Senior Backend Engineer – Transform Telecom Infrastructure

About the RoleAt Counsel Health, we have developed an innovative product that has garnered admiration from both patients and physicians, utilizing a fast-paced technology stack. As we continue to grow, the complexity between our application code and infrastructure is expanding. We are seeking a talented individual who thrives in this dynamic intersection.We are in search of a Backend Infrastructure Engineer who embodies both software engineering and infrastructure expertise. This role is not about working in isolation writing Terraform scripts all day or solely delivering product features in React. Instead, you will work within the essential layer that connects our CI/CD pipelines, Infrastructure as Code (IaC) for our AWS environment, backend services, and the developer tools that empower our rapidly expanding engineering team.Your ResponsibilitiesEnhance Our Infrastructure-as-Code: Design and manage our cloud infrastructure utilizing Terraform.Optimize CI/CD Processes: Take ownership of our build, test, and deployment pipelines from start to finish. Aim to make production deployments effortless, speedy, reliable, and automated.Backend Development: Create production-level backend services and contribute to our core server-side systems. You are proficient in writing application code, not just orchestrating it.Create Core Archetypes: Develop production-grade archetypes for new deployments, jobs, consumers, and workers. You are adept at building an abstract base stream consumer or cron executor for widespread application.Enhance Developer Experience: Act as the engineer who accelerates the productivity of other engineers. Streamline local development workflows, decrease build times, resolve flaky infrastructure issues, and create internal tools that the team genuinely values.Security & Compliance: Collaborate closely with our security and compliance team to strengthen our infrastructure security posture, including secrets management, IAM policies, network isolation, and audit logging in a HIPAA-compliant environment.Who You AreA Bridge Builder: You feel at home in an IDE crafting application code as well as in a terminal managing cloud infrastructure. You view backend and infrastructure as intertwined disciplines.An Automation Advocate: If a task is done manually more than twice, you are already scripting it for automation.A Systems Thinker: You comprehend how a request traverses through various systems and how they interact.

Join Brellium as a Senior Backend / Infrastructure Engineer in the vibrant heart of New York City. In this pivotal role, you will be responsible for designing, implementing, and maintaining robust backend systems that power our innovative solutions. You will collaborate with cross-functional teams to ensure seamless integration and high performance of our applications.

Overview: Spur is the AI QA Engineer for every company.Location: New York CityAt Spur, we create groundbreaking technology designed to redefine quality assurance: autonomous browser agents that think, explore, validate, and self-heal like actual users. We aren’t just another testing tool; we are revolutionizing the way digital teams deliver with confidence.The market response has been resounding. Leading brands such as Alo Yoga, Living Spaces, HelloFresh, Nextdoor, and Abercrombie & Fitch are actively engaging with us. Demand is skyrocketing, sales cycles are swift, and our product delivers — teams can go live in days, not months.Our elite team comprises builders from DeepMind, Figma, and former founders who are producing at a pace that larger companies cannot match.Our Mission: We aim to empower our customers to deliver exceptional digital experiences.Explore our Manifesto: https://www.spurtest.com/founders-letterThe RoleAs the founding engineer specializing in infrastructure and backend, you will design the core architecture of Spur’s platform—defining, building, and scaling critical infrastructure that powers our web agents.You will oversee our entire stack from top to bottom, orchestrating vast fleets of browsers and web agents in the cloud while optimizing them for massive scale. Collaborating closely with the founders, you will tackle pioneering infrastructure challenges that have a direct impact on our customers and set the benchmark across our stack, from low-level infrastructure to the user experience delivered by our agents.What You Will DoBuild and scale our core infrastructure to deploy and manage thousands of browser and web agents daily.Design, implement, and maintain our clusters, CI/CD processes, observability, and best practices.Rapidly iterate in collaboration with product, engineering, and the founders.Bonus PointsExperience with distributed task queues and optimizing performance/scalability.A history of generating impact in small teams and scaling infrastructure from the ground up.You Will Excel Here If YouHave 5+ years of experience designing, deploying, and managing infrastructure at scale.Possess deep expertise in Docker and cloud technologies.

Join Palantir Technologies as a Senior Backend Software Engineer specializing in Infrastructure. In this pivotal role, you will work at the intersection of software engineering and infrastructure systems, contributing to the design and implementation of scalable backend solutions that empower organizations to make data-driven decisions.

