Senior Software Engineer - Java (Domains)

At Squarespace, we empower millions of creators—from artists to entrepreneurs—to establish a compelling online presence that resonates with their customers. Every journey begins with securing a domain name, and we are excited to invite a talented Senior Software Engineer to join our team in New York City, working in a hybrid model three days per week. We are currently expanding our Domains teams: Domains Product: This team oversees the entire lifecycle of domain management, from purchase to renewal. Our goal is to provide an intuitive, high-performance customer experience that enables users of all expertise levels to navigate domain management effortlessly. Domains Growth: Responsible for driving growth across all products within the Domains group, this team manages the user search experience on our website, pricing strategies, and conversion optimization. Your Responsibilities Include: Designing, developing, and maintaining scalable backend services and APIs using Java. Leading technical discussions, proposing solutions, and making informed architectural choices aligned with our strategic vision. Collaborating with product managers and frontend engineers to translate product requirements into technical specifications, delivering impactful user experiences. Setting standards of technical excellence through RFCs and code review processes. Mentoring junior engineers and fostering a culture of technical excellence within the team.

At Squarespace, we are transforming the way individuals realize their visions online. Our Research and Development Engineering teams are central to this mission, crafting seamless and powerful experiences that our customers depend on daily. As a Senior Backend Engineer, you will join a collaborative and high-impact team dedicated to developing scalable and reliable systems behind some of the web's most intuitive tools. Whether you bring three years or two decades of experience, if you are driven by a passion for designing elegant solutions, we invite you to connect with us. This is a hybrid position, requiring three days per week in our NYC office, reporting directly to the Engineering Team Manager. We are actively hiring across multiple significant R&D teams. Based on your expertise and interests, you may have the opportunity to join one of the following: Identity and Access Management (IAM) - responsible for developing and maintaining the fundamental systems that ensure secure access across our platform for both customers and internal teams, focusing on core functionalities such as authentication, authorization, and session management. Communications Platform - provides tools and services that facilitate effortless communication between our product teams and customers at scale. Our goal is to create user-friendly and impactful platforms. This role is high-visibility and high-impact as our work is utilized by a majority of product teams. Your Responsibilities Include: Developing scalable backend services using Java and related technologies. Writing clean, efficient code that supports high-traffic, production-ready systems. Contributing to design decisions and taking part in architectural discussions. Collaborating with engineers, designers, and product managers. Creating features from initial concept through to implementation and launch.

As a Senior Product Designer specializing in Domains at Squarespace, you will play a crucial role in shaping user experiences that are both intuitive and visually compelling. You will collaborate with cross-functional teams, including product management and engineering, to design innovative solutions that elevate our users' experience. Your design expertise will guide the development of domain-related features, ensuring they align with our brand's vision and user needs.

Role Overview Squarespace is hiring a Senior Machine Learning Engineer to strengthen our Domain Search experience. This position is based in New York City. What You Will Do Design and build algorithms that power domain search and discovery Develop predictive models to improve search relevance and user engagement Apply data analysis to identify opportunities for product improvement Work closely with engineers, product managers, and other teams to deliver solutions What We’re Looking For Strong experience in machine learning and data analysis Background in designing and implementing production ML systems Ability to collaborate across disciplines and communicate technical concepts

Join Flex, a rapidly growing FinTech company headquartered in New York City, as we revolutionize the rent payment process. It's 2026, and we believe that paying rent should be affordable, flexible, and hassle-free. Our mission is to empower renters with the ability to pay their rent on a schedule that aligns with their financial needs. After establishing a strong foundation of investor support and a dedicated user base, we are seeking passionate individuals to join our team and help us drive our mission forward.As a Senior Fullstack Software Engineer, you will play a crucial role in propelling our company’s growth. Your expertise will be vital in developing and scaling our platform and application experiences, ultimately facilitating our ambitious goal of achieving 10x growth.

