Senior Backend Software Engineer

GitLab seeks a Senior Backend Engineer (AI) to advance pipeline execution across its platform. The focus is on building and refining backend systems that handle demanding workloads and scale efficiently. The work involves close collaboration within a distributed, fully remote team. What you will do Enhance backend systems to deliver high performance and reliability for AI-driven pipeline execution. Work with team members across multiple locations, sharing knowledge and aligning on technical solutions. Remote work and location This position is open to candidates living in Canada, Ireland, Netherlands, United Kingdom, or the US-Southeast. The role is fully remote, with all collaboration and communication happening online.

About the RoleWe are seeking two highly skilled backend engineers to become integral members of our dynamic team in Montreal and Berlin. In this role, you will be instrumental in enhancing our technological capabilities by significantly improving our core backend functionalities, thereby enabling other teams to efficiently utilize this backend.If you are enthusiastic about creating exceptional products, thrive in a fast-paced environment, and are eager to contribute to the growth of an ambitious startup, then this opportunity is tailor-made for you.Our Technology Stack:Python / FastAPIPostgreSQL / MongoDB / ElasticCloud LLM providers + bare metal GPUsGoogle Cloud Platform (GCP)Joining us as an early team member means assuming significant responsibilities from the outset, with the chance to influence our foundational technological stack and infrastructure.As part of one of the most forward-thinking AI companies today, you will collaborate with a talented team of colleagues who are leaders in their respective domains, creating an incredibly stimulating work environment. Your ResponsibilitiesOwn the delivery of complex projects, collaborating with cross-functional teams to ensure the timely completion of mission-critical components.Gain a comprehensive understanding of Reliant's overarching vision and incorporate this into your architectural and process decisions.Provide insightful feedback to refine UI/UX concepts and assist in planning backend and infrastructure enhancements.Take proactive steps to maintain long-term code quality and architectural integrity. QualificationsWe are looking for a candidate with a proven track record in backend or full-stack development, with a focus on rapid innovation and effective systems design to facilitate scalability for both opportunities and team growth.You will excel in this position if you possess the following skills and experiences:5+ years of demonstrable experience in building backend services or distributed systems.Experience in designing, building, testing, and maintaining backend services and APIs that support product features, including the ability to write robust, production-quality code.Engage in system and service design; contribute to architectural discussions and make informed decisions regarding scalability, latency, cost, and reliability.Ability to navigate ambiguity and translate high-level requirements into actionable implementation plans.Collaborate with cross-functional partners including product management, frontend, UX, data, and operations to define requirements, plan implementations, and deliver features.Ensure code quality through writing, reviewing, and enhancing unit/integration tests.

Cresta is dedicated to transforming customer interactions into a strategic advantage by harnessing the full potential of contact centers. Our innovative platform integrates advanced AI technologies with human intelligence to reveal customer insights, streamline conversations, and enhance operational efficiency, allowing teams to work more effectively. Founded by Sebastian Thrun, a visionary from the Stanford AI lab and the mind behind Google X and Waymo, our leadership team also features CEO Ping Wu, a co-founder of Google Contact Center AI, and Tim Shi, an early member of OpenAI. Join us on an exciting journey to redefine the future of work through AI innovation. The revolution begins at Cresta. About the Role: The AI Agent team at Cresta is committed to developing leading-edge AI Agents that tackle real-world challenges for our clients. We focus on utilizing the latest advancements in Large Language Models (LLMs) and AI Agent systems while ensuring our solutions are secure, cost-effective, and dependable. This role offers hands-on involvement with pioneering projects, requiring innovative software engineers who can translate research into scalable, practical applications. As a Senior Software Engineer, your mission will be to ensure our AI Agents are powered by dependable and scalable server solutions. This encompasses designing and maintaining server architecture capable of managing high-volume interactions while guaranteeing optimal performance and availability. While our emphasis is on server optimization and data management rather than pure research, you will engage with cutting-edge technologies in the cloud and server domains. This is a rare opportunity to influence the AI landscape at Cresta by addressing complex challenges and implementing groundbreaking advancements in production settings.

