Senior Backend Engineer

Senior Software Engineer

Breeze

Are you passionate about solving complex challenges in the fintech space? We’re looking for talented individuals to join our dynamic startup, backed by Sequoia Capital. We’re building the universal payment layer to unify all currencies—fiat and crypto—so businesses and consumers can transact seamlessly. If you're passionate about creating innovative solutions in a dynamic, fast-paced environment, we want to talk to you. We are hiring a Senior Backend Software Engineer!  This will be our first Senior hire in our NYC office.  As a Software Engineer at Breeze, you’ll take ownership of building and scaling the systems that power our payments and fintech platform. You’ll work across the stack using modern technologies to deliver secure, high-performance solutions while influencing technical direction and product strategy. In this senior role, you’ll collaborate closely with product, design, and fellow engineers, mentor teammates, and help shape the engineering culture as we grow. This is a hands-on opportunity to have a major impact at a fast-moving, Sequoia-backed startup. What You’ll Do: * Work on building our payment system, ensuring scalability, security, and performance. * Engage in backend development with Node.js and TypeScript on the backend, using serverless infrastructure. * Collaborate closely with cross-functional teams to deliver high-impact solutions. * Take ownership of your work as a product engineer, influencing both technical direction and product design. * Communicate effectively with stakeholders to ensure alignment on goals and outcomes. * Adapt to new challenges in a dynamic startup environment where we move fast and innovate constantly. What We're Looking For: * At least 5 years of professional experience in software engineering, ideally in the fintech or payments industry and in fast-paced or startup environments. * Strong problem-solving skills and attention to detail, with a track record of owning and delivering complex features or systems. * Solid experience with Node.js, and TypeScript (or similar modern frameworks and languages). * Excellent communication skills – critical for working closely with cross-functional teams and contributing to product decisions. * A deep understanding of building scalable, reliable systems and familiarity with cloud-based or serverless infrastructure. * Experience in cryptocurrency or blockchain is a plus. * A product-focused mindset and a drive to build high-quality, user-centric solutions. * A passion for working in a dynamic startup environment and solving complex challenges. * We have a high hiring bar for engineers and are looking for top talent. Our Culture: * Fast-paced and dynamic – We’re a growing startup that moves quickly. * Tech-driven – We leverage technology to address our users’ biggest challenges. * Ownership and communication – We value people who take full ownership and communicate well across teams. * Continuous learning – You’ll have the opportunity to work alongside industry experts and enhance your expertise in risk management. Why Join Us: * Competitive salary + equity plan * 21 days PTO * Benefits: annual medical allowance, productivity budget, gym membership & wellness subsidy * Annual team retreat trip * Be part of a team backed by Sequoia Capital with a healthy runway. Requirements: * 5+ years of relevant software engineering experience, ideally in big tech, fintech or fast-paced startup environments. * Proficiency in modern backend development.  * Exposure to serverless infrastructure is a plus. * Bachelor's degree or equivalent practical experience. * Visa Sponsorship is not available at the moment.  COMPENSATION * Salary: $150,000 – $165,000 base (flexible and can exceed band for exceptional, top-tier candidates) * Competitive performance-based bonus * Meaningful equity package with significant upside * Total compensation designed to be competitive. Apply now and help us build the future of payments at a global scale!

Staff Software Engineer, Backend (Communications Platform)