Join a Trailblazer in Conversation IntelligenceAt Rilla, we are pioneering the future of conversation intelligence software tailored for offline commerce. Our innovative platform meticulously records, analyzes, and indexes conversations, delivering exceptional insights that empower critical physical businesses—the backbone of our economy.Our mission? To equip traditional industries with cutting-edge technologies that have propelled the most innovative companies of the 21st century. This vision has catapulted Rilla into one of the fastest-growing companies in history, achieving a remarkable growth trajectory from $0 to $40M in just 3.5 years, maintaining a 15% month-on-month growth rate, boasting a net revenue retention above 170%, an NPS that surpasses that of the iPhone, and achieving profitability.Your RoleAs a Senior Software Engineer at Rilla, you will be at the forefront of our engineering efforts, architecting and deploying features across the entire stack with unparalleled speed. Daily, you will develop end-to-end workflows, transition them into production, and tackle real-world challenges at a grand scale.In this pivotal role, you will set the standard for code quality and decision-making, fostering a world-class engineering culture as we scale. As Rilla expands tenfold, your responsibilities and influence will grow correspondingly, as you build the tools, frameworks, and platforms that empower both you and Rilla to thrive exponentially.Are you someone who thrives on obsession? Do you dream of becoming a founder or a leader, harnessing AI to revolutionize the physical world? We believe that Rilla is the ideal environment for you to learn and grow alongside the best peers in the industry.Technologies We LeverageA variety of languages and frameworks such as React, React Native, TypeScript, and Python.Open-source technologies including Node.js, PostgreSQL, Turborepo, Lodash, and Zod.Standard industry build tools like GitHub Actions, Terraform, and Spacelift.Our Core ValuesAn infinite learner who is perpetually curious.A customer-centric individual who prioritizes truly solving customer pain points over superficial metrics.A team player with a winning mindset, embracing accountability, collaborative learning, and constructive feedback.Deep empathy for our customers, recognizing that they operate in the real world and require understanding to devise effective solutions.Fearless in the face of failure, viewing risks as opportunities for growth and improvement.

Role overview MongoDB, Inc. is seeking a Senior Software Engineer based in Austin or New York City. This position involves designing and building software solutions within a collaborative engineering team. Senior Software Engineers at MongoDB play a key role in shaping system architecture and maintaining high standards for software quality and reliability. What you will do Design and develop software solutions for MongoDB products and services Collaborate with fellow engineers to address complex technical challenges Contribute to important system architecture decisions Apply coding best practices to create maintainable and scalable code Support the delivery of reliable, high-quality software releases Location Austin, TX New York City, NY

About FarsightFarsight is a pioneering AI platform tailored for the financial services sector, revolutionizing how investment banks and private equity firms automate intricate workflows. Currently, financial institutions spend around 80% of their time manually gathering information and drafting materials before refining their presentations, models, and pitches. Our solutions not only reclaim that valuable time but also enhance their outputs with insights that would be unattainable without our advanced financial AI technology.We process vast amounts of both public and private data, ensuring the delivery of precise and auditable materials in a complex landscape where traditional AI struggles. Regularly, our product produces results that exceed the capabilities of current employees, with clients expressing satisfaction such as:“I’m more than willing to let my analysts never use Powerpoint again.”“We pay consultants millions annually to guide our AI strategies. They have no idea what Farsight is capable of.”Our mission is to transform the operational landscape of financial services, effectively interweaving AI into the essential fabric of every corporation worldwide.TeamWe are an enthusiastic team committed to crafting technology that inspires. Each member contributes in various roles, including development, sales, infrastructure, design, product innovation, and AI research. We expect new hires to possess the experience or passion to take on diverse responsibilities.Our team boasts a rich background from top financial institutions such as Evercore, General Atlantic, and Menlo Ventures, combined with robust engineering and AI expertise from companies like Amazon, Hugging Face, and the MIT Media Lab. Having learned the intricacies of building successful startups as founders and founding engineers, we prioritize attracting the best talent to elevate our company further.Our operations are entirely based in Manhattan, New York City, with in-person attendance required four days a week (Fridays are remote).

