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Rippling

Software Engineer II, Backend - Platform Team

RipplingNew York, NY

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.

Salary not listed
Hybrid2+ YOEBackend Engineering
Rippling

Software Engineer II, Backend - HR Product

RipplingSan Francisco, CA

Builds reliable backend services and APIs for Rippling's HR product, powering HRIS, time tracking, benefits, and talent management. Requires 2+ years backend experience with Python/Go and PostgreSQL, focusing on scalable, compliant systems.

Salary not listed
Hybrid2+ YOEBackend Engineering
Rippling

Software Engineer II, Backend - Financial Product

RipplingSan Francisco, CA +1

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.

Salary not listed
Hybrid2+ YOEBackend Engineering
Concourse

Backend Software Engineer

ConcourseNew York, NY

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.

Salary not listed
On-site2+ YOEBackend Engineering
Idler

Staff Software Engineer

IdlerSan Francisco, CA

Designs and builds scalable agentic systems for generating and QA'ing reinforcement learning environments that teach AI models to code. Leads core technology primitives, owns full stack, and mentors juniors with 8+ years experience.

300k – 400k/yr
On-site8+ YOEBackend Engineering
WHOOP

Senior Software Engineer (Backend, Business Systems)

WHOOPBoston, MA

Designs and implements backend services, APIs, and data pipelines powering internal business operations for Finance, Operations, and Member Services. Requires 5+ years backend experience, proficiency in Java/Python/Go, cloud infrastructure, and cross-functional collaboration.

Salary not listed
On-site5+ YOEBackend Engineering
Voltai

Formal Verification Engineer

VoltaiPalo Alto, CA

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.

Salary not listed
On-site5+ YOEBackend Engineering
Dusk Labs

Senior Software Engineer | Backend

Dusk LabsNew York, NY

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.

170k – 220k/yr
Hybrid5+ YOEBackend Engineering
WHOOP

Software Engineer II (Backend, Healthcare)

WHOOPBoston, MA

Builds and maintains backend services using Java, Kafka, Postgres, and AWS to deliver healthcare features connecting users to data science insights for health optimization. Requires backend development experience with APIs, databases, and asynchronous systems.

Salary not listed
On-siteBackend Engineering
Confido Legal

Staff Software Engineer

Confido LegalNew York, NY

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.

280k – 330k/yr
On-site8+ YOEBackend Engineering
Confido Legal

Senior Software Engineer

Confido LegalNew York, NY

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.

200k – 280k/yr
On-site4+ YOEBackend Engineering
Voltai

Research Engineer - CUDA Kernel Engineering

VoltaiPalo Alto, CA

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.

Salary not listed
On-siteBackend Engineering
Rover

Staff Engineer, Payments Team

RoverSeattle, WA

Leads technical vision and designs scalable payments, orders, and accounting systems. Collaborates across finance teams, mentors engineers, and works full-stack with 10+ years experience in Python and distributed systems.

182k – 242k/yr
Hybrid10+ YOEBackend Engineering
Rippling

Staff Software Engineer - Payroll Orchestration

RipplingSan Francisco, CA

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.

Salary not listed
Hybrid8+ YOEBackend Engineering
Parker

Senior Software Engineer - Backend

ParkerNew York, NY

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.

170k – 230k/yr
On-site7+ YOEBackend Engineering
Rippling

Senior Software Engineer - AI

RipplingSan Francisco, CA +2

Builds backend systems, data pipelines, and APIs using ML and LLMs to create AI-driven features for GTM teams. Requires 6+ years experience across the stack, user-facing apps, and interest in agentic AI.

Salary not listed
Hybrid6+ YOEBackend Engineering
Raylu

Senior Backend Engineer

RayluNew York, NY

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.

165k – 250k/yr
On-siteBackend Engineering
Siftstack

Staff Backend Engineer

SiftstackSan Francisco, CA +1

Designs and builds scalable backend systems for real-time telemetry data ingestion, storage, and serving at massive scale. Requires 7+ years backend experience, distributed systems knowledge, Go/Rust/Python, SQL, and Kubernetes.

200k – 250k/yr
Hybrid7+ YOEBackend Engineering
Siftstack

Staff Backend Engineer

SiftstackMarina del Rey, CA +2

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.

200k – 250k/yr
Hybrid7+ YOEBackend Engineering
Artisan

Staff Software Engineer (Backend)

ArtisanSan Francisco, CA +1

Builds backend systems powering autonomous AI employees, including high-throughput AI orchestration, platform infrastructure for sales stack replacement, and data-intensive services processing millions of signals for real-time decisions. Requires 6+ years backend experience with distributed systems and cloud-native tech.