Squarespace

Squarespace is looking for a Backend Staff Software Engineer to lead the technical direction of our Communications Platform team. The Communications Platform is a critical engine powering customer engagement across Squarespace — providing internal teams with a scalable, reliable, and secure infrastructure for delivering communications via email, push notifications and in-product messaging. The team owns multiple interconnected production platforms that collectively send over 1.75+ million notifications per day, strategic initiatives including platform modernization, In-Product Placements, and multi-channel communication capabilities. In this role, you’ll serve as the senior technical voice for the team — driving architecture, shaping roadmap execution, and elevating the engineering quality of a small but high-impact team. This is a hands-on role with real technical depth, paired with broad cross-functional influence. This is a hybrid role based in our NYC office (3 days per week), reporting to the Engineering Manager of Communications Platform. YOU’LL GET TO… * Drive the architecture, design, and implementation of the Communications Platform’s platforms — including Email Delivery, In-Product Notifications and Push Notifications. * Define and own the technical strategy for platform modernization, reliability hardening, and engineering standards across backend services. * Provide hands-on technical leadership and mentorship to a team of backend and frontend engineers, helping them grow in system design, decision-making, and ownership. * Write high-quality Java code and stay close to execution — leading design reviews, code reviews, and architectural decisions that raise the bar across the codebase. * Proactively identify and address systemic risks in performance, reliability, security, and operability before they become incidents. * Serve as a key technical partner on cross-team and company-wide architecture initiatives. * Balance short-term delivery with long-term platform health, communicating tradeoffs clearly to stakeholders and leadership. WHO WE’RE LOOKING FOR * 10+ years of backend engineering experience, with significant time building and operating large-scale, customer-facing systems. * Deep expertise in Java and backend service development, including APIs, async processing, messaging systems (ex: Kafka), and data stores (ex: MongoDB, CockroachDB). * Strong experience with distributed systems in production — including reliability, scaling, failure modes, and observability. * A proven track record of technical leadership at the Staff or Senior-plus level, influencing architecture across multiple teams or services. * Experience evolving existing systems — modernizing legacy platforms, simplifying complexity, and strengthening reliability without unnecessary rewrites. * Experience operating within platform engineering contexts, where your customers are internal or external product teams and the quality of your APIs and abstractions directly shapes their velocity. * A strong understanding of multi-channel communication infrastructure (email delivery, push, in-product notifications) is a meaningful plus. * The ability to communicate complex technical concepts clearly to both technical and non-technical partners. * A mindset oriented toward mentorship, collaboration, and inclusive technical leadership. TECHNOLOGIES YOU'LL WORK WITH * Java, Spring, Kafka, MongoDB, CockroachDB, Kubernetes, GCP. * The team actively uses Claude Code, Cursor and GitHub Copilot to accelerate development and code review. BENEFITS & PERKS * A choice between medical plans with an option for 100% covered premiums  * Fertility and adoption benefits * Access to supplemental insurance plans for additional coverage * Headspace mindfulness app subscription * Global Employee Assistance Program * Retirement benefits with employer match * Flexible paid time off * 12 weeks paid parental leave and family care leave * Pretax commuter benefit * Education reimbursement * Employee donation match to community organizations * 7 Global Employee Resource Groups (ERGs) * Dog-friendly workplace * Free lunch and snacks * Private rooftop * Hack week twice per year CASH COMPENSATION RANGE: $185,500 - $299,000 USD The base salary for this position will vary based on job-related criteria including relevant skills, experience, and location, among other factors. In addition to the cash compensation above (which includes base salary and, where applicable for eligible roles, may include overtime pay), Squarespace employees are eligible to be granted an option to purchase our common stock. Sales positions generally offer a competitive On Target Earnings (OTE) incentive structure in addition to base salary. ABOUT SQUARESPACE Squarespace is a design-driven platform helping entrepreneurs build brands and businesses online. We empower millions of customers in more than 200 countries and territories with all the tools they need to create an online presence, build an audience, monetize, and scale their business. Our suite of products range from websites, domains, ecommerce, and marketing tools, as well as tools for scheduling with Acuity and creating and managing social media presence with Bio Sites and Unfold. Our team of more than 1,700 is headquartered in New York City, with offices in Dublin, Ireland, and Aveiro, Portugal. For more information about our company, visit https://www.squarespace.com/about/careers. OUR COMMITMENT  Today, more than a million people around the globe use Squarespace to share different perspectives and experiences with the world. Not only do we embrace and celebrate the diversity of our customers, but we also work toward the same in our employees. At Squarespace, we are committed to equal employment opportunity regardless of race, color, ethnicity, ancestry, religion, national origin, gender, sex, gender identity or expression, sexual orientation, age, citizenship, marital or parental status, disability, veteran status, or other class protected by applicable law. We are proud to be an equal opportunity workplace. #LI-Hybrid Thank you in advance for providing the following details about your work history from your resume! This helps us ensure that your candidate information is accurate and consistent during the hiring process.   Squarespace will never solicit your personal banking information or ask you to transfer money in connection with a job offer or interview. We also will not reach out to you via phone or SMS without your permission or knowledge.   If you plan to use AI in any capacity during your candidate journey, please review our Candidate AI Policy.

Senior Software Engineer, Backend

Plaid

We believe that the way people interact with their finances will drastically improve in the next few years. We’re dedicated to empowering this transformation by building the tools and experiences that thousands of developers use to create their own products. Plaid powers the tools millions of people rely on to live a healthier financial life. We work with thousands of companies like Venmo, SoFi, several of the Fortune 500, and many of the largest banks to make it easy for people to connect their financial accounts to the apps and services they want to use. Plaid’s network covers 12,000 financial institutions across the US, Canada, UK and Europe. Founded in 2013, the company is headquartered in San Francisco with offices in New York, Washington D.C., London and Amsterdam. Plaid’s mission is to unlock financial freedom for everyone by making money movement and access to financial data simple and secure. As a Software Engineer, you will design and build the systems that power how millions of people connect to their finances. You will work across the stack, from reliable backend services and APIs to intuitive applications that bring those systems to life. You will collaborate with engineers, product managers, and designers to ship products that make financial services more accessible and transparent. At Plaid, engineers take ownership early, grow quickly, and see their work reach millions of users. Responsibilities: * Design & Development: Build and maintain backend services with a focus on performance, reliability and scalability. * Collaboration: Work closely with product managers and other stakeholders to define and implement new features that meet product and customer needs. * Code Quality: Write clean, maintainable and efficient code. * Testing & Debugging: Develop automated tests to ensure the quality and reliability of the codebase. Troubleshoot and resolve issues. * Engage in hands-on coding and architectural design, setting and maintaining high technical standards for a high performing team. * Grow the team via mentorship and leadership, reviewing technical documents and code changes. Qualifications: * 5+ years of experience with extensive experience in software engineering with a proven track record of shipping successful projects. * Experience with MySQL or other relational databases. * Experience working with microservices. * Excellent coding, testing, and system design skills. * Prior experience with cross functional collaboration, communication and project management skills. * Demonstrated leadership skills and the ability to mentor and guide junior engineers. * Ability to work with operations, product, design, and data science. Our mission at Plaid is to unlock financial freedom for everyone. To support that mission, we seek to build a diverse team of driven individuals who care deeply about making the financial ecosystem more equitable. We recognize that strong qualifications can come from both prior work experiences and lived experiences. We encourage you to apply to a role even if your experience doesn't fully match the job description. We are always looking for team members that will bring something unique to Plaid! Plaid is proud to be an equal opportunity employer and values diversity at our company. We do not discriminate based on race, color, national origin, ethnicity, religion or religious belief, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, military or veteran status, disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state, and local laws. Plaid is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance with your application or interviews due to a disability, please let us know at accommodations@plaid.com. Please review our Candidate Privacy Notice here. Additional compensation in the form(s) of equity and/or commission are dependent on the position offered. Plaid provides a comprehensive benefit plan, including medical, dental, vision, and 401(k). Pay is based on factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience and skillset, and location. Pay and benefits are subject to change at any time, consistent with the terms of any applicable compensation or benefit plans.