Senior/Staff Software Engineer - Application Platform

Join our dynamic team at flowlife as a Senior/Staff Software Engineer specializing in our Application Platform. In this role, you will take charge of designing, developing, and enhancing our core application platform, ensuring it meets the needs of our users and scales seamlessly.We are looking for a passionate engineer who thrives in a collaborative environ…

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 DecagonDecagon stands at the forefront of the conversational AI revolution, enabling brands to provide exceptional concierge-level customer experiences. Our cutting-edge technology empowers renowned enterprises such as Avis Budget Group, Block’s Cash App and Square, Chime, Oura Health, and Hunter Douglas to implement AI-driven agents. These agents facilitate personalized interactions across all communication channels including voice, chat, email, and SMS.Our vision is to transform the landscape of customer interactions, moving beyond traditional support tickets and hold music toward expedited resolutions, enriched conversations, and stronger relationships. We are proudly supported by prestigious investors such as a16z, Accel, Bain Capital Ventures, Coatue, and Index Ventures, all of whom share our ambitious vision.As an in-office company, we thrive on a collective commitment to excellence and speed. Our core values—Just Get It Done, Invent What Customers Want, Winner’s Mindset, and The Polymath Principle—guide our collaborative efforts and professional growth.About the TeamThe Infrastructure team is responsible for designing and maintaining the essential frameworks that drive Decagon’s operations, including networking, data management, machine learning serving, developer platforms, and real-time voice communication. We collaborate closely with product, data, and machine learning teams to create high-scale, low-latency systems that meet stringent service level objectives and offer exceptional developer experience.Our team focuses on five critical areas:Core Infrastructure: Our foundational cloud architecture encompasses networking, computing, storage, security, and infrastructure-as-code, ensuring reliability, scalability, and cost-effectiveness.Data Infrastructure: We develop streaming and batch data platforms that drive analytics and business intelligence while enabling customer-facing telemetry for both customer-managed and on-premises environments.Machine Learning Infrastructure: Our platforms support GPU and model serving for large language model inference, featuring multi-provider routing and capabilities for on-premises or air-gapped deployments.Developer Experience Platform: We focus on continuous integration and deployment (CI/CD), streamlined processes, and essential services that facilitate fast, safe, and consistent shipping across teams.Voice Infrastructure: Our telephony and WebRTC stack ensures ultra-low-latency, high-quality voice communication, supported by comprehensive observability.Our mission is to deliver extraordinary support experiences where AI agents collaborate with human operators to resolve challenges swiftly and accurately.About the RoleWe are seeking a Senior Infrastructure Engineer who will play a pivotal role in shaping our infrastructure landscape and enhancing the efficiency and performance of our systems.

About Us:At Fireworks AI, we are at the forefront of creating next-generation generative AI infrastructure. Our cutting-edge platform is recognized for delivering the highest-quality models with unparalleled speed and scalability in inference. Independently benchmarked as a leader in LLM inference speed, we drive significant advancements through innovative projects, including our proprietary function calling and multimodal models. As a Series C company valued at $4 billion and backed by leading investors such as Benchmark, Sequoia, Lightspeed, Index, and Evantic, we are a dynamic team of builders, comprised of veterans from Meta PyTorch and Google Vertex AI.The Role:We are seeking a talented Software Engineer to join our AI Infrastructure team. In this pivotal role, you will contribute to designing and developing the foundational systems that power Fireworks AI’s generative AI platform. Your focus will be on building robust infrastructure and tools that guarantee the reliability, performance, quality, and availability of our AI systems.Our mission is to establish Fireworks AI as the most dependable and user-friendly generative AI platform globally. You will collaborate closely with our cloud infrastructure, product, and performance teams to create infrastructure solutions that connect our customers with the high-performance proprietary Fireworks inference engine.Key Responsibilities:Design and develop scalable backend infrastructure supporting distributed training, inference, and data pipelines.Build and maintain essential backend services, including LLM CI/CD pipelines, control planes, and model serving systems.Enhance performance optimization, cost efficiency, and reliability across compute, storage, and networking layers.Create frameworks and safeguards to ensure Fireworks AI maintains the highest model quality in the industry.Work alongside performance, training, and product teams to translate research and product requirements into effective infrastructure solutions.Engage in code reviews, technical discussions, and continuous integration and deployment processes.

