Senior Backend Engineer

undefined ago • All levels • Backend Development • $120,000 PA - $220,000 PA

Job Summary

Job Description

HappyRobot is a platform for building and deploying AI workers that automate communication, primarily targeting the logistics industry. They connect AI workers to systems for handling phone calls, emails, and messages related to freight. The company has raised a Series A round from a16z and YC and is growing rapidly. They seek a Senior Backend Engineer to maintain thousands of concurrent AI agents, auto-scale deployments, architect fault-tolerant infrastructure, and automate testing procedures, with a strong interest in AI.
Must have:
  • Keep thousands of concurrent AI agents talking with minimal latency.
  • Auto-scale AI deployments efficiently.
  • Architect a fault-tolerant multi-region infrastructure.
  • Help automate testing procedures.
  • Design, build, and maintain scalable, reliable, and secure infrastructure.
  • Write code to automate operational tasks and improve system resilience.
  • Troubleshoot and optimize system performance, latency, and availability.
  • Collaborate with development teams for best practices in reliability and observability.
  • Manage incidents, post-mortems, and continuous improvements.
  • Strong coding skills with Go.
  • Deep understanding of backend systems, APIs, and databases.
  • Kubernetes experience.
  • Passion for AI-driven technologies.
  • Founder Mindset: Hard work, independence, and ownership.
Perks:
  • Opportunity to work at a high-growth AI startup, backed by top investors.
  • Fast Growth - Backed by a16z and YC, on track for double-digit ARR.
  • Ownership & Autonomy - Take full ownership of projects and ship fast.
  • Top-Tier Compensation - Competitive salary + equity in a high-growth startup.
  • Comprehensive Benefits - Healthcare, dental, vision coverage.
  • Work With the Best - Join a world-class team of engineers and builders.

Job Details

About Happyrobot

HappyRobot is a platform to build and deploy AI workers that automate communication.

Our AI workers connect to any system or data source to handle phone calls, email, messages…

We target the logistics industry which relies heavily on communication to book, check on, & pay for freight. Primarily working with freight brokers, 3PLs, freight forwarders, shippers, warehouses, & other supply chain enterprises and tech startups.

We raised a Series A round from a16z and YC and we’re growing very fast.

We're looking for rockstars with a relentless drive, unstoppable energy, and a true passion for building something great—ready to embrace the challenge, push limits, and thrive in a fast-paced, high-intensity environment.

About the Role

  • You’ll keep thousands of concurrent AI agents talking on the phone with minimal latency.
  • You’ll auto-scale AI deployments efficiently.
  • You’ll architect a fault-tolerant multi-region infrastructure.
  • You’ll help automate testing procedures.
  • You like AI. You really like AI.

Responsibilities

  • Design, build, and maintain scalable, reliable, and secure infrastructure.
  • Write code to automate operational tasks, build internal tools and improve system resilience.
  • Troubleshoot and optimize system performance, latency, and availability.
  • Collaborate with development teams to implement best practices for reliability and observability.
  • Manage incidents, post-mortems, and continuous improvements in production environments.

Must Have

  • Strong coding skills with Go.
  • Deep understanding of backend systems, APIs, and databases.
  • Kubernetes experience.
  • Passion for AI-driven technologies
  • Founder Mindset: Hard work + independence + Ownership

Why join us?

  • Opportunity to work at a high-growth AI startup, backed by top investors.
  • Fast Growth - Backed by a16z and YC, on track for double-digit ARR.
  • Ownership & Autonomy - Take full ownership of projects and ship fast.
  • Top-Tier Compensation - Competitive salary + equity in a high-growth startup.
  • Comprehensive Benefits - Healthcare, dental, vision coverage.
  • Work With the Best - Join a world-class team of engineers and builders.

Our Operating Principles

Extreme Ownership

We take full responsibility for our work, outcomes, and team success. No excuses, no blame-shifting — if something needs fixing, we own it and make it better. This means stepping up, even when it’s not “your job.” If a ball is dropped, we pick it up. If a customer is unhappy, we fix it. If a process is broken, we redesign it. We don’t wait for someone else to solve it — we lead with accountability and expect the same from those around us.