Cresta is dedicated to transforming every customer interaction into a strategic advantage by harnessing the full potential of contact centers. Our innovative platform merges cutting-edge AI with human expertise to provide contact centers with invaluable customer insights, optimize processes, automate conversations, and empower team members to excel in their roles. Founded by the visionary Sebastian Thrun, renowned for his work with Google X and Waymo, and supported by an exceptional leadership team including CEO Ping Wu and co-founder Tim Shi, we are on the forefront of AI advancements.Join us on this exciting journey to redefine the future of work through AI at Cresta.About the Role:The AI Agent team at Cresta is developing enterprise-grade AI Agents designed to function effectively within real-world contact center settings. A vital aspect of this mission is to ensure that our AI Agents can integrate seamlessly with various CCaaS platforms (Contact Center as a Service), facilitating smooth transitions between AI and human agents as required.This role focuses on building robust backend systems that empower our AI Agents to:Integrate extensively with leading CCaaS platformsEngage in live customer conversations across voice and chatMaintain a complete conversation state and contextExecute real-time actions within the CCaaS ecosystemEffortlessly transition conversations to human agents without losing context, history, or workflow stateAssist human agents with AI support post-transferWe seek talented backend engineers eager to work at the intersection of distributed systems, real-time communication, enterprise integrations, and AI orchestration.This is not merely a research position; it is focused on constructing production-grade infrastructure that ensures AI Agents operate reliably within mission-critical customer environments.Why This Role Is Unique:AI + Real-Time Systems: Contribute to infrastructure that enables AI Agents to participate in live conversations on a large scale.Enterprise-Grade Integrations: Design robust connections with major CCaaS platforms and customer systems.

Join Our Team as a Senior Backend EngineerAt DualEntry, we're pioneering the future of finance with our innovative AI-driven ERP solutions. As a rapidly growing AI startup, we are revolutionizing the fintech landscape, valued at over $220 billion, by helping businesses transition from outdated on-premise systems.Our AI-native ERP empowers accounting teams to maximize efficiency, reducing manual data entry and streamlining workflows. From startups generating $5M in ARR to publicly traded companies, DualEntry is making the dream of a one-person finance team a reality.We're looking for a Senior Backend Engineer who thrives in a fast-paced environment and is ready to take ownership of projects, crafting features and systems that drive our mission forward.You will play a critical role in our engineering team, shaping our backend infrastructure and ensuring we remain at the forefront of the fintech revolution.

Role Overview Venn is hiring a Senior Backend Engineer in Toronto. This role focuses on designing and improving backend architecture to support reliable, scalable applications. The position involves close collaboration with colleagues from various teams to deliver solid software that supports business goals.

Join the innovative team at roofr as a Senior Backend Engineer specializing in our cutting-edge AI Platform. In this role, you will design, develop, and maintain scalable backend systems that power our AI solutions. Collaborate with cross-functional teams to implement robust architectures and optimize performance.

Join Centari as a Senior Backend Software Engineer!At Centari, we revolutionize high-stakes dealmaking by unlocking the power of private deal data. Our innovative deal intelligence platform is paving the way for a new era in law and finance, transcending mere automation to embrace data-driven decision-making. Our proprietary Deal Reasoning Engine converts complex documents into actionable insights, equipping global deal teams with the knowledge needed to negotiate effectively.We foster a diverse team of attorneys, financial experts, and engineers within a hybrid, cross-cultural environment. Our mission is supported by esteemed enterprise AI investors, including GTMfund and industry veterans such as Jeremy Kranz and Andy Appelbaum.We thrive on complexity as it breeds innovation. If you're a proactive builder who excels in ambiguous situations and embraces radical ownership, we want to connect with you!For more details, visit centari.com or follow us on LinkedIn.

Join our dynamic team at 1pertinentinc as a Senior Backend Engineer. In this pivotal role, you will be responsible for designing, developing, and maintaining our backend systems. You will collaborate closely with cross-functional teams to deliver high-quality software solutions that enhance user experiences.We are looking for a passionate engineer who thrives in a fast-paced environment and is eager to tackle complex challenges. Your expertise in backend technologies will help us to scale our applications and improve system performance.