The New York Times is on the lookout for a dynamic Principal Software Engineer to spearhead the architecture and advancement of our data and machine learning infrastructure. This pivotal role will lay the groundwork for innovative data-driven products, analytics, and AI applications. You will be responsible for designing robust systems that facilitate large-scale data processing, reliable pipelines, and efficient machine learning development, including feature engineering and real-time model serving. As a principal engineer, you will collaborate closely with product, data science, and platform teams to establish the technical direction, promote the adoption of reusable frameworks, and mentor engineers throughout the organization. Your focus will be on ensuring that both data and ML platforms are scalable, reliable, cost-efficient, and compliant with privacy and governance standards. Our core Data Platform integrates a data lake on AWS S3 with Apache Iceberg for enhanced reliability, while data ingestion leverages Confluent Kafka for real-time streaming and Fivetran for file ingestion. The transformation layer utilizes Apache Flink for stream processing, AWS Glue (Spark) for core ETL, and dbt/Athena for analytical data models. The platform efficiently serves data through specialized data stores, including Amazon DynamoDB for low-latency applications and Google BigQuery as the primary analytics engine. This is a hybrid role based in our New York City headquarters, reporting directly to the Sr. Director of Engineering. Expect to work in the office 2+ days per week.

Role overview Harvey seeks a Staff Software Engineer to take a lead role in shaping its AI Platform. Based in New York, this position focuses on designing, developing, and launching software solutions that use artificial intelligence technologies. What you will do Lead the architecture and implementation of projects that rely on AI technologies Collaborate with engineering, product, and other teams to enhance and grow the platform Maintain high software quality and ensure solutions align with user needs throughout development Location This role is located in New York.

About Aura: At Aura, we are dedicated to creating a world where people maintain genuine connections with their loved ones every day. Our innovative digital frames have transformed into a private social network, enabling users to effortlessly share photos and videos with family and friends through our user-friendly apps, all displayed beautifully on premium Wi-Fi frames. Aura is proud to be the most recommended digital frame by independent reviewers and the only one endorsed by The New York Times Wirecutter. With millions of frames in use globally, we are constantly pushing the boundaries of innovation, introducing new products and software features, and expanding into new markets, driving profitable growth. Our network of millions of digital picture frames delivers photos to users worldwide, especially during peak gifting seasons, requiring our infrastructure to be scalable and robust. We leverage advanced computer vision and machine learning technologies to process hundreds of millions of photos, enhancing how users discover, arrange, and display their cherished memories. Our commitment to continuous improvement in both hardware and software is unwavering. Role: Join our dynamic infrastructure engineering team located in New York City and San Francisco, where you will design, develop, and maintain adaptable backend systems for a Rails API. These systems are engineered to scale efficiently while supporting our rapidly evolving product line and upholding stringent standards for performance, security, and cost-effectiveness. What you’ll do: Architect and implement sharding for our PostgreSQL backed Rails API Lead initiatives focused on enhancing system reliability, which includes monitoring, alerting, and incident response Optimize application and database expenditures

Join a Revolutionary CompanyAt Palantir, we create cutting-edge software that enables data-driven decision-making and operational excellence. Our platforms empower organizations to tackle critical challenges, from developing lifesaving pharmaceuticals to predicting supply chain disruptions and locating missing children.About the RoleAs a Senior Software Engineer focusing on Network Infrastructure, you will become part of a dedicated team committed to transforming a complex Kubernetes networking tech stack into an intuitive, reliable, and secure environment for users. Your contributions will enhance the management of both north-south and east-west traffic flows across hundreds of zero-trust Kubernetes clusters that support diverse workloads.Your role will involve tackling unique technical challenges at the intersection of scalability, usability, and security. You will enable dynamic control over transient infrastructure, managing tens of thousands of firewall rules across thousands of short-lived pods under multiple compliance frameworks. Utilizing CNCF tools such as Envoy and Cilium along with Kubernetes controllers, you will play a pivotal role in one of the most demanding technical landscapes at Palantir.

