Source Job

Canada Unlimited PTO

  • Design and build the gateway, runtime, and evals services for AI workloads at scale.
  • Own technical decisions from design to launch, including identity, quota, and failover controls.
  • Partner with security and infrastructure teams to set guardrails for agentic workloads.

Python Kotlin AWS Kubernetes LLMs

20 jobs similar to Senior Software Engineer, Backend (AI Platform)

Jobs ranked by similarity.

Canada Unlimited PTO

  • Own and deliver quarterly goals, leading engineers through ambiguity and ensuring support.
  • Collaborate with product, design, and analytics to make decisions considering risks and trade-offs.
  • Support operations and availability of team artifacts while fostering quality and ownership.

Affirm provides clear, predictable buy now, pay later services with no hidden fees. It is a growing, remote-first company that values transparency, flexibility, and customer trust.

$204,000–$290,000/yr
US Unlimited PTO

  • Set technical strategy for the team and drive large-scale, business-impacting projects.
  • Collaborate with product, design, and analytics to ensure technical sustainability and manage trade-offs.
  • Foster engineering quality and talent development through code review standards and mentorship.

Affirm is a financial technology company that provides transparent, flexible payment solutions, allowing consumers to pay over time without hidden fees. The company is remote-first and values inclusivity, offering competitive benefits and a collaborative culture.

Canada Unlimited PTO

  • Break down larger projects into individual tasks and deliver them in phases while collaborating with your team.
  • Partner with product, design, and analytics to articulate technical constraints, assess trade-offs, and shape decisions.
  • Support system availability by creating and monitoring metrics, escalating issues, and participating in on-call efforts.

Affirm is a financial technology company offering point-of-sale installment loans and payment solutions that let consumers pay over time predictably. It is a publicly traded, remote-first company with a global engineering team and a culture centered on transparency, customer trust, and flexibility.

Poland

  • Set the technical strategy for the Recoveries platform and drive cross-team initiatives that optimize recovery strategies and strengthen reliability.
  • Collaborate with product management, design, and analytics to manage technical sustainability, risks, and trade-offs across the product lifecycle.
  • Foster a culture of quality and ownership by setting code review and design standards, while developing talent through feedback and guidance.

Affirm provides clear, predictable payment solutions with no hidden fees, helping people pay over time for the moments that matter. The company is remote-first and values transparency, flexibility, and employee well-being.

Global

  • Build LLM-based agents on the platform's scaffolding, integrating tool calls, internal APIs, and guardrails.
  • Take agents to production on AWS with containers, CI/CD, secrets, permissions, and security controls.
  • Define and run evals, monitor with Langfuse, and document runbooks for independent operation.

Muttdata builds innovative Data Products and Machine Learning solutions to help companies solve complex business challenges. It is a fast-growing, remote-first startup that values collaboration, continuous learning, and a positive, ownership-driven culture.

$146,000–$225,000/yr
US Unlimited PTO

  • Break down larger projects into individual tasks and deliver them in phases with support from your tech lead and manager.
  • Collaborate with product management, design, and analytics to make decisions that consider risks and trade-offs.
  • Support operations and availability of your team's artifacts by creating metrics and participating in on-call efforts.

Affirm is a financial technology company that provides transparent, flexible payment solutions. The company is remote-first and fosters a culture of care, transparency, and flexibility.

US Unlimited PTO

  • Drive technical strategy for the card loan platform by leading planning and execution of projects.
  • Design and develop large-scale, high-availability services with robust APIs and data models.
  • Collaborate across functions with product, analytics, and other teams to define requirements and execute card loan strategy.

Affirm provides a clear, predictable way to pay over time for purchases, with no hidden fees. It is a remote-first company experiencing explosive growth and fostering a culture of care, transparency, and flexibility.

Canada Unlimited PTO

  • Work with technical leaders to design and implement forward-looking approaches for checkout systems.
  • Own components of checkout systems and define their long-term health.
  • Collaborate with engineers to build the next generation of the checkout platform.

Affirm provides a clear, predictable way to pay over time through buy now, pay later solutions. It is a remote-first company with a culture focused on honesty, trust, and customer-centric innovation.

$77,000–$107,000/yr
Poland

  • Own and deliver quarterly technical goals for the Communications area.
  • Design reliable backend services for high-volume, multi-region messaging infrastructure.
  • Collaborate with engineering partners and support on-call operations.

Affirm builds honest financial products that give people a clear, predictable way to pay over time with no hidden fees. It is a remote-first company focused on reliable, performant, and scalable engineering solutions.

$78,840–$117,720/yr
Spain Unlimited PTO

  • Break down complex projects into tasks and deliver them in phases with your team.
  • Collaborate with product, design, and analytics to build scalable card experiences.
  • Support operations and on-call efforts, improving system reliability and availability.

Affirm is a financial technology company that offers clear, predictable pay-over-time solutions with no hidden fees. It is a remote-first company with a collaborative culture focused on transparency, flexibility, and employee well-being through comprehensive benefits.