Traba connects businesses with skilled industrial workers through technology designed to streamline labor management and improve supply chain efficiency. The company offers mobile apps for workers and businesses, along with web platforms for clients and internal teams. Backed by investors such as Founders Fund, Khosla Ventures, and General Catalyst, Traba is focused on building solutions that help organizations operate more effectively. Role overview The Senior Software Engineer joins Traba’s founding team in New York City. This position involves hands-on development for both mobile and web applications, supporting products used by workers, business clients, and internal teams. Working closely with the CTO, the engineer will help shape the technical architecture and influence the product roadmap, contributing to a scalable technology platform for the future. What you will do Develop and maintain mobile applications for workers and business users Build and enhance web platforms for business clients and internal operations Collaborate with the CTO on architectural decisions and long-term technical planning Help define and refine the product roadmap Contribute to building a technology platform that supports growth and scalability Location This position is based in New York City, NY.

At January, we are on a mission to revolutionize consumer finance by infusing humanity into the financial landscape. Our innovative, data-driven solutions empower financial institutions to enhance their collection processes, providing borrowers with clear, compassionate pathways to regain their financial footing. We are not merely increasing access to credit; we are restoring dignity and enabling millions to pursue financial independence.Role OverviewWe are seeking dynamic Senior Software Engineers to play a pivotal role in shaping the future of January’s technology platform. You will have the opportunity to apply to our organization as a whole, allowing us to match you with the team where your unique skills and interests will create the greatest impact.As a Senior Engineer at January, you will do more than just write code. You will take ownership of product outcomes, set the technical direction, and mentor fellow engineers while building systems that enhance the financial well-being of millions.Current teams looking for talent include:Borrower Acquisition: Scaling our communication platforms to ensure that the right borrowers receive the right message at the right time.Borrower Activation: Developing features in the Borrower Portal that assist individuals in resolving their accounts and achieving financial stability.Compliance and Money Operations: Ensuring our financial systems are accurate, scalable, and compliant while facilitating efficient money movement at scale.Your ResponsibilitiesDesign and implement highly scalable systems that serve millions of borrowers and financial partners.Contribute to architectural design and roadmap planning, shaping the direction of core projects.Lead by example through engineering excellence, advocating for best practices and maintaining high code quality.Mentor junior engineers to enhance the team's skills and capabilities.Collaborate across departments, working closely with Product, Design, and Operations to deliver impactful solutions.Propose and refine company-wide engineering processes in collaboration with other senior leaders.Qualifications5+ years of professional software development experience.Strong technical proficiency (experience in Python, React, Postgres, AWS is desirable; we welcome diverse backgrounds and are willing to teach these technologies).Exceptional problem-solving abilities and a passion for creating impactful solutions.Experience in designing and implementing scalable systems.Excellent communication skills with the ability to collaborate effectively across teams.

The Atlas Growth team is a dedicated group of cloud engineers committed to supporting our customers throughout their application development journey. We handle everything from cluster configuration and data modeling to load testing and managing production workloads at scale. Utilizing our proprietary experiments platform, we validate new features rapidly, ensuring that we only release enhancements that benefit our users. Our engineers collaborate in cross-functional squads consisting of product, design, analytics, and research teams, all focused on achieving specific performance metrics such as retention.Atlas Growth 2 is responsible for creating customer-facing features within the Atlas platform and works alongside other teams within the Growth engineering division. Recent initiatives have included developing an AI Chatbot for cluster creation, implementing a recommendation system for improved database performance, and designing a pricing page optimized for conversion rates.This role is based in our New York City office and supports both our Flexible and In-Office working models.