Harvey develops AI-driven solutions for legal and professional services, serving over 1,000 organizations in more than 60 countries. The company is growing rapidly and has strong support from leading investors. Harvey’s team values ownership, quick decision-making, and close collaboration. Engineers work side by side with leadership and customers to address practical challenges. The company operates in person in New York City and provides relocation support for new hires. Role overview The Staff Software Engineer - Core Infrastructure joins a team responsible for designing, building, and scaling Harvey’s core infrastructure. This platform handles billions of prompt tokens and millions of daily requests, forming the backbone of Harvey’s global legal AI services. The work involves both creating new systems and maintaining high operational standards. Reliability, scalability, and security are central as Harvey continues to expand its reach among top law firms and professional service providers. This is a full-time, in-person position based in New York City. Relocation assistance is available. What you will do Design and build scalable, fault-tolerant infrastructure systems that support Harvey’s AI platform across multiple cloud regions. Take ownership of and improve multi-cloud infrastructure (Azure, GCP), focusing on Kubernetes orchestration, networking, and container management. Lead technical projects in areas such as observability, incident response, and performance optimization.

About Gecko RoboticsAt Gecko Robotics, we are dedicated to empowering essential organizations around the globe to maintain the availability, reliability, and sustainability of their critical infrastructure. Our innovative solutions integrate wall-climbing robots, state-of-the-art sensors, and an AI-driven data platform, offering our clients unparalleled insights into the present and future condition of their physical assets. This capability facilitates real-time decision-making, enhances operational efficiency and safety, fosters mission readiness, and safeguards both the environment and society from the consequences of infrastructure failures.Position OverviewJoin our Cloud Platform team, where our mission is to enable software engineers to work without hindrances, ultimately accelerating our ability to deliver outstanding products. We achieve this by streamlining software development processes, focusing on automation, shared libraries, and advanced DevOps tools, allowing engineers to concentrate on the unique challenges presented by Gecko Robotics.This position will take lead in refining our cloud architecture and automation, particularly within our government cloud environment. You will be responsible for ensuring the maintainability and usability of our intricate single-tenant deployments, which are inherently complex and compliance-oriented. Your role will involve simplifying this complexity through abstraction and automation, enabling product engineers to deploy and manage confidently without needing to become experts in government cloud compliance.Key ResponsibilitiesDevelop and own the strategic vision for maintaining and scaling our diverse single-tenant environments, currently hosted in Google Government Cloud and Azure, with potential future expansion to AWS.Automate and standardize the variances across our cloud environments to alleviate the burden of compliance regulations and unique requirements from our developers.Create robust Infrastructure as Code (IaC) modules and shared libraries that provide benefits across all environments, minimizing redundancy.Collaborate closely with fellow Cloud Platform team members to fulfill our goal of making software development at Gecko seamless and efficient. Current responsibilities include:Providing expertise on cloud technologies and acting as internal consultants.Ensuring a smooth, intuitive, and automated CI/CD pipeline.Managing customer authentication processes.Overseeing permissions management.