Craftsmanship

Putting care and intention into every task, striving for excellence, and taking deep ownership of the quality and outcome of your work. Craftsmanship means never settling for “just fine.” We sweat the details because details compound. Whether it’s a product feature, an internal doc, or a sales call — we treat it as a reflection of our standards. We aim to deliver jaw-dropping customer experiences by being curious, meticulous, and proud of what we build — even when nobody’s watching.

We are “majos”

Be friendly & have fun with your coworkers. Always be genuine & honest, but kind. “Majo” is our way of saying: be a good human. Be approachable, helpful, and warm. We’re building something ambitious, and it’s easier (and more fun) when we enjoy the ride together. We give feedback with kindness, challenge each other with respect, and celebrate wins together without ego.

Urgency with Focus

Create the highest impact in the shortest amount of time. Move fast, but in the right direction. We operate with speed because time is our most limited resource. But speed without focus is chaos. We prioritize ruthlessly, act decisively, and stay aligned. We aim for high leverage: the biggest results from the simplest, smartest actions. We’re running a high-speed marathon — not a sprint with no strategy.

Talent Density and Meritocracy

Hire only people who can raise the average; ‘exceptional performance is the passing grade.’ Ability trumps seniority. We believe the best teams are built on talent density — every hire should raise the bar. We reward contribution, not titles or tenure. We give ownership to those who earn it, and we all hold each other to a high standard. A-players want to work with other A-players — that’s how we win.

First-Principles Thinking

Strip a problem to physics-level facts, ignore industry dogma, rebuild the solution from scratch. We don’t copy-paste solutions. We go back to basics, ask why things are the way they are, and rebuild from the ground up if needed. This mindset pushes us to innovate, challenge stale assumptions, and move faster than incumbents. It’s how we build what others think is impossible.

Similar Jobs

Rocket Science - Software Engineer - Unreal

Rocket Science

Wales, United Kingdom (Hybrid)
4 Months ago
Scopely - Senior Director, Engineering - Yahtzee With Buddies

Scopely

Barcelona, Catalonia, Spain (Hybrid)
4 Months ago
video reality - XR Developer

video reality

Frankfurt Am Main, Hessen, Germany (On-Site)
2 Months ago
Dream world  - Senior Game Designer, MMO Sandbox

Dream world

Redwood City, California, United States (Remote)
2 Months ago
CD PROJEKT RED - Specialist/Senior Cinematic Designer

CD PROJEKT RED

Warsaw, Masovian Voivodeship, Poland (Hybrid)
1 Month ago
ideogram - Backend Engineer

ideogram

Toronto, Ontario, Canada (On-Site)
2 Months ago
ness digital  - Senior BackEnd Developer

ness digital

Timișoara, Timiș, Romania (Hybrid)
2 Months ago
bytedance - Backend Software Engineer - CapCut - San Jose

bytedance

San Jose, California, United States (On-Site)
8 Months ago
Axon - Backend Software Engineer II

Axon

Ho Chi Minh City, Vietnam (Hybrid)
3 Weeks ago
Wildlife Studios - Senior Backend Engineer - Python

Wildlife Studios

São Paulo, Brazil (On-Site)
4 Weeks ago

Get notifed when new similar jobs are uploaded

Similar Skill Jobs

Triple dot studios - Technical Director

Triple dot studios

Barcelona, Catalonia, Spain (Hybrid)
1 Week ago
Ubisoft - Lead Technical Artist

Ubisoft

Annecy, Auvergne-Rhône-Alpes, France (On-Site)
4 Months ago
Univrse - Senior Unity Developer

Univrse

Barcelona, Catalonia, Spain (On-Site)
1 Month ago
GSC Games - GSC Game World

GSC Games

Kyiv, Kyiv City, Ukraine (On-Site)
2 Weeks ago
Endless Studios - Game Producer

Endless Studios

Abu Dhabi, Abu Dhabi, United Arab Emirates (Remote)
11 Months ago
Electronic Arts - Experience Designer (XD Tech)