North America

  • Take deep ownership of key systems and product areas, becoming the technical expert and primary point of reference.
  • Architect, build, and maintain highly available and scalable REST APIs and backend services.
  • Use agentic development workflows and AI coding tools as standard engineering practice.

This partner company builds an AI-driven e-commerce messaging platform powered by customer context and data. It is a high-growth, remote-first environment with a collaborative and supportive culture.

$133,500–$150,000/yr
Americas Unlimited PTO

  • Ship backend features end to end, from a rough customer ask to running in production, often in days rather than weeks.
  • Build testing systems and harnesses that let agents ship changes safely, and work directly with customers when issues arise.
  • Utilize agents heavily in daily work, but have deep understanding of system architecture and participate in oncall.

Lumos is the industry's first Autonomous Identity Platform, providing software that surfaces and acts on access risk, with an AI agent named Albus for identity management. The company has grown from 20 to ~130 employees, raised over $65M from top investors, and is recognized as a top startup employer.

North America Unlimited PTO

  • Take deep ownership of systems and product areas, becoming the go-to technical expert for what you own.
  • Architect, build, and maintain highly available, scalable REST APIs and backend services across distributed systems.
  • Build agentically with AI coding tools, staying at the forefront of emerging AI tooling and practices.

Postscript is an AI messaging platform for Shopify brands, helping e-commerce marketers drive revenue through SMS marketing and AI features. Backed by Greylock and Y Combinator, the company has been fully remote since 2018 and serves 20,000+ Shopify brands with a culture of ownership and AI-first development.

$64,750–$94,750/yr
Poland

  • Break down projects into tasks and deliver them in phases with your team.
  • Partner with product, design, and analytics to build scalable backend systems.
  • Monitor metrics, support on-call, and contribute to code reviews.

Affirm exists to give people a clear, predictable way to pay over time, with no hidden fees. It is a remote-first company that cares about employee well-being through comprehensive benefits and an inclusive culture.

US Europe

  • Build foundational platform services for AI products, including user management, authentication, permissions, and resource access.
  • Own full-stack features end to end, from backend APIs to customer-facing dashboards and internal tools.
  • Work remotely with technical autonomy, collaborating across engineering and product teams on scalable systems.

They build foundational systems that power a suite of innovative AI products used by millions worldwide. They are a high-growth, AI-first engineering organization with an autonomous, low-bureaucracy culture.

US Unlimited PTO

  • Set technical strategy and align your team with critical, business-impacting projects.
  • Collaborate cross-functionally with product management, design, and analytics to manage technical risks and trade-offs.
  • Foster a culture of quality, ownership, and operational excellence through monitoring, testing, and engineering standards.

Affirm provides a clear, predictable way to pay over time through installment loans, with no hidden fees or surprises. It is a remote-first company that values transparency, flexibility, and employee well-being, offering comprehensive benefits and a collaborative culture.

US Unlimited PTO

  • Define and evolve workload safety standards for Affirm's EKS fleet, owning each standard end to end.
  • Lead cross-team initiatives from design through fleet-wide rollout, and mentor other engineers.
  • Participate in on-call for Kubernetes runtime issues and turn recurring failures into roadmap items.

Affirm offers consumers a clear, predictable way to pay over time, with no hidden fees. The engineering team is building large-scale, highly available global infrastructure, with a culture of technical design review and operational excellence.

Global

  • Design and build Model Context Protocol (MCP) servers and integrations to expose data sources to AI assistants.
  • Develop document-processing pipelines for RAG, including parsing, chunking, metadata tagging, and embeddings.
  • Provision AWS infrastructure as code with Terraform and ship production-grade backend services.

Coderio designs and delivers scalable digital solutions for global companies, combining technical expertise with a product mindset. It is a remote-first company that values autonomy, clear communication, and long-term partnerships.

US

  • Design and build full-stack capabilities supporting AI initiatives across Keeper's product portfolio.
  • Develop backend services, APIs, and frontend experiences that integrate AI-driven functionality into secure production environments.
  • Collaborate with AI and product engineering teams to remove technical dependencies and deliver production-ready AI features.

Keeper Security is a cybersecurity software company providing zero-knowledge and zero-trust security solutions that protect passwords, secrets, and infrastructure. It is a fast-growing global organization trusted by millions of users and thousands of enterprises, with a culture focused on innovation and reliability.

US Unlimited PTO

  • Owns the architectural direction for Code Metal's AI platform and the team building it.
  • Builds production-grade inference serving, model gateways, agent harnesses, and context-engineering services.
  • Instruments the stack end to end and drives experimentation and observability for reliable AI systems.

Code Metal provides automated software engineering using AI and formal verification to produce provably correct code. Founded in 2023 and backed by Accel, Salesforce Ventures, and others, it serves defense and enterprise customers from offices in Boston and San Francisco.