Our mission is to enable effortless credit based on true risk.
Senior Software Engineer, Foundations
Location
United States
Posted
5 days ago
Salary
$166.9K - $230.9K / year
Seniority
Senior
Job Description
Senior Software Engineer, Foundations
Upstart
• Build and maintain scalable backend systems and data pipelines that support audience segmentation and marketing attribution workflows • Partner with product managers, marketers, and engineers to deliver data solutions that support customer acquisition and conversion goals • Extend existing data infrastructure to support increasing data volumes, evolving business requirements, and new integrations • Contribute to data quality initiatives by implementing monitoring, validation, and guardrail mechanisms across critical datasets • Participate in technical discussions around architecture, access patterns, and platform scalability to support long-term platform growth
Job Requirements
- Bachelor’s degree in Computer Science, Engineering, or Mathematics, or a related field (or its equivalent) + 4 years of experience
- 5+ years of experience building and maintaining backend distributed systems or large-scale data platforms
- Experience working with data processing systems, databases, or data pipelines in production environments
- Experience implementing fault tolerance, monitoring, and observability practices for backend systems
- Experience collaborating cross-functionally with engineering, product, or business stakeholders to deliver technical solutions
Benefits
- Competitive compensation, including base pay, bonus opportunities, and annual equity grants that vest quarterly
- Retirement benefits to help you plan for the future, including a 401(k) or Group Retirement Savings Plan with a company match of $2 for every $1 contributed, up to $15,000 annually (USD in the US, CAD in Canada)
- Employee Stock