Electronic Arts

Vancouver, British Columbia, Canada (Hybrid)
1 Week ago
Bitpet - 3D ARTIST

Bitpet

Oslo, Oslo, Norway (Hybrid)
1 Month ago
Tactile Games - Art Director

Tactile Games

Copenhagen, Denmark (On-Site)
4 Months ago
Scopely - Art Director

Scopely

Canada (Hybrid)
3 Weeks ago
Ironhide Game - Game Designer

Ironhide Game

Montevideo, Montevideo Department, Uruguay (On-Site)
1 Year ago

Get notifed when new similar jobs are uploaded

Jobs in San Francisco, California, United States

C3 IoT - Pre-Sales AI Director – Healthcare Provider/Payor

C3 IoT

Redwood City, California, United States (On-Site)
2 Weeks ago
Reddit - Engineering Manager, ML Understanding

Reddit

United States (Remote)
3 Weeks ago
Lambda - Customer Success Manager

Lambda

San Francisco, California, United States (Hybrid)
2 Months ago
Critical mass - Senior Account Manager

Critical mass

Nashville, Tennessee, United States (On-Site)
1 Week ago
Apple - Senior Annotation Analyst

Apple

Austin, Texas, United States (On-Site)
1 Month ago
Go guardian - Director, Product Management - Pear Assessment

Go guardian

United States (Remote)
2 Months ago
Nintendo - CONTRACT - Software Engineer (NTD)

Nintendo

Redmond, Washington, United States (On-Site)
8 Months ago
Glocomms - Pricing Analyst

Glocomms

Atlanta, Georgia, United States (On-Site)
1 Week ago
tic toe games - Senior Game Producer

tic toe games

Burbank, California, United States (On-Site)
2 Months ago
Attio - Solutions Engineer

Attio

New York, United States (Hybrid)
1 Week ago

Get notifed when new similar jobs are uploaded

Backend Development Jobs

Nium - Software Development Engineer II - Node.js

Nium

Mumbai, Maharashtra, India (On-Site)
1 Month ago
AppLovin - Backend Software Engineering Intern

AppLovin

Toronto, Ontario, Canada (On-Site)
2 Months ago
Technorizen Software Solution - Exp. PHP Developer

Technorizen Software Solution

Indore, Madhya Pradesh, India (On-Site)
1 Year ago
OAO INFO INDIA - Magento/Laravel Developer

OAO INFO INDIA

Pune, Maharashtra, India (On-Site)
5 Months ago
Granicus - Software Engineer 3 - Ruby/PHP

Granicus

Bengaluru, Karnataka, India (Remote)
1 Month ago
Flow - Software Engineer- Backend

Flow

Palo Alto, California, United States (On-Site)
3 Months ago
Pocket Worlds - Senior Backend Engineer

Pocket Worlds

United States (Remote)
3 Months ago
EveryMatrix - Senior Backend Software Engineer

EveryMatrix

Zagreb, Croatia (Hybrid)
4 Months ago
kaizen gaming  - Senior Backend Engineer

kaizen gaming

Sofia, Sofia City Province, Bulgaria (Hybrid)
1 Month ago
Privy - Backend Engineer

Privy

New York, United States (On-Site)
5 Months ago

Get notifed when new similar jobs are uploaded

About The Company

San Francisco, California, United States (Hybrid)

San Francisco, California, United States (Hybrid)

Madrid, Community Of Madrid, Spain (Hybrid)

San Francisco, California, United States (On-Site)

San Francisco, California, United States (On-Site)

San Francisco, California, United States (On-Site)

Madrid, Community Of Madrid, Spain (Hybrid)

San Francisco, California, United States (On-Site)

Madrid, Community Of Madrid, Spain (Hybrid)

San Francisco, California, United States (Remote)

View All Jobs

Get notified when new jobs are added by HappyRobot

Level Up Your Career in Game Development!

Transform Your Passion into Profession with Our Comprehensive Courses for Aspiring Game Developers.

Job Common Plug