Join a Transformative CompanyAt Palantir, we are pioneers in developing cutting-edge software that drives data-informed decision-making and operational excellence. Our platforms empower organizations to achieve remarkable outcomes, from accelerating drug discovery to enhancing disaster response capabilities.About the RoleAs a Software Engineer on our Environment Platform team, you will play a pivotal role in shaping the strategy for containerization across our suite of software platforms - Foundry, Gotham, and Apollo. You will have the opportunity to lead initiatives that enable our diverse customer base to leverage these technologies effectively. Your contributions will include developing sophisticated, reliable APIs powered by Kubernetes (K8s) controllers, which facilitate seamless integration between raw Kubernetes clusters and feature-rich, infrastructure-agnostic runtimes capable of scaling to meet the demands of numerous specialized microservices. You will collaborate with a passionate, multidisciplinary team eager to innovate and push the boundaries of what’s possible.

Join Hudson River Trading (HRT) as a Senior Software Engineer specializing in our Treasury Infrastructure. At HRT, our developers work in small, dynamic teams that are highly productive and focused on enhancing the technology driving global trading. The code you create is integral to our operations. Collaborating closely with Treasury Quantitative Researchers and our Funding Team, you will design and build HRT's Treasury Optimization and Research Platform. We are in search of exceptional programmers who are passionate about coding and tackling complex challenges. Our culture thrives on collaboration, and we excel in a performance-driven environment. You will face exciting challenges brought on by the evolving financial markets and contribute to critical software in a fast-paced, real-time setting.

Join Major League Baseball as a Senior Software Engineer on our Web Platform Architecture team. This innovative team is dedicated to designing, developing, and maintaining the web platform that powers MLB.com and our diverse range of digital products. Your contributions will encompass our cloud infrastructure, CI/CD systems, edge computing solutions, and essential services that empower our product engineering teams to deliver features safely and rapidly to millions of users. In this role, you will be instrumental in enhancing the reliability, scalability, and performance of our digital offerings. This hands-on position involves coding and system building, including core service development in Node.js, designing solutions on our edge network, and implementing automated infrastructure using Terraform. Experience with CDNs like Fastly and Cloudflare will be key as you collaborate with cross-functional teams to boost security, performance, and developer experience across our web services.

About KalshiKalshi is pioneering a groundbreaking sector in finance: prediction markets. Our platform empowers individuals to trade on the outcomes of various events, transforming any future question into a financial opportunity. After years of advocacy, we successfully legalized prediction markets in the U.S., establishing ourselves as the fastest-growing financial market in the nation, with thousands of markets spanning politics, economics, finance, weather, technology, AI, culture, and beyond.We envision a world where prediction markets become the largest financial marketplace globally, enabling anyone to engage and invest in the future.Our vision: To construct the largest financial market on Earth.Our mission: To bring greater truth to the world through the power of markets.At Kalshi, our culture revolves around hiring exceptional talent, fostering hard work, and enjoying the journey together. We seek ambitious and remarkable individuals to join our compact team and help build the next generation of financial markets.Your RoleAs a vital member of Kalshi, you will be instrumental in crafting a next-generation financial ecosystem—akin to the NYSE or CME—starting from the ground up. You will engage with various platforms, including core exchange systems, clearinghouses, API infrastructure, and broker connectivity. In our agile team environment, your responsibilities will scale quickly, making your contributions significant and visible.Key ResponsibilitiesDevelop order matching and trade execution algorithms and data structures.Create high-performance data feeds and trading APIs for clients.Design robust clearing systems with high availability, including margining and collateral management.Lead integration efforts with external market makers, brokers, and hedge funds.Conduct stress tests on large-scale systems to ensure their durability and maintainability.Optimize database access patterns and service algorithms for enhanced performance.Innovate new market structures, including non-binary markets and futures.Maintain close contact with customers to define features, launch products, and iterate based on feedback.Deliver rapid and quality deployments, ensuring high standards in your work.