Join a Transformative Force in TechnologyAt Palantir, we create groundbreaking software that revolutionizes data-driven decision-making and operational efficiency. Our platforms enable partners to combat critical challenges—from developing life-saving medical treatments to predicting supply chain disruptions and locating missing persons.Position OverviewAs a Backend Software Engineer at Palantir, you will play an essential role in shaping how organizations leverage data. You will be engaged in all stages of the product lifecycle, from ideation and design to prototyping and final deployment. Collaborating with both technical and non-technical team members, you will gain insights into customer challenges and develop innovative solutions. We promote cross-team collaboration, allowing you to expand your knowledge across various technologies and product facets. You will work autonomously and make impactful decisions within a supportive community that fosters your growth into a technical leader.Our Product Development teams are composed of small, focused groups of Software Engineers, each dedicated to distinct aspects of our offerings. The infrastructure teams are tasked with fortifying the foundational layers of our software stack, emphasizing database technologies, distributed systems, large-scale data architectures, security, and application infrastructure. In this role, you will write robust code that supports Palantir Foundry and Gotham, ensuring high performance, security, and scalability for products utilized by key public and private sector institutions. You will be instrumental in building the core capabilities that empower research scientists, aerospace engineers, intelligence analysts, and economic forecasters worldwide.We seek engineers who are driven by a passion for solving real-world challenges, enabling both developers and end-users to maximize their productivity. If you are eager to create reliable, high-performing, and scalable systems, and to design resilient APIs, this opportunity allows you to make a substantial impact on our products and the communities we serve.

About TitanTitan is an award-winning wealth management platform on a mission to revolutionize the financial landscape by making wealth advisors accessible to everyone, not just the ultra-wealthy. By leveraging cutting-edge technologies such as artificial intelligence, we empower our advisors with tools that enhance their capabilities, allowing them to serve a diverse clientele. Backed by notable investors including a16z, General Catalyst, and Sam Altman, we proudly manage over $1 billion in assets nationwide.Why Join TitanAt Titan, we are committed to creating an enriching work environment that promises unparalleled growth and fulfillment for the right candidate.Visionary Goals: Join us in our ambitious pursuit of democratizing wealth management, enabling lasting wealth growth across generations.Timely Relevance: The emergence of LLMs presents an unprecedented opportunity to reshape personalized wealth management, propelling our mission forward.Significant Contribution: Be part of a small, dynamic team where your contributions will have a monumental impact on our growth trajectory.Collaborative Culture: We foster a vibrant, in-person working environment where team collaboration thrives, including daily engagement with our founders.Competitive Compensation: Titan offers attractive salary packages and equity options that reflect our commitment to team ownership.Renowned Investors: Join a company supported by some of the most respected names in the industry, including a16z and Y Combinator.Role OverviewAs a Senior Backend / Infrastructure Engineer at Titan, you will play a pivotal role in crafting the systems that drive our next-generation Registered Investment Advisor (RIA) platform, set to scale beyond our current $1B in assets under management (AUM). Collaborating with seasoned professionals from Google and Meta, you will be responsible for architecting, building, and optimizing our core backend services, trading systems, real-time APIs, data pipelines, and automated workflows—all while ensuring security, scalability, and resilience. Your technical expertise will significantly influence platform reliability and performance as we grow.

About UsAt Credal, we are committed to leveraging cutting-edge AI technologies to empower those who are dedicated to shaping a brighter future.Our platform accelerates the complex operations of leading institutions while embedding robust security and governance at every level of our offerings. Our esteemed clientele includes the U.S. Department of Health and Human Services, MongoDB, Comcast NBC Universal, Lattice, Wise (formerly TransferWise), Checkr, and incident.io, among others.With over $10 million in funding secured, we have ample runway to support our ambitious goals. Join a team of Thoughtful Doers™ hailing from top-tier companies such as Palantir, Cruise, Meta, Uber, and Google. Credal operates in-person from our spacious NYC office, complete with meals provided.