225k – 300k/yr
On-site6+ YOEBackend Engineering
Granted

Backend Engineer, Agentic AI (Staff+ Level)

GrantedNew York, NY

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.

150k – 225k/yr
Remote9+ YOEBackend Engineering
Layer Health

EHR Integration Engineer

Layer HealthBoston, MA +1

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.

140k – 160k/yr
Hybrid5+ YOEBackend Engineering
Stedi

Backend Engineer: US & Canada

StediUnited States

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.

Salary not listed
Remote4+ YOEBackend Engineering
Giga

Senior Backend Engineer

GigaSan Francisco, CA +1

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.

200k – 400k/yr
On-site4+ YOEBackend Engineering
Hospitable

Product Engineer, Core & Connectivity (Laravel - Remote)

HospitableUnited States

Builds and maintains core platform and OTA connectivity integrations (Airbnb, Booking.com) using Laravel/PHP backend. Ships customer-focused features in a remote monolithic codebase, requiring 3+ years backend experience with Laravel essential.

124k – 154k/yr
Remote3+ YOEBackend Engineering
Twenty

Backend Engineer

TwentyWashington, DC

Builds scalable backend services in Go for cyber and electromagnetic systems, handling real-time data ingestion, graph modeling, event-driven architectures, and high-throughput APIs on AWS for national security applications. Requires 3+ years experience and strong Go proficiency.

Salary not listed
On-site3+ YOEBackend Engineering
Giga

Staff Backend Engineer

GigaSan Francisco, CA +1

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.

290k – 400k/yr
On-site7+ YOEBackend Engineering
Baseten

Software Engineer - Model APIs

BasetenSan Francisco, CA +1

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.

180k – 360k/yr
Hybrid3+ YOEBackend Engineering
Zania

Software Engineer

ZaniaSan Francisco, CA

Build scalable backend services and petabyte-scale AI pipelines for agentic GRC platform handling sensitive enterprise data. Requires 5+ years experience with Python, distributed systems, and cloud platforms; full-stack skills a plus.

100k – 200k/yr
On-site5+ YOEBackend Engineering
Higharc

Sr. Software Engineer, Geometric Modeling/CAD

HigharcUnited States

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.

Salary not listed
Remote5+ YOEBackend Engineering
Amperoshealth

Software Engineer, Integrations

AmperoshealthNew York, NY +1

Builds and maintains integrations with healthcare EMR/PM systems using APIs, RPA, and agentic methods. Works directly with clients, implements monitoring for reliability, and scales repeatable frameworks. Requires 5+ years in healthcare integrations.

170k – 285k/yr
On-site5+ YOEBackend Engineering
Valon

Staff Software Engineer

ValonNew York, NY +1

Designs and builds robust backend infrastructure for mortgage servicing platform handling billions in loans at scale. Requires 7+ years experience building scalable systems, with Python/React/Docker/K8s/GCP stack expertise.

255k – 300k/yr
On-site7+ YOEBackend Engineering
PlantingSpace

Bayesian Software Engineering

PlantingSpaceUnited States

Develops modular probabilistic models and algorithms for Bayesian statistical inference and machine learning in Julia, focusing on backend implementation, scaling statistical procedures, and integrating into large software systems for finance and research applications.

Salary not listed
RemoteBackend Engineering
Yeet

Backend Engineer

YeetChicago, IL

Builds and scales Python-based backend systems for real-time observability platform, focusing on streaming data pipelines, high-throughput ingestion, and distributed reliability. Requires strong Python backend experience and distributed systems design skills.

Salary not listed
On-siteBackend Engineering
Yeet

Rust Engineer

YeetChicago, IL

Build yeetd, a dynamic BPF runtime for on-demand Linux server observability using Rust. Requires deep Linux kernel expertise, fluent Rust for safe concurrent systems, and eBPF/kernel instrumentation knowledge.

Salary not listed
On-siteBackend Engineering
WHOOP

Software Engineer II (Backend, Platform)

WHOOPBoston, MA

Builds and maintains scalable backend systems and APIs for WHOOP's platform, ensuring reliability, security, and performance. Requires 2-4 years backend experience with Java/Python/C#, RESTful APIs, microservices, and cloud infrastructure.

Salary not listed
On-site2+ YOEBackend Engineering
Kepler

Software Engineer

KeplerNew York, NY

Architect and build core backend systems for an AI research platform in finance. Own infrastructure, data pipelines, and AI integrations while driving technical direction and mentoring engineers.