At StubHub, we are dedicated to transforming the live event experience for fans around the world. Whether it’s their first concert or a long-awaited game, we aim to create an unforgettable journey from the moment they seek tickets until they enter the venue. Our commitment extends to our sellers too, from individual fans to large promoters, ensuring StubHub remains the safest and most convenient platform for ticket transactions globally.Join Our Team:We are on the lookout for an exceptional Senior Software Engineer to become a key member of our Platform Runtime team. In this dynamic role, you will be integral in designing, developing, and sustaining a comprehensive suite of SDKs, services, shared packages, and tools that empower our engineering teams, enhancing productivity and operational efficiency across the organization.About the Team:The Platform Runtime team is committed to creating a seamless, high-performance runtime environment that supports numerous services at StubHub. We prioritize implementing best practices to address essential engineering challenges, including configuration management, connectivity, caching, and messaging.Location: Hybrid (3 days in office/2 days remote) – Century City, CA or Aliso Viejo, CA or New York, NYYour Responsibilities:Design and develop SDKs, services, shared packages, and tools to improve engineering efficiency and productivity.Create an intuitive, cross-language performant runtime environment to serve as a foundation for business/customer-facing services.Architect and implement high-performance, scalable services utilized by internal stakeholders.Act as a subject matter expert in distributed caching and messaging, showcasing a profound understanding of relevant design patterns.Collaborate with engineering teams to identify technical inefficiencies and propose scalable solutions and methodologies.Lead initiatives aimed at boosting performance and scalability across our platform.Promote best practices in software development, ensuring high standards of quality and efficiency.

Join a Transformative CompanyAt Palantir, we develop cutting-edge software solutions that empower our partners to make data-driven decisions that can change lives. Our innovative platforms are being used to accelerate drug discovery, anticipate supply chain challenges, and assist in locating missing children, among other impactful initiatives.Your ImpactAre you enthusiastic about enhancing software quality, performance, and fostering the growth of fellow engineers?As a Software Engineer within Palantir’s Foundations organization, you will play a crucial role in creating scalable software solutions that reshape how organizations leverage data. You will have the unique opportunity to accelerate your career as you develop the foundational infrastructure that powers Palantir Foundry, Palantir Gotham, and Palantir Apollo platforms, while driving initiatives to enhance our engineering efficiency and output quality.In our Foundations organization, small teams of engineers specialize in four key areas of infrastructure:• Backend Infrastructure: Focuses on optimizing backend developer productivity and ensuring robust RESTful services across Palantir’s platforms. You will design systems that simplify backend service development and maintain comprehensive audit logs for user actions.• Developer Infrastructure: Manages the systems that support our entire developer ecosystem, incorporating both established tools like GitHub and our custom solutions for overseeing automated changes in numerous repositories.• Frontend Infrastructure: Enhances frontend developer efficiency across the entire stack, from the Integrated Development Environment (IDE) to the user interface in browsers. You will be instrumental in developing necessary infrastructure for frontend applications, including feature flags and internationalization, while ensuring efficient build processes for extensive TypeScript codebases.• Storage Infrastructure: Innovates Palantir’s database and search capabilities, supporting storage solutions across diverse environments, including cloud and on-premise settings. Your role will be pivotal in advancing our technologies to accommodate growing data demands and improving database functionalities for specific workflows.

Overview Role: Lead Software Engineer - DevOps and Infrastructure On-site role at our New York City headquarters, 5 days a week Annual base salary: $175,000 - $250,000 Equity: Competitive initial equity package along with refreshers Minimum of 3 years of relevant experience required About Stratos Labs Stratos Labs is revolutionizing commodity risk management for the $10 trillion physical economy. Our innovative platform merges real-time market data with AI-driven exposure modeling and automated trade generation, empowering operators with precise tools to manage volatility. From instantaneous trade execution to ongoing monitoring, alerts, and actionable recommendations, Stratos Labs transforms complex market risks into a seamless, always-on hedging solution. Founded in 2023 by a former macro market-maker from Barclays and a trading systems engineer from Coinbase, we have successfully raised over $20 million in funding from esteemed investors including Andreessen Horowitz (a16z), Crucible Capital, Neo, and DST Global. Key Responsibilities Manage and Optimize AWS Cloud: Take complete ownership of our AWS environment, architecting, scaling, and optimizing our cloud infrastructure to enable new services while ensuring it is cost-effective and integrated with our core trading systems. Infrastructure Architecture: Lead the transition to a full Infrastructure as Code (IaC) model by developing a sophisticated Terraform stack that eliminates manual configurations. Security and Compliance: Act as the gatekeeper for our environments, managing container security, CVE remediation, and ensuring compliance with SOC2 standards without hindering team productivity. Observability Strategy: Design a comprehensive monitoring strategy to proactively identify bottlenecks before they lead to outages. CI/CD Pipeline Refinement: Enhance our GitHub Actions and CI/CD workflows to streamline the process of deploying Go, C++, and TypeScript services from commit to production. Reliability and Incident Response: Participate in on-call rotations, conducting thorough post-mortems to ensure that recurring issues are resolved effectively.