About TitanTitan is a pioneering wealth management firm dedicated to revolutionizing the way individuals access financial advisory services. Our mission is to democratize wealth management, empowering every individual with a personal wealth advisor in their pocket. Unlike traditional wealth management, which often caters solely to the ultra-rich, Titan leverages cutting-edge technologies like artificial intelligence to create a platform that amplifies advisors' capabilities, making them accessible to a broader audience. With the support of renowned investors such as a16z, General Catalyst, and Sam Altman, we proudly manage over $1 billion in assets for clients nationwide.Why Join TitanJoining Titan means becoming part of a mission-driven company where your contributions will have a lasting impact. Ambitious Vision: Our goal of placing private wealth management in everyone's hands will redefine wealth accumulation for generations to come.Critical Timing: The rise of large language models (LLMs) fuels our quest to make personalized wealth management a reality for all, motivating our daily efforts.Significant Impact: As a part of our small, agile team, your contributions will be highly visible and influential in shaping the future of Titan.Dynamic Team Culture: We thrive on collaboration, working closely together in our office, alongside our founders who are deeply involved in daily operations.Competitive Compensation: At Titan, we offer attractive salary packages and equity opportunities that ensure every team member feels like an integral part of the company.Renowned Support: With backing from top-tier investors who align with our bold vision, including a16z and Y Combinator, we are poised for continued growth.Role OverviewWe are looking for a Principal Backend / Infrastructure Engineer to join our engineering team in New York City. In this high-impact role, you will be instrumental in architecting, developing, and scaling the core systems that underpin our financial platform. Collaborating with a talented team of former founders and engineers from tech giants like Google and Meta, you will focus on enhancing our backend services, trading systems, real-time APIs, data pipelines, and automated workflows, ensuring they are secure, scalable, and resilient. Your technical expertise will directly influence the reliability and performance of our platform as we scale beyond $1 billion in assets under management.

Join our dynamic team at Kira as a Senior Software Engineer with a focus on backend infrastructure. In this pivotal role, you will design, develop, and maintain scalable backend systems that power our innovative solutions. You will collaborate with cross-functional teams to enhance performance, reliability, and security of our infrastructure.Your expertise will contribute to architectural decisions, and you'll be instrumental in implementing best practices for coding and testing. We are looking for a passionate engineer who thrives in a fast-paced environment and is eager to tackle complex challenges.

Join Spotify as a Backend Engineer within our innovative Data Infrastructure engineering team! In this exciting role, you will pioneer new methods that empower our teams to create insightful analytics for both internal use and the music industry. Our cutting-edge platform provides essential functionalities, from revealing the number of streams for artists' latest releases to assisting internal teams in managing cloud resource utilization.As a vital member of our platform team, your contributions will be instrumental in exemplifying, measuring, and enhancing the reliability of our data infrastructure across various squads within Spotify. Collaborating closely with fellow engineers, you will deliver OLAP capabilities to facilitate dynamic and dependable data visualizations, while also sharing the responsibility of diagnosing, resolving, and preventing production issues. We believe in empowering engineering teams to take operational ownership of their products and are dedicated to providing the support they need to succeed.

CVector is dedicated to revolutionizing economic optimization and AI-driven predictions across energy and manufacturing sectors.Our technology seamlessly integrates critical decision-making factors that impact cost, reliability, and profit margins, providing a unified decision layer that forecasts future scenarios, simulates potential outcomes, and optimizes operational strategies. This allows industrial plants to operate closer to their maximum economic potential daily.This position requires in-office attendance at our New York City headquarters four days a week. CVector serves clients nationwide and operates in challenging industrial environments.Role OverviewAs a Senior Software Engineer specializing in Backend and AI Infrastructure, you will be instrumental in advancing CVector’s backend platform. Your focus will be on developing time-series data systems, AI-enhanced analytics, cloud infrastructure, and data ingestion pipelines that underpin our client-facing applications and internal modeling tools.This role is ideal for engineers who thrive on working closely with data and infrastructure, possess excellent architectural judgment, and are eager to engage with AI systems, databases, and distributed backend services. You will take ownership of complex systems, lead significant technical migrations, and influence the integration of intelligence into industrial energy workflows.You will work in close collaboration with product, modeling, and frontend engineers, significantly impacting the platform's direction, reliability, and scalability for the long term.Key ResponsibilitiesAs a Senior Software Engineer, your contributions will span various interconnected domains:Intelligent SystemsTranslate customer domains and operational workflows into effective prompts and AI system interfaces.Design, implement, and refine evaluations for AI outputs.Incorporate customer feedback and reinforcement signals to enhance system performance.Optimize context selection, retrieval, and trace collection to elevate output quality.Fine-tune smaller models using collected traces to enhance speed while maintaining performance standards.Evaluate and assimilate new AI platforms and models as they emerge.Support the training and deployment of large, time-series-specific models.Backend Platform and Data InfrastructureOversee migrations and enhancements of our time-series data schemas and storage systems.Update and manage PostgreSQL and associated database infrastructure.Develop and sustain data connectors for industrial and external systems.Lead improvements to MQTT-based data ingestion pipelines.Transition PostgREST to a GraphQL-based framework and evolve our API architecture.

