for Docker Hub, focusing on registry platform, storage, and APIs. Requires 8+ years experience with Golang, Kubernetes, and large-scale architectures in a remote-first environment.

Decagon

Decagon

San Francisco, CA

Staff Software Engineer, Agent Orchestration
$200k+/yrHybrid7+ YOEBackend Engineering

Design and operate the distributed runtime, orchestration, control-plane, and experimentation systems that govern production AI agents. The role requires staff-level experience building reliable backend platforms, debugging complex systems, and improving latency, safety, observability, and execution quality.

Sequence

Sequence

New York, NY
Product Engineer - NYC
$180k+/yrHybridBackend Engineering

Builds revenue-critical backend systems including AI-powered approval workflows, intelligent collections agents, and scalable billing infrastructure. Ships reliable production code end-to-end, focusing on distributed systems, customer needs, and high-velocity event processing.

Bazaarvoice

Bazaarvoice

Belfast, United Kingdom

Senior Staff Software Engineer
No salary listedHybrid7+ YOEBackend Engineering

Leads the design and delivery of scalable, fault-tolerant reporting and insights systems, including analytical dashboards and data exports. Requires 7+ years building distributed systems, strong programming and cloud experience, and a track record of technical leadership and mentorship.

Quadric

Quadric

Burlingame, CA

AI Kernel Engineer
No salary listedHybrid5+ YOEBackend Engineering

Develops and optimizes AI/LLM kernels for efficient neural network inference on Quadric's GPNPU platform. Requires 5+ years in AI kernel development, C/C++ proficiency, and experience with compute frameworks like CUDA or DSP.

AKASA

AKASA

South San Francisco, CA
Sr. Software Engineer, Backend
$180k+/yrHybrid5+ YOEBackend Engineering

Build and maintain backend services, APIs, and tools for AI-powered clinical documentation and medical coding SaaS products. Requires 5+ years experience with Python, ML pipelines, containerization, and healthcare data standards.

Setpoint.io

Setpoint.io

Austin, TX
Software Engineer (Backend)
No salary listedHybrid3+ YOEBackend Engineering

Builds and owns backend features using Python/Flask to support credit infrastructure platform. Collaborates cross-functionally with 3+ years backend experience in a fast-paced startup.

Figma

Figma

San Francisco, CA
Software Engineer, Distributed Systems
$149k+/yrRemote5+ YOEBackend Engineering

Design, build, and operate scalable distributed systems powering Figma's real-time collaborative design platform. Requires 5+ years backend/infrastructure experience, distributed systems expertise, and cloud proficiency.

Clubhouse

Clubhouse

United States

💻 Software Engineer, Backend (Senior)
$227k+/yrRemote4+ YOEBackend Engineering

Senior Backend Engineer builds and ships experiments for monetization, personalization, and host experiences on Clubhouse, evolves backend systems with a platform mindset, and collaborates cross-functionally. Requires 4-5 years experience in Python/Java and databases like PostgreSQL/DynamoDB.

Adaptive

Adaptive

New York, NY

Senior Software Engineer (Backend)
$200k+/yrOn-site5+ YOEBackend Engineering

Senior backend engineer owns execution of backend and infrastructure projects, ensures secure scalable systems, and drives technical decisions. Requires 5+ years experience in SaaS/fintech with expertise in service architectures, APIs, and data modeling.

Rippling

Rippling

San Francisco, CA
Senior Software Engineer, Backend Full Stack - HR Product
No salary listedHybrid5+ YOEBackend Engineering

Build backend and full-stack features for Rippling's HR products including HRIS, time tracking, benefits, and talent management. Requires 5+ years Python/Django experience, React/TypeScript familiarity, and strong product intuition for complex, scalable systems.

Rippling

Rippling

San Francisco, CA

Senior Software Engineer, Backend Full Stack - Financial Product
No salary listedHybrid5+ YOEBackend Engineering

Builds backend and full-stack features for Rippling's financial products including global payroll, spend management, and compliance systems. Requires 5+ years Python/Django experience, React familiarity, and strong product intuition for scalable systems.

Rippling

Rippling

San Francisco, CA

Software Engineer II, Backend Full Stack - Financial Product
No salary listedHybrid2+ YOEBackend Engineering

Build backend-heavy full-stack features for financial products like global payroll, spend management, and compliance platforms. Requires 2+ years experience with Python/Go backend and React/TypeScript frontend, owning full lifecycle delivery.

Rippling

Rippling

San Francisco, CA
Senior Software Engineer, Backend - IT Product
$159k+/yrHybrid5+ YOEBackend Engineering

Own design and implementation of core backend services and APIs for IT product capabilities. Requires 5+ years experience with Python or Go, distributed systems expertise, and strong CS fundamentals.