Join Databricks, an innovative leader in data and AI, on our mission to simplify access to data and AI technologies. We are dedicated to transforming industries, from revolutionizing transportation to advancing medical breakthroughs, by providing the world's foremost data and AI infrastructure platform. Our engineering-driven culture fuels our relentless pursuit of solving technical challenges, whether it's enhancing the user experience with next-gen UI/UX or expanding our infrastructure to support millions of virtual machines.As we establish our new R&D center in Vancouver, we are on the lookout for exceptional engineers to help us democratize data and AI. This site is poised to become a cornerstone of product innovation at Databricks, with several strategic initiatives underway.The Vancouver team will focus on key areas, including:Log Analytics - Tackling the challenges of real-time petabyte-scale log analysis, encompassing the entire data processing pipeline from ingestion to user experience.AI/BI - Our AI/BI product is revolutionizing business intelligence with unmatched adoption rates, enabling rich dashboarding and advanced visualizations.Unity Catalog Business Semantics - Governing and managing enterprise data context through our innovative Unity Catalog, enhancing data modeling and AI enablement.Databricks Apps - Contributing to one of our fastest-growing products, with opportunities to work on low-level platform components and AI-driven app builder agents.

Join Flagler Health, an innovative healthtech company dedicated to revolutionizing healthcare delivery through cutting-edge AI-driven workflow automation, enhanced remote patient engagement, and comprehensive chronic care programs. Our platform, already trusted by more than 1.5 million patients, is reshaping the efficiency and cost-effectiveness of care in the $4.5 trillion U.S. healthcare market, and with our unique freemium model, we're set to expand significantly.Key ResponsibilitiesArchitect, develop, and sustain robust backend services and web applications.Engage in the development of real-time web applications for audio and SMS communications with patients.Create and manage fault-tolerant, scalable workflows for asynchronous background processing.Collaborate effectively with frontend, product management, and infrastructure teams to ensure the delivery of reliable, compliant systems.Required QualificationsDemonstrated experience in building high-availability backend applications within regulated sectors (e.g., healthcare, finance).Strong proficiency in TypeScript and/or Python for backend service development.Experience with backend APIs utilizing Node.js, Express, Mongoose, Twilio or similar technologies.Familiarity with distributed workflow orchestration systems such as Temporal, Cadence, AWS Step Functions, or Conductor.Solid grasp of distributed systems principles, including retries, idempotency, and robust failure handling.Preferred QualificationsExperience within the healthcare technology or SaaS sectors at a mid-sized startup.Understanding of HL7, FHIR, or EHR integration processes.Familiarity with cloud services such as AWS, Azure, or GCP.Hands-on experience with CI/CD pipelines, infrastructure automation, and version control systems (e.g., Git).Experience in a monorepo environment (e.g., Turborepo, Nx).

Senior Backend Software EngineerABOUT USProcurify is a leading AI-driven procurement and accounts payable automation platform designed specifically for mid-market organizations. Our mission is to empower businesses to take control of their spending and achieve significant savings.We are seeking a strategic and insightful engineering leader to join our team and assist in the scaling of our platform, development methodologies, and engineering talent.ABOUT THE ROLEAs a Senior Backend Engineer, you will play a pivotal role on our foundational Platform team. This team is responsible for the essential services, APIs, and integration frameworks that connect Procurify with our clients' vital financial and HR systems.In this hands-on role, you will excel in developing robust and scalable integrations. You will lead the design and implementation of connections to key Accounting and ERP platforms, facilitating seamless data exchange and enabling powerful automated workflows for our clients. Your enthusiasm for API design, problem-solving in complex integration scenarios, and mentoring fellow engineers will be crucial in enhancing the team's capabilities.WHAT YOU’LL BE WORKING ON:Design & Build Core APIs: Take the lead in designing, developing, and maintaining our internal and external APIs, contributing significantly to our API-first strategy by utilizing modern Python frameworks like FastAPI.Build & Maintain Key Integrations: Serve as the go-to expert for our suite of third-party integrations, ensuring reliable connections to critical Accounting/ERP systems (e.g., QuickBooks Online, NetSuite, Microsoft Business Central).Enhance our Platform Architecture: Contribute to the long-term vision of our integration platform, designing and implementing scalable, observable, and resilient systems capable of managing high data volumes from numerous customers.Mentor & Grow Teammates: As a senior engineer, you'll provide technical mentorship to other team members, leading by example during code reviews and sharing your knowledge in technical design discussions.OUR TECH STACK:Backend: Python, Django, FastAPICloud: AWS