About GigaGiga has recently secured a remarkable $61M in Series A funding and is already serving several notable clients, including DoorDash. Our mission is to revolutionize customer experience through cutting-edge real-time AI agents that comprehend emotions, address issues instantaneously, and scale to meet the demands of the world’s largest enterprises.We are at a pivotal moment in our journey. While we have achieved early success, our aspirations extend far beyond. Our vision is to establish ourselves as the leading AI platform for enterprise automation, driven by our voice superintelligence. To realize this ambition, we are on the lookout for exceptional engineers.The impact of our work touches millions of lives daily, and our engineers enjoy the autonomy to make a significant difference. This role is particularly unique due to our visionary founders, proven commercial success, and a clear trajectory towards becoming a generational company. Here are some key highlights about us:Voice AI startup Giga raises $61M Series ADoorDash and Giga PartnershipAt Giga, we create AI agents that are trusted by some of the largest B2C companies globally. Industry giants like DoorDash rely on Giga to manage their most complex support and operational workflows across voice, chat, and email. If you resonate with this mission, we encourage you to apply!The RoleWe are seeking a seasoned infrastructure engineer who will construct the foundational platform that empowers our AI agents. Your primary users will be fellow engineers; your role will involve developing systems, tools, and abstractions that enhance productivity and ensure the reliability of our platform.This position transcends traditional DevOps or SRE roles. You will be responsible for writing application code with a focus on core infrastructure components: deployment systems, observability frameworks, data infrastructure, and the internal tools that enable our team to innovate swiftly and safely.What You'll Work OnHere are a few key priorities that you will tackle:Controlled deployments: Develop staged rollout systems with traffic scaling, scheduling, and pass rate thresholds to safeguard production environments.Observability: Establish the instrumentation, logging, and monitoring frameworks that provide insights into production dynamics.Data infrastructure: Design and implement robust data pipelines and storage solutions.

About UsAt Credal, we are dedicated to leveraging cutting-edge AI technology to empower those who are shaping a better tomorrow.We enhance the most sophisticated operations of leading institutions, seamlessly integrating security and governance throughout our offerings. Our esteemed clientele includes notable organizations such as the U.S. Department of Health and Human Services, MongoDB, Comcast NBC Universal, Lattice, Wise (TransferWise), Checkr, and incident.io.Having successfully raised over $10 million, we have a significant runway to support our vision. Join our team of Thoughtful Doers™ hailing from industry giants like Palantir, Cruise, Meta, Uber, and Google. At Credal, we foster a collaborative in-person environment at our spacious NYC office, where meals are provided.

Join JuniorAt Junior, we are on a mission to revolutionize the investment research process for private market investors through innovative LLM-powered tools. Our esteemed clients include some of the top 10 private equity and consulting firms globally, collectively managing billions in investments annually. As a profitable and bootstrapped startup, we have a dynamic team of 24 professionals based in London and New York City.Learn more about our mission and values here. Role OverviewAs a Senior Backend Engineer, you will play a pivotal role in building and scaling the systems that drive our AI-enhanced research platform. This systems-level position is a perfect fit for engineers passionate about data flows, orchestration, and optimizing performance across complex distributed environments.Being one of our initial engineering hires, you will have the exceptional opportunity to:Deliver solutions rapidlyDesign and scale backend systems that facilitate high-throughput LLM interactions, vector searches, and multi-agent orchestration.Integrate AI infrastructure across various model providers, data stores, and internal APIs to construct cohesive and high-performing systems.Enhance reliability and observability, aiding in the evolution of our database systems (Postgres / ClickHouse) and job orchestration mechanisms.Prototype new backend functionalities (retrieval pipelines, caching layers, async task queues) to expedite our development processes.Influence our engineering culture About YouWe seek product-focused backend engineers who:Are based in NYC, as we operate 5 days a week in the office.Are enthusiastic about the fusion of AI infrastructure and systems design.Possess experience in leading projects from inception to completion.Are eager to influence product decisions.Are proficient in our technology stack: Next.js, TypeScript, PostgreSQL.Feel a constant drive to build faster.