About the Role:Parker is dedicated to a bold mission: empowering individuals to achieve financial independence. We believe that by providing independent business owners with essential financial tools, we can help them scale their operations profitably.Our flagship product merges a virtual corporate card with financial software designed for profitability, enabling eCommerce merchants to accelerate growth while effectively managing their margins.To date, we have successfully raised over $180M from top-tier investors, including Valar Ventures, Y Combinator, SVB, and industry pioneers such as Solomon Hykes (Docker), Paul Buchheit (Gmail), Paul Graham (Y Combinator), and Robert Leshner (Compound).As a dynamic Series B fintech, we are rapidly expanding, boasting a robust product-market fit, a burgeoning customer base, and a team driven by technical excellence and impactful solutions.We are seeking a Senior Software Engineer – Backend to architect, develop, and scale the critical systems that underpin Parker’s financial platform. In this pivotal leadership role, you will influence backend architecture, data infrastructure, and engineering best practices during our growth phase.You will work collaboratively with Product, Infrastructure, and Data teams to deliver high-performance, reliable systems that handle billions in transactions and empower thousands of merchants. This high-impact position is ideal for engineers who thrive on ownership, relish the challenge of complex systems, and prioritize elegant, maintainable solutions.What You’ll Do:Design and scale backend services that drive Parker’s financial products and APIs.Lead architectural strategies to guarantee performance, reliability, and scalability across our systems.Develop and maintain services in a modern cloud-native environment (Node.js, PostgreSQL, Docker, Kubernetes, AWS).Collaborate with product and infrastructure teams to create secure, user-friendly APIs and data models.Promote engineering excellence through code reviews, mentorship, and architectural guidance.Identify performance issues and spearhead initiatives to enhance reliability, observability, and system design.Contribute to the advancement of Parker’s technical roadmap and long-term engineering vision.

Join posh as a Senior Software Engineer - Growth, where you will play a pivotal role in driving our growth initiatives. You will collaborate with cross-functional teams to develop innovative software solutions that enhance user experience and drive engagement. We are looking for a passionate engineer who thrives in a fast-paced environment and is eager to contribute to our dynamic team.

Reddit is a vibrant ecosystem of communities centered around shared interests, fostering authentic conversations that matter. With over 100,000 active communities and approximately 116 million daily unique visitors, Reddit stands as one of the premier platforms for information exchange on the internet. To learn more, please visit www.redditinc.com.The Quality Engineering (QE) team at Reddit is in search of a talented Senior Software Engineer to join our Android Test Engineering group. In this role, you will collaborate closely with cross-functional teams to design and develop innovative tools and comprehensive testing frameworks that uphold the highest quality standards. Our mission is to empower all engineering teams at Reddit by providing robust testing solutions that drive quality across the software development lifecycle.

At Bubble, our mission is clear: we strive to empower everyone to create software. We believe that every idea deserves a chance to become a reality, which is why we are dedicated to making software creation accessible to all. Our innovative AI visual development platform allows anyone—whether a first-time entrepreneur or part of a large enterprise team—to transform an idea from concept to a fully functional, scalable application across web, iOS, and Android. And the best part? You can do it all without writing or managing a single line of code.As the only comprehensive full-stack, cross-device no-code platform in existence, Bubble serves over 5 million users in more than 100 countries, breaking the barriers to entrepreneurship and innovation worldwide.Our Achievements:Our product is not just functional; it’s thriving. Entire VC-backed companies have been successfully built using Bubble. After discovering product-market fit and eight years of bootstrapping, we secured a $100 million Series A investment and established ourselves as one of the fastest-growing companies in New York’s tech ecosystem.With Bubble, you can build virtually anything—and our community exemplifies this. Beyond merely launching products, users are transforming their visions into real businesses. For instance, Mailead turned a $10,000 investment in a Bubble product into a $2 million valuation, while Faceless.video achieved over $1 million in annual recurring revenue in under a year, among numerous other success stories.About Our Team:We are expanding our AI Engineering Team to pioneer next-generation AI-powered development workflows. Our objective is to facilitate AI-assisted full-stack development, empowering users to describe their applications in natural language while AI generates, modifies, and enhances their apps seamlessly. As a Senior AI Software Engineer, you will play a key role in shaping and developing the future of AI-powered development at Bubble. Your responsibilities will include working on LLM-driven product features, designing agentic workflows, and developing private models trained on proprietary Bubble datasets. Collaboration with product, infrastructure, and research teams will be essential as we push the boundaries of AI-driven development.