ShyftLabs delivers data-driven digital products for Fortune 500 clients, working across industries to create measurable business results. Since 2020, the company has grown teams in Canada, the U.S., and India, and values people who turn ambitious ideas into practical solutions. Role overview The Senior AI Engineer position is based in Toronto and focuses on building and deploying AI-powered features in production environments. This is a hands-on engineering role, working closely with Product, Architecture, and other engineering teams to deliver intelligent capabilities for ShyftLabs’ data-centric platforms. The role also involves contributing to the backend infrastructure that supports these products, with an emphasis on scalability and reliability. What you will do Design, build, and deploy AI and machine learning features directly into production systems Work with cross-functional teams to integrate intelligent functionality into new platforms Help develop backend platforms, focusing on scalability and resilience Requirements Significant experience in AI or machine learning engineering Strong skills in backend development Experience with fine-tuning large language model integrations Ability to design resilient APIs or event-driven services

About UsCommon Room is the leading AI Go-To-Market (GTM) Platform that equips your teams with intelligent AI agents powered by comprehensive buyer insights. We consolidate every signal throughout the buyer journey into a continuously-updated, person-level perspective. This empowers your team to identify the right targets, craft personalized messages, and time their outreach effectively.In a world where GTM teams are overwhelmed by tool sprawl, fragmented data, and ineffective AI, Common Room simplifies the landscape with a unified platform designed for scalability and complexity. Our solution integrates data, orchestration, and execution into a single system, perfectly suited for organizations of 75 to over 1000 employees.Having secured over $50 million in funding from prestigious investors like Greylock, Index, and Madrona, we are also supported by more than 25 industry operators from leading companies such as Figma, Stripe, Airtable, Slack, Notion, Loom, and others.Your Impact at Common RoomWe seek individuals who are quick learners and possess a strong grasp of our product, business, and technology. You will thrive on growth and independence while owning and executing significant features. Your expertise in building APIs will help fellow engineers address customer challenges effectively, all while ensuring our systems remain efficient, scalable, and reliable. You will play a key role in advancing Common Room’s core internal capabilities, infrastructure, and systems, often staying a step ahead to meet customer needs.Additionally, you will engage in vital company-building initiatives that are essential for our fast-growing startup.Ideal Team Member6+ years of experience in software engineering.You are self-sufficient yet value collaboration and support from colleagues.Passionate about your craft and eager to manage substantial backend projects.Ability to work effectively with a diverse team of experienced engineers, including front-end developers.Sound judgment regarding trade-offs and tools necessary for problem-solving, preferring stable, well-supported technologies over trendy options.Design systems that address customer issues and find satisfaction in creating simple, elegant solutions.

Join Flagler Health, a dynamic healthtech innovator, as we revolutionize the delivery of healthcare services through cutting-edge AI-driven workflow automation, remote patient engagement, and comprehensive chronic care programs. Our platform has positively impacted over 1.5 million patients and is a trusted partner for healthcare providers and payers aiming to improve operational efficiency and patient outcomes while reducing costs. With a unique freemium model and limited competition, we are set to capture a significant portion of the $4.5 trillion U.S. healthcare market.Key ResponsibilitiesDatabricks Platform Expertise• Design, manage, and enhance data pipelines utilizing the Databricks platform.• Troubleshoot and debug Spark applications to ensure optimal performance and reliability.• Apply best practices in Spark computing and workload optimization.• Python Development• Write clean, efficient, and reusable Python code adhering to object-oriented principles.• Develop APIs to facilitate data integration and application functionality.• Create scripts and tools that automate data processing and workflows.MongoDB Management• Manage, query, and integrate data within MongoDB.• Ensure efficient data storage and retrieval tailored to application needs.• Optimize MongoDB's performance for handling large datasets.• Collaboration and Problem Solving• Collaborate closely with data scientists, analysts, and stakeholders to address data requirements and deliver effective solutions.• Identify and resolve technical challenges related to data processing and system architecture.