Join Via, where we leverage technology to revolutionize global transportation. As a Senior Backend Engineer, you will play a pivotal role in our Platform team, contributing to innovative solutions that impact the daily commutes of thousands while minimizing environmental impact. Collaborate with a talented group of developers and DevOps engineers to build and maintain the cutting-edge infrastructure that powers our operations. This hybrid role requires you to be onsite in NYC 2-3 days a week, allowing for hands-on teamwork and collaboration.

Join arch.co as a Lead Infrastructure Engineer, where you will play a pivotal role in designing, implementing, and maintaining our cutting-edge infrastructure systems. Collaborate with cross-functional teams to ensure robust architecture and performance optimization, while mentoring junior engineers and providing technical leadership.

Role Overview BitGo is looking for a Senior Infrastructure Engineer in New York to help strengthen and expand the systems behind its crypto financial services. This role focuses on designing, building, and maintaining scalable infrastructure that supports the company's growth and reliability goals. What You Will Do Design and implement systems that scale with increasing demand Maintain existing infrastructure to ensure high reliability and performance Identify areas for improvement and contribute to better engineering practices About BitGo BitGo provides crypto financial services and relies on a strong engineering foundation to deliver secure, high-performing products.

Senior Staff Backend EngineerLocation: Manhattan, New YorkOnsite | Full-timeJoin our dynamic team at mlabs, the innovative engine behind one of the most visited platforms in the digital asset industry. With a staggering ~$1B in daily volume, our cutting-edge technology stack is designed to manage low-latency, high-throughput, and consistent load at an unprecedented scale.The RoleAs a Senior Staff Backend Engineer, you will be a pivotal technical leader, ensuring the robustness and continuous advancement of our core backend systems. Your role involves a combination of high-level architectural oversight and hands-on execution, focusing on mitigating scaling challenges and designing resilient, fault-tolerant systems that can handle substantial workloads.What You’ll Do:Own & Execute: Take charge of writing and deploying production code for core services, leading the design and implementation of high-scale distributed systems.Architect for Scale: Make informed decisions that harmonize swift iteration with long-term system scalability and maintainability.Drive Initiatives: Spearhead projects that involve multiple services, including storage, compute, APIs, and blockchain infrastructure.Set the Standard: Create benchmarks for observability, reliability, and performance, while enhancing engineering quality through design reviews and RFCs.Technical Leadership: Serve as a technical anchor during critical incidents and mentor peers, sharing your depth of knowledge and clarity of thought.Optimize Velocity: Enhance the internal developer experience by refining tools, CI/CD pipelines, and service abstractions.

About PolymarketPolymarket stands as the leading prediction market globally, where insights meet investment—part betting, part future forecasting.As we accelerate our growth—with over $6 billion traded this year alone—we aspire to be a trusted source of information in global media. Join us in our mission to revolutionize how the world perceives truth.About the RoleWe are seeking a top-tier Infrastructure Engineer to enhance our engineering platform. This pivotal role involves designing, building, and managing the foundational systems that empower our diverse product offerings. You will play a crucial part in establishing developer workflows, CI/CD pipelines, and robust infrastructure that supports high-performance APIs and data services. Your expertise will guide significant technical decisions, shape system architecture, and implement solutions that prioritize efficiency, reliability, and sustainability.What You’ll DoWe are in search of a seasoned individual contributor passionate about optimizing essential infrastructure.Build & Automate Development Workflows. You will design and maintain infrastructure that standardizes our software development, versioning, testing, and deployment processes across various environments.Architect Scalable Systems. You will make informed architectural decisions, weighing risks, performance, costs, and maintainability.Power High-Performance Services. You will enhance the infrastructure that supports real-time APIs and low-latency data feeds.Develop Testing Infrastructure. You will construct reliable tooling for automated testing, encompassing unit, integration, and API levels.Ensure Availability & Reliability. You will oversee critical infrastructure to minimize downtime and mitigate failure risks.Move Fast Without Breaking Things. You will deliver high-quality solutions efficiently, showcasing a strong sense of ownership and attention to detail.Operate Autonomously. You will take initiative and make independent decisions without micromanagement.Collaborate Across Teams. You will work closely with engineers across the organization to address deployment, performance, and operational requirements.What We’re Looking For6+ years of hands-on experience in infrastructure engineering or related fields.Proficiency in cloud platforms (AWS, GCP, Azure) and container orchestration (Kubernetes).Strong knowledge of CI/CD tools and practices.Experience with database technologies and API design.Exceptional problem-solving skills and a collaborative mindset.