Rippling

Rippling

San Francisco, CA
Senior Software Engineer, Backend - HR Product
No salary listedHybrid5+ YOEBackend Engineering

Designs and implements core backend services and APIs for HR product features like HRIS, time tracking, benefits, and talent management. Requires 5+ years in Python/Go, distributed systems, and relational databases expertise at scale.

Rippling

Rippling

San Francisco, CA
Senior Software Engineer, Backend - Financial Product
No salary listedHybrid5+ YOEBackend Engineering

Designs and implements core backend services and APIs for Rippling's financial products, including global payroll, spend management, and compliance platforms. Requires 5+ years experience with Python/Go, distributed systems, and relational databases; hybrid in-office role.

Rippling

Rippling

New York, NY

Software Engineer II, Backend - Platform Team
No salary listedHybrid2+ YOEBackend Engineering

Builds reliable backend services and APIs for Rippling's platform infrastructure, owning full development lifecycle. Requires 2+ years backend experience with Python/Go and PostgreSQL, plus strong collaboration skills in fast-paced environment.

Rippling

Rippling

San Francisco, CA
Software Engineer II, Backend - Financial Product
No salary listedHybrid2+ YOEBackend Engineering

Builds reliable backend services and APIs for Rippling's financial products including global payroll, spend management, tax compliance, and fintech infrastructure. Requires 2+ years backend experience with Python/Go and relational databases like PostgreSQL.

Concourse

Concourse

New York, NY

Backend Software Engineer
No salary listedOn-site2+ YOEBackend Engineering

Builds and scales backend systems, APIs, ETL pipelines, and integrations with finance data sources like ERPs and CRMs to power AI agents. Requires 2+ years backend experience, preferably TypeScript/Node.js, with strong data modeling skills.

Voltai

Voltai

Palo Alto, CA

Formal Verification Engineer
No salary listedOn-site5+ YOEBackend Engineering

Develops formal proofs for hardware design correctness using model checking and property verification. Collaborates with RTL and ML teams on hybrid engines for AI-generated hardware, requiring 5+ years in formal tools like JasperGold.

Dusk Labs

Dusk Labs

New York, NY

Senior Software Engineer | Backend
$170k+/yrHybrid5+ YOEBackend Engineering

Builds scalable backend APIs, microservices, and data pipelines for event management platform. Requires 5+ years experience with Python/Rust/Node, PostgreSQL, AWS, and distributed systems.

Confido

Confido

New York, NY

Staff Software Engineer
$280k+/yrOn-site8+ YOEBackend Engineering

Leads design and development of core platform systems for AI-powered financial data ingestion, processing, and analytics. Requires 8+ years experience in systems architecture and scaling complex production systems.

Confido

Confido

New York, NY

Senior Software Engineer
$200k+/yrOn-site4+ YOEBackend Engineering

Build and scale core platform infrastructure including data pipelines, backend services, APIs, and AI-powered workflows for financial operations in CPG brands. Requires 4+ years backend experience, systems design, and handling large datasets.

Voltai

Voltai

Palo Alto, CA

Research Engineer - CUDA Kernel Engineering
No salary listedOn-siteBackend Engineering

Develops and optimizes CUDA kernels for AI models accelerating semiconductor design, verification, and chip optimization across large-scale GPU clusters. Integrates with frameworks like PyTorch and latest NVIDIA hardware for training, inference, and RL workloads.

Rippling

Rippling

San Francisco, CA

Staff Software Engineer - Payroll Orchestration
No salary listedHybrid8+ YOEBackend Engineering

Builds and maintains scalable distributed systems for payroll orchestration using message queues, job flows, and bitemporal data models. Requires 8+ years experience with Go/Python, concurrency control, and databases like PostgreSQL/MongoDB.

Parker

Parker

Senior Software Engineer - Backend
$170k+/yrOn-site7+ YOEBackend Engineering

Designs, builds, and scales backend services and APIs for fintech platform handling billions in transactions. Leads architecture, mentors engineers, and ensures reliability using Node.js, PostgreSQL, Kubernetes, and AWS. Requires 7+ years backend experience.

Cerebras Systems

Cerebras Systems

United States
Senior Runtime Engineer
No salary listedOn-site5+ YOEBackend Engineering

Design and optimize distributed runtime software for large-scale AI training and inference across heterogeneous clusters. The role requires 3+ years of high-performance or distributed systems experience, strong C/C++ skills, and expertise in concurrency, memory management, and performance optimization.

Raylu

Raylu

New York, NY

Senior Backend Engineer
$165k+/yrOn-siteBackend Engineering

Senior Backend Engineer architects and operates scalable, low-latency backend services using Node/TypeScript, Temporal, and Redis. Requires expertise in distributed systems, durable workflows, cloud reliability, with bonus for Go and LLM experience.