Squarespace seeks a Director of Marketing and Growth to lead strategy for the Domains division. This senior role focuses on customer acquisition and strengthening brand presence. The position is open to candidates based in New York City or working remotely within the United States. Key responsibilities Create and execute marketing strategies informed by data to expand the Domains business Partner with teams across Squarespace to align campaigns and initiatives Lead projects aimed at raising awareness and increasing adoption of Squarespace domain offerings Leverage knowledge of the market to help the Domains division compete and grow Requirements Proven experience guiding marketing strategy in a competitive setting Strong foundation in data-driven decision making Demonstrated ability to collaborate across departments and influence outcomes Creative approach with a record of achieving business growth

Role Overview The City of New York is hiring a Senior Software Engineer to help build and maintain digital services for millions of residents. This role focuses on designing, developing, and supporting software solutions that address a wide range of community needs across the city.

Role overview Betterment seeks a Senior Software Engineer to join the team at its New York City headquarters. Senior engineers at Betterment play a key role in building software that helps people manage their finances more effectively. This position involves close collaboration with peers to shape the future of personal finance technology. What you will do Work with fellow engineers to design and launch new features for the Betterment platform Create solutions that enhance the user experience Help build scalable systems to support the company’s growth Write code that is both high-quality and maintainable Requirements Background in building software products, preferably within finance or technology sectors Ability to work well in a collaborative environment, including periods of rapid development Interest in technology and financial services

About AKASAAt AKASA, we are on a transformative journey to redefine healthcare through the power of artificial intelligence. As a trailblazer in generative AI solutions tailored for the healthcare revenue cycle, we empower health systems to accurately capture and relay the complete patient clinical journey. By enhancing operational efficiency, we enable these systems to prioritize what truly matters: delivering exceptional patient care. With over $205 million raised in funding from esteemed investors like Andreessen Horowitz, BOND, and Costanoa Ventures, our future is bright.Now is the most thrilling time to become part of AKASA. Since launching our innovative AI-native product suite in 2024, revenue bookings have surged over 20 times. We have set records by closing the largest deals in our company’s history three times in a row, driven by the substantial advancements we've made in clinical quality and documentation accuracy—two critical areas for health system leaders.Our implementations have garnered national attention, being recognized as "one of the most comprehensive real-world applications of GenAI in healthcare finance to date" (link). Our clientele represents over $120 billion in net patient revenue and includes pioneering health systems like Cleveland Clinic, Duke, Stanford, and Johns Hopkins.Recently, we have been honored with accolades such as being named the #1 most promising healthcare RCM startup of 2025 by Black Book Market Research and listed among the fastest-growing GenAI startups to watch by AIM Research. Our CEO has been recognized as one of the “Top 50 Healthcare Technology CEOs” by the Healthcare Technology Report, and we have proudly maintained our status as a “Great Place to Work” for five consecutive years.Join us as we build on this momentum to redefine the possibilities within healthcare. We seek exceptional talent to help accelerate this mission.About the RoleAs a Senior Backend Software Engineer, you will develop AI-driven solutions for our Clinical Documentation and Medical Coding suite. Collaborating closely with product, design, and machine learning teams, you will design and implement services, APIs, and tools that enhance our SaaS offerings. You will have the opportunity to work on groundbreaking projects that directly impact healthcare delivery.

At GPTZero, we are dedicated to enhancing trust and transparency across the internet. As the foremost AI detection platform, we provide essential tools for educators, students, journalists, marketers, and writers to effectively navigate the complexities of AI-generated content. With millions of users and institutions depending on our solutions, we are creating a pioneering company that sits at the convergence of AI and information integrity.Our engineering team boasts expertise from elite organizations, including Meta, Perplexity, AWS, Affirm, and top-tier AI research institutions like Princeton, Caltech, and Vector Institute.What We're SeekingWe are looking for a Senior Software Engineer with a robust background in experimentation to develop and deliver responsible AI-powered products to millions of users. You will play a critical role in expanding our AI detection and verification platform, while also innovating new products. The ideal candidate will exhibit agility in shipping new features and user interfaces, spearheading experiments and growth loops, and collaborating closely with our exceptional design team.