June 5, 2026

Software Engineer, Full-Stack

Mid • On-site

San Francisco, CA

About Loop

Loop is the data platform for the global supply chain. Logistics runs on messy, unstructured data—trapped in PDFs, emails, and legacy systems. We use AI to structure this chaos, creating a "source of truth" that automates payments and audits for the Fortune 100.

We are building the financial nervous system for a $100 trillion physical economy. Our technology ensures freight moves efficiently and carriers get paid instantly.

Backed by Founders Fund, Index Ventures and 8VC, we are scaling rapidly. We are looking for engineers ready to deploy production AI that powers the physical economy.

About You
As a full-stack engineer, you will work closely with founders and customers to understand and solve their logistics billing and payment pain points. You will help define the product and ship features that directly impact our customers. You will face and solve many complex technical challenges while you receive guidance and feedback from the team. You will shape the Loop DNA and define how we grow as a company.

Responsibilities

  • Work cross-functionally with product, design, and sales to understand requirements and ship thoughtful solutions.
  • Write high-quality code optimized for extensibility.
  • Engage in code reviews to maintain a high bar of engineering excellence.
  • Lead discussions and documentation to communicate and arrive at the best technical design.
  • Work across different component boundaries, from frontend to backend, and even infrastructure layers.
  • Adopt AI technologies such as Cursor/Codex/Claude to accelerate software development and champion adoption of AI tools across the organization for increased productivity.
  • Promote better practices and share technical knowledge across the team.
  • Help grow Loop through deliberate feedback on product, process, and culture.

Qualifications

  • Willing to work in the SF or Chicago office three days a week
  • Two years of software engineering experience.
  • Experience with TypeScript and tools such as GraphQL, Relay, React, and Node.js.
  • Experience working at early-stage companies where you shipped products end-to-end and wore many hats.

Under the Hood

  • Infrastructure: AWS, CDK, Fargate ECS
  • Backend: TypeScript, Node.js, Prisma, NestJS, PostgreSQL, Kafka, Redis, Elasticsearch, GraphQL
  • Frontend: TypeScript, React, Relay, Ant Design, Vite, GraphQL

Compensation

  • Base pay 150k+ per year

Benefits & Perks

  • Premium Medical, Dental, and Vision Insurance plans
  • Insurance premiums covered 100% for you
  • Unlimited PTO
  • Fireside chats with industry leading keynote speakers
  • Generous professional development budget to feed your curiosity
  • Physical and Mental fitness subsidies for yoga, meditation, gym, or ski memberships

Why you should join Loop?

#LI-LOOP

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We started in workforce—temp staffing, the biggest operational pain point for the manufacturing and logistics customers we serve—and used it to embed ourselves inside their daily operations and create a far better customer experience through technology. Now those same customers are pulling us beyond staffing into the broader operational workflows that run their facilities. That foundation gave us proprietary data from millions of shifts and deep enterprise relationships. But our edge is more than data: by connecting to the systems running across every facility and activating the workers already on our platform to execute against them, we are building applied AI that drives real productivity gains and transforms how the global supply chain operates at scale.We are backed by Founders Fund, Khosla Ventures, and General Catalyst.We are seeking an experienced and entrepreneurial full stack product engineer to join our founding team to help build our core suite of products—mobile apps for both workers & businesses, and web platforms for our business customers and internal Ops team. You'll work closely with our CTO to make key architectural decisions, iterate on the product roadmap, and build the foundational tech platform that will scale over the next several years.About You:Voracious Learner: You love exploring new areas, technologies, languages, and frameworks. You can seamlessly switch between discussing API design, user experience, and deployment infrastructure.Value Clear Communication: You prioritize clear communication, planning, and providing transparent, frequent feedback across the team.Detail-Oriented: You care about the small details, whether it's design patterns or tabs vs. spaces, and understand how everything contributes to the larger success of the product.Experienced in Building Full Stack Systems: You have a strong track record of building and shipping scalable, performant applications from frontend user interfaces to backend distributed systems.You Will:Lead the development of both frontend and backend applications, guiding and mentoring other engineers when necessary.Architect the development of our core systems—from real-time job matching algorithms to autonomous worker vetting pipelines powered by ML and AI agents.Design, architect, and build scalable web and mobile applications, distributed systems, and APIs to meet the growing needs of the business.Work closely with the product and design teams to create a seamless user experience while maintaining high standards for UI/UX.Establish and promote best practices for code reusability, performance, and build processes across both the frontend and backend.Implement systems to monitor application health and performance, helping the team understand user experience and resolve any issues proactively.Be a key player on a scrappy founding team, contributing to the future of flexible light industrial staffing.You Have:5+ Years of Experience in both frontend and backend technologies, specifically Typescript/Javascript, React/React Native, and Node.js or Python.Strong proficiency in building APIs, distributed systems, and client-side state management, along with experience with tools like Docker, Github Actions, and Datadog.A demonstrated ability to ship scalable, high-quality products in a fast-paced environment.Proficiency in databases like PostgreSQL and messaging systems such as RabbitMQ or Kafka.Previous experience working in early-stage engineering teams, thriving in ambiguity, and showing a self-starter attitude.A genuine passion for contributing to meaningful work, helping people find flexible job opportunities that fit their lives.Benefits: Start-up equity Competitive Salary 100% Paid health, dental & vision coverage️ Dinner Provided via DoorDash, free DashPass & stocked kitchen for NY employees Commuter benefit Gympass Benefit✚✚ Additional: One Medical Membership, Gympass, HSA via Optum, Talkspace, HealthAdvocate, Teledoc HealthSalary Range DetailsThe compensation range for this position is set between $200,000 and $240,000, reflecting our market analysis and other relevant considerations. However, exceptions may be made for candidates with qualifications that significantly differ from those outlined in the job description.Equal Opportunity EmployerTraba is dedicated to promoting Equal Opportunity employment practices. We evaluate all applicants without discrimination based on race, color, religion, creed, national origin, age, sex, gender, marital status, sexual orientation and identity, genetic information, veteran status, citizenship, or any other characteristics that are legally protected by local, state, or federal regulations. We encourage applicants from a variety of backgrounds, experiences, and skill sets.Our ValuesDream Big - We are on a path to change the world for the better. We create and communicate a bold direction that inspires a life-changing vision. We don’t sacrifice long-term value for short-term results.Olympian’s Work Ethic - Changing the world never comes easy. We work harder, longer, and smarter, not just two out of three. We put everything we have on the field.Growth Mindset - We confront the toughest challenges head-on and persevere. Sometimes we fail, but we brush ourselves off, adapt, learn, and push forward with resilience.Customer Obsession - We go the extra mile for our workers and businesses. We remain focused on delivering high-quality products and services that solve this massive and overlooked industries’ problemsWhat is light industrial labor?Light industrial flexible staffing is a $50B labor market that encompasses entry-level jobs in warehouses & distribution centers. These workers pack boxes, load trucks, and manage warehouse operations to keep supply chains running at peak efficiency.Job Applicant Privacy NoticeCompensation Range: $200K - $240K