Siftstack

Siftstack

San Francisco, CA
Staff Backend Engineer
$200k+/yrHybrid7+ YOEBackend Engineering

Builds and scales backend systems for real-time telemetry data ingestion, storage, and serving at massive scale. Requires 7+ years experience with Go/Rust/Python, distributed systems, SQL, APIs, and Kubernetes.

Perplexity

Perplexity

Belgrade, Serbia
Member of Technical Staff
No salary listedOn-siteBackend Engineering

Build and optimize ultra-low-latency distributed search infrastructure in Rust, focusing on backend services, performance tuning, reliability, and scalability. The role requires strong systems design, Linux, cloud infrastructure, and performance-debugging expertise.

Granted

Granted

New York, NY

Backend Engineer, Agentic AI (Staff+ Level)
$150k+/yrRemote9+ YOEBackend Engineering

Build scalable backend systems and AI-driven agentic workflows to automate healthcare claim resolutions and billing error corrections. Requires 9+ years backend experience with strong AI interest, including prompt engineering and model evaluation.

VGS

VGS

United States
Sr. Software Engineer
$140k+/yrRemote6+ YOEBackend Engineering

Develops and maintains high-throughput Payments services, Card Attributes, Webhooks, and Event Pipeline using Java/Spring and Kafka in cloud-native microservices architecture. Requires 6+ years expertise in Java, Spring, Kafka, Kubernetes, AWS, and observability tools.

Layer Health

Layer Health

Boston, MA
EHR Integration Engineer
$140k+/yrHybrid5+ YOEBackend Engineering

Develops and maintains integrations with EHR systems like Epic and Cerner using Python and standards such as FHIR and HL7. Troubleshoots issues, tests integrations, and communicates with teams and clients. Requires 5+ years experience and strong healthcare interoperability knowledge.

Stedi

Stedi

United States

Backend Engineer: US & Canada
No salary listedRemote4+ YOEBackend Engineering

Build and scale healthcare APIs using serverless AWS technologies and Rust for a programmable clearinghouse. Requires 4+ years experience with AWS serverless and strong coding skills in Rust/TypeScript.

Unit

Unit

Tel Aviv, Israel

Senior Backend Engineer
No salary listedHybrid5+ YOEBackend Engineering

Build and own scalable backend services and developer-facing features in a distributed microservices environment for banking, payments, cards, and lending. The role requires 5+ years of backend experience and strong knowledge of cloud systems, reliability, scalability, and CI/CD.

Giga

Giga

San Francisco, CA
Senior Backend Engineer
$200k+/yrOn-site4+ YOEBackend Engineering

Builds backend infrastructure powering real-time AI agents, including data pipelines, analytics (ClickHouse migration), hallucination detection, and browser agents. Requires 4+ years backend experience with Python/Django/FastAPI, TypeScript/Node.js, and cloud infra like AWS/Kubernetes.

Giga

Giga

San Francisco, CA

Staff Backend Engineer
$290k+/yrOn-site7+ YOEBackend Engineering

Staff Backend Engineer leads complex projects, designs scalable system architecture for AI agent infrastructure, owns high-stakes initiatives, and mentors through hands-on coding. Requires 7+ years backend experience with Python/Django/FastAPI and cloud infrastructure expertise.

Alluxio

Alluxio

China

Staff Software Engineer - Distributed System Development
No salary listedOn-site7+ YOEBackend Engineering

Leads architecture and development of Alluxio’s large-scale distributed data services, focusing on scalability, durability, high availability, concurrency, and caching. Requires a bachelor's degree or equivalent experience, strong programming skills in Java, C/C++, or Go, and distributed-systems expertise.

Baseten

Baseten

San Francisco, CA
Software Engineer - Model APIs
$180k+/yrHybrid3+ YOEBackend Engineering

Builds and optimizes Model APIs for high-performance AI model serving, focusing on inference capabilities, low-latency backend services, and GPU optimizations. Requires 3+ years in distributed systems with strong performance debugging skills.

Ether.Fi

Ether.Fi

Denver, CO
Smart Contract Engineer
$120k+/yrOn-site4+ YOEBackend Engineering

Build and operate Solidity smart contracts and backend systems supporting secure on-chain operations for a crypto-native financial platform. The role requires strong software engineering fundamentals, security-minded development, and at least four years of industry experience.

Higharc

Higharc

United States

Sr. Software Engineer, Geometric Modeling/CAD
No salary listedRemote5+ YOEBackend Engineering

Develops core geometric modeling algorithms for home design software, solving complex CAD problems using TypeScript and React. Requires 5+ years in CAD/geometric modeling and expertise in meshes, BReps, NURBS, BSPs.