GitLab is the leading intelligent orchestration platform for DevSecOps, empowering organizations to enhance developer productivity, streamline operational efficiency, mitigate security and compliance risks, and accelerate digital transformation. With over 50 million registered users, including more than 50% of the Fortune 100 companies, GitLab is trusted for delivering better, more secure software at speed.We believe in applying AI as a fundamental productivity enhancer, and we expect all team members to integrate AI into their workflows to boost efficiency, foster innovation, and create significant impact. At GitLab, your career can soar, your ideas can thrive, and every voice is heard. Our high-performance culture is guided by our values and a commitment to continuous knowledge sharing, allowing our team to achieve their full potential while collaborating with industry leaders to tackle complex challenges. Join us in co-creating the future as we revolutionize software development.Role OverviewAs a Staff Backend Engineer (AI) within the Verify stage at GitLab, you will be instrumental in shaping and scaling the foundational infrastructure for GitLab CI. You will play a vital role in the integration of AI into CI/CD workflows, impacting the performance, reliability, and usability for users managing millions of CI jobs, from small teams to large enterprises.AI is a primary focus this year. In this position, you will not only utilize AI tools but also define how we design, develop, and iterate on AI-assisted and autonomous CI experiences. You will establish benchmarks for excellence across our AI agent portfolio, including success metrics, behavior instrumentation in production, and considerations for the limitations of large language models. Additionally, you will aid in the responsible integration of GitLab's Duo Agent Platform into CI workflows at scale, ensuring a foundation that is fast, reliable, secure, and observable.We have ambitious objectives for Agentic CI in FY27. As a Staff Engineer, you will:...

About Stay22At Stay22, we are redefining how individuals convert online. Our AI-powered affiliate platform empowers publishers, ticketing platforms, and content creators to unlock new revenue streams while enhancing user experience for their audiences. At Stay22, our partners don't just earn more; they also provide more. Join us to be part of something significant that is transforming the affiliate landscape.Job OverviewAs a Senior Backend Developer within Stay22's Neuro Team, you will be pivotal in designing and developing robust backend systems that underpin our AI/ML infrastructure. The Neuro team's mission is to create, develop, and maintain our Roam and Spark engines—our machine learning-based redirection and affiliate link systems—along with associated services such as ML pipelines, model hosting, and LLM gateways.In this role, your focus will be on the AI/ML infrastructure (with model training managed by our ML engineers), ensuring seamless data flow in the pipelines and the reliability of inference services. You will support Stay22's Roam and Spark AI products by developing scalable backend APIs and services for real-time inference and analytics, while also creating APIs and tools that facilitate rapid AI experimentation at the enterprise level.Key ResponsibilitiesDesign, develop, and maintain end-to-end AI/ML pipelines and services, from data preparation to model deployment and real-time inference engines, to support Stay22's AI products.Develop the backend and APIs for the Roam (ML-based redirection) and Spark (AI-based affiliate links) engines, ensuring scalability, performance, and reliability.Create and maintain internal client/gateway layers for large language models (LLM), enabling product teams to leverage these models for functionalities such as content suggestion and classification.Collaborate with the ML engineering team to integrate trained models into production services and with the Data team to optimize the pipelines feeding the models.Work with the Forge/platform team to set up and maintain cloud infrastructure (GCP), ensuring high availability and performance.

Join Waabi as a Senior / Staff Software Engineer specializing in machine learning datasets and data pipelines. In this pivotal role, you will architect and develop robust data solutions that drive our cutting-edge autonomous vehicle technology. Your expertise will help streamline data collection, processing, and analytics to enhance our machine learning models.

Cresta is dedicated to transforming every customer interaction into a strategic advantage by harnessing the full potential of contact centers. Our innovative platform seamlessly integrates advanced AI with human intelligence, enabling contact centers to uncover customer insights, streamline conversations, and optimize workflows. With roots in the esteemed Stanford AI lab, our co-founder and chairman, Sebastian Thrun, is renowned for his groundbreaking work at Google X, Waymo, Udacity, and beyond. Our leadership team also boasts CEO Ping Wu, co-founder of Google Contact Center AI, and Tim Shi, an early contributor at OpenAI.Embark on this exciting journey with us to revolutionize the workforce through AI. The future of work is unfolding at Cresta.About the Role:As part of the AI Agent team, you will contribute to the development of cutting-edge AI Agents designed to tackle real-world challenges faced by our clients. Your focus will be on leveraging the latest advancements in Large Language Models (LLMs) and AI Agent systems, ensuring that the solutions we create are secure, cost-effective, and reliable. This position requires hands-on engagement with state-of-the-art projects, calling for innovative and passionate software engineers capable of translating research into scalable, practical applications.Your primary responsibility will be to guarantee that our AI Agents are supported by resilient and scalable server solutions. This entails designing and maintaining the server architecture capable of managing high-volume, real-world interactions while maintaining optimal performance and availability. Although our focus is on server optimization and data management rather than pure research, you will work with some of the most advanced technologies in cloud and server infrastructure.This is a rare opportunity to influence the future of AI at Cresta by addressing complex problems and deploying groundbreaking AI solutions in production environments.