Technology

Hadrian

Senior Engineering Manager, Fullstack

Senior

On-site

Los Angeles, CA

219,996 - 279,996 USD/yr

🏢 Summary: Engineering leadership role owning the Factory Core domain of a mission-critical factory operating system that runs manufacturing execution, shop floor, inventory, and warehouse systems across multiple sites. Responsible for building and leading a product engineering team, driving architecture and delivery, and ensuring operational excellence in distributed production systems. Hands-on player-coach position shaping technical strategy and scaling reliable software for autonomous factories. 🗂️ Requirements: 2–5+ years engineering management experience leading product engineering teams in production, Strong full-stack engineering background, Experience owning business-critical product domains end-to-end, Experience hiring, growing, and retaining engineers, Experience with distributed systems in production environments, Ability to read, review, and write production code, Experience leading architecture and design reviews, Strong communication and cross-functional collaboration skills, Systems thinking across services and data flows, U.S. citizenship, lawful permanent residency, or ITAR work authorization eligibility 📃 Skills: DistributedSystems, FullStack, Architecture, ManufacturingExecutionSystems, InventoryManagement, WarehouseManagement, DataPipelines, SystemDesign, ProductionSystems, CodeReview 🏢 Description: The Role Flow is Hadrian's Factory Operation System: a distributed, mission-critical software platform that coordinates how work is planned, executed, measured, and improved across many factories. Flow is an interconnected platform of services, applications, data pipelines, and operational workflows that must evolve quickly without sacrificing reliability. This role leads engineering for one or more business domains: building a team that ships product, owns its systems in production, and works closely with stakeholders across the company. Factory Core is the part of Flow that runs the physical factory: the Manufacturing Execution System, Shop Floor experience, Inventory, and Warehouse Management. Every part Hadrian makes, moves, or ships passes through these systems, and operators on the floor depend on them every shift. The Factory Core team is at the center of scaling Hadrian's throughput for existing and new factories. You do not need aerospace, defense, or manufacturing experience to excel in this role. What You'll Do - Own one or more business domains end-to-end, including product outcomes, engineering execution, and ongoing operational health. - Hire, grow, and retain a strong team. Set a clear bar, develop careers, and address performance directly. - Stay hands-on as a player-coach. Drive architecture and design reviews, ship code on real roadmap work, and jump into production incidents with the team. - Partner with Product, Design, and Operations to shape the roadmap and turn business priorities into sequenced, shipped work. - Continuously improve the developer lifecycle your team operates in: planning, design, code review, testing, deployment, on-call, and incident response. What We're Looking For - 2-5+ years of engineering management experience leading product engineering teams in production, with a strong full-stack engineering background before that. - A history of owning business-critical product domains, including technical strategy, prioritization, delivery, and operational responsibility. - Experience hiring, growing, and retaining strong engineers, and running a healthy team. - Real product and customer instinct. You understand the product, the user, and the business, and you push your team toward the right outcomes, not just shipped work. - A clear point of view on the developer lifecycle (planning, design, build, ship, operate) and how to make each phase better. - Systems thinking: you understand how services, data flows, and team boundaries interact, and use that to prevent bottlenecks and scaling issues before they happen. - Experience leading or contributing to distributed systems in production, ideally across multiple sites, environments, or regions. - Technical credibility. You can read, review, and write production code, lead architecture discussions, and earn the trust of senior engineers. - Strong communication. You can align engineers, product partners, operators, and leadership, drive decisions, and keep people informed. - Comfortable working in a fast-moving environment with high stakes and short iteration cycles. Compensation For this role, the target salary range is $220,000 - $280,000 (actual range may vary based on experience). This is the lowest to highest salary we reasonably and in good faith believe we would pay for this role at the time of this posting. We may ultimately pay more or less than the posted range, and the range may be modified in the future. An employee's pay position within the salary range will be based on several factors, including, but not limited to, relevant education, qualifications, certifications, experience, skills, geographic location, performance, and business or organizational needs. Benefits for Full-time Employees - Medical, dental, vision, and life insurance plans for employees - 401k - Relocation support may be provided for certain situations, based on business need. - Flexible vacation policy - Equity ITAR Requirements To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Technology