150k – 200k/yr
On-site3+ YOEBackend Engineering
CodeRabbit

Senior Software Engineer - Backend

CodeRabbitSan Francisco, CA

Builds scalable backend services, APIs, and distributed systems for AI-driven code review tools. Requires 5+ years experience with TypeScript/Node.js, cloud platforms, containerization, and integrating ML models into agent-based systems.

185k – 275k/yr
Hybrid5+ YOEBackend Engineering
Render

Software Engineer, Billing

RenderUnited States

Designs, builds, and maintains usage-based billing systems, integrating third-party platforms like Orb, Metronome, and Stripe. Requires 3+ years experience with Go, databases, and cross-functional collaboration for accurate, scalable billing at Render.

170k – 290k/yr
Remote3+ YOEBackend Engineering
Mercor

Software Engineer, Agentic Product

MercorSan Francisco, CA +1

Builds scalable agentic products including LLM agents, RL environments, full-stack interfaces, and orchestration pipelines for AI model training and automation. Works cross-functionally on automation and evaluation platforms using Python, React, and AI tools.

130k – 500k/yr
On-siteBackend Engineering
Kastle

Founding Engineer

KastleSan Francisco, CA

Architects and owns core backend systems for real-time AI voice agents in consumer lending, focusing on low-latency performance, scalability with Kubernetes, and self-improving AI. Requires strong Python backend expertise and distributed systems knowledge.

130k – 200k/yr
On-siteBackend Engineering
Bluesky Social

Senior Backend Developer, Go - Trust & Safety

Bluesky SocialUnited States

Builds and maintains scalable backend infrastructure for Trust & Safety platform, focusing on high-volume pipelines, ETLs, databases, and abuse prevention systems using Go. Requires 5+ years Go experience and expertise in databases and scalable systems.

170k – 230k/yr
Remote5+ YOEBackend Engineering
Retool

Software Engineer, Core Services

RetoolSan Francisco, CA

Builds and scales secure backend services for code execution and data connectors, focusing on architecture, sandboxing, and Kubernetes-based infrastructure. Requires 6+ years experience with cloud platforms, security practices, and distributed systems.

164k – 306k/yr
Hybrid6+ YOEBackend Engineering
Tempo

Rust Engineer

TempoSan Francisco, CA +1

Develops low-level systems for a layer-1 blockchain focused on stablecoins and payments using Rust. Requires deep Ethereum ecosystem expertise including EVM, reth, and scalable distributed systems.

Salary not listed
RemoteBackend Engineering
Twenty

Staff Backend Engineer

TwentyArlington, VA

Designs and builds high-throughput backend services processing real-time operational data for national security applications. Requires 10+ years experience, expertise in Golang or similar, distributed systems, AWS, and strong leadership in architecture and mentoring.

Salary not listed
On-site10+ YOEBackend Engineering
Ether.Fi

Senior Software Engineer - Backend

Ether.FiNew York, NY +1

Owns core backend architecture, card transaction processing, and high-availability systems for a crypto neobank. Requires 5+ years experience building scalable, low-latency services for real users.

170k – 200k/yr
On-site5+ YOEBackend Engineering
Radar Labs

Senior / Staff Product Engineer, Backend

Radar LabsNew York, NY

Build and extend core backend platform handling 1B+ daily API calls using TypeScript, Rust, and geospatial databases. Collaborate with customers, work across API layers and pipelines at massive scale.

200k – 300k/yr
On-siteBackend Engineering
Crusoe

Senior Software Engineer, Storage

CrusoeSan Francisco, CA +1

Designs, builds, and optimizes distributed cloud storage systems for AI/HPC workloads, focusing on high-performance filesystems, block/object storage, and Linux subsystems. Requires deep expertise in scalable storage infrastructure and languages like Go, C++, Rust.

166k – 201k/yr
On-siteBackend Engineering
Modal

Member of Technical Staff - Python SDK

ModalNew York, NY

Develops high-quality Python SDK libraries and tools to enhance developer productivity for AI infrastructure. Requires 5+ years Python experience, async programming knowledge, strong product sense, and onsite work in NYC.

150k – 350k/yr
On-site5+ YOEBackend Engineering
Collate

Software Engineer (Backend)

CollateSan Francisco, CA

Build and scale backend services, APIs, and data pipelines using Go, Postgres, and AWS for an AI platform accelerating life sciences innovation. Collaborate with product and ML teams to deliver reliable, performant systems in a fast-paced startup.

Salary not listed
On-siteBackend Engineering