Join Speechify as a Software Engineer focused on Data Infrastructure and Acquisition, where you'll play a crucial role in developing innovative solutions that enhance our data management capabilities. In this dynamic position, you will collaborate with cross-functional teams to design, implement, and maintain robust data pipelines, ensuring the efficiency and reliability of our data infrastructure.

Verve For Advertisers helps brands and agencies reach audiences at pivotal moments, using a combination of on-site search intent data, direct SDK integrations from top apps, and partnerships with over 3 million websites and LLMs. Their platform focuses on understanding both consumer actions and motivations, supporting precise audience targeting and actionable insights across a wide range of channels. Role overview This contract Platform Engineer position sits within the dev ops team. The role centers on supporting, managing, and scaling a variety of technical projects. Flexibility is built in: work fully remote from anywhere in the US or abroad. Collaboration with the US-based engineering team during their business hours is required. Key details Title: Platform Engineer Type: Contract Location: Remote (US or international) Collaboration: Availability during US business hours is essential

OverviewAt bettermoney, we are pioneering the future of stablecoin integration into everyday payments. Our mission is to create a stablecoin clearinghouse that enables seamless transactions, transforming stablecoins into a reliable form of currency rather than mere trading assets. We are in search of a Platform Engineer who has a passion for precision and performance. Join us in enhancing our testing framework to accelerate development while ensuring reliability. Your insights on improving efficiency will help us develop internal tools, development infrastructure, and automation, enabling our compact team to operate with the efficiency of a larger organization.About UsAt bettermoney, we are firm believers in the potential of stablecoins as the foundation for superior payment solutions. We recognize significant structural challenges that impede stablecoin adoption, and we are committed to addressing these issues, starting with our innovative clearinghouse. Based in New York City, our dynamic team has successfully secured $10M in funding from a16z Crypto and other esteemed partners, and we are on a mission to revolutionize currency.Your RoleTake ownership of the test harness for our foundational systems, focusing on integration tests, formal verification, and chaos testing for our ledger, netting algorithm, money transfers, and payment prioritization.Establish correctness assurances that empower the team to deliver faster. By proving accuracy, we can advance with confidence.Design and implement internal tools that enhance our productivity exponentially.Manage CI/CD pipelines, development environments, and deployment infrastructure to streamline the transition from code to production in a safe and efficient manner.Implement observability features such as logging, tracing, and alerting, enabling us to identify issues proactively before our customers notice.And, of course, handle the dishes.Who We SeekA minimum of 3 years of experience in platform engineering, developer tooling, infrastructure, or reliability engineering.Proven experience in developing testing infrastructure for systems where correctness is paramount, such as payments, trading, or ledgers.Familiarity with formal verification, property-based testing, or chaos engineering is highly desirable.A strong vision for what effective internal tooling should encompass, demonstrated by your proactive development efforts.Comfortable navigating ambiguity, viewing it as an opportunity for ownership and innovation.Our Core ValuesChallenge the status quo - we refuse to accept a payment process that takes days and incurs excessive costs.