Loopme

Manual QA Engineer

Mid

Hybrid

Krakow, Poland

14,000 - 17,000 PLN

🏢 Summary: Role focused on manual and exploratory testing of Android and iOS SDKs within a high-scale adtech platform, ensuring quality from feature definition through release. The position involves defining test strategies, executing regression and smoke tests, validating multi-device builds, and collaborating closely with developers and automation engineers. It contributes directly to quality standards across a growing mobile SDK portfolio. 🗂️ Requirements: 2+ years in QA or mobile testing, Experience testing Android applications, Experience testing iOS applications, Proficiency with TestRail or similar test management system, Proficiency with JIRA for bug tracking, Understanding of API testing concepts, Experience in Agile/Scrum environments, Experience with network traffic analysis tools 📃 Skills: Android, iOS, TestRail, JIRA, API, Agile, Scrum, Charles, BrowserStack, Maestro, Rust, JavaScript 🏢 Description: About LoopMe LoopMe is an AI company solving one of advertising's hardest problems: making brand advertising actually measurable — and making it perform. Our platform runs patented machine learning models across billions of consumer signals in real time, optimising campaigns toward outcomes like purchase intent, brand lift, and foot traffic rather than proxy metrics like clicks. The result is 2–5x better performance than industry benchmarks, at scale. We operate a high-load programmatic infrastructure — processing millions of ad requests per second with sub-200ms response times globally. This isn't a layer on top of someone else's stack; it's built from the ground up, in-house, by the team you'd be joining. Founded in 2012 and headquartered in London, we now have 400+ people across 19 cities and have sustained 40% revenue CAGR since 2018. The engineering problems here are real, the ownership is genuine, and the scale is significant. The opportunity You'll own manual and exploratory testing across LoopMe's Android and iOS SDKs, playing a key role in quality decisions from feature definition through to release. Working closely with developers, automation engineers, and product managers, you'll define test strategies for new features and help shape how quality is approached as our SDK portfolio grows. This role sits within the Mobile SDK Quality team. What you'll do Design, write, and execute manual test plans and test cases for Android and iOS SDK releases and new feature work Own exploratory, regression, and smoke testing across nightly builds and release candidates Validate Adapter Certification builds across multiple OS versions and device configurations Log, triage, and track defects in JIRA with clear reproduction steps and supporting evidence Manage and maintain test cases in TestRail, keeping coverage current across all SDK projects Partner with the automation team to identify high-value candidates for automated test coverage Participate in sprint ceremonies and contribute to quality sign-off decisions Advocate for quality best practices and drive process improvements as the team scales What you'll bring Essential: 2+ years in a QA or mobile testing role Experience testing Android and iOS applications Proficiency with TestRail or a comparable test management system, and JIRA for bug tracking and sprint management Solid understanding of API testing concepts Experience working within Agile/Scrum teams, including use of Charles Proxy or a similar tool for network traffic analysis Nice to have: Familiarity with BrowserStack or a similar real-device cloud platform Experience with Maestro for mobile UI testing Knowledge of AI tools, including Claude Basic scripting ability in Rust or JavaScript Adtech or programmatic advertising domain knowledge What we offer Hybrid working — flexible schedule 1 month work-from-anywhere Annual performance bonus Multikafeteria (sport/culture card) LoopMe Gives Back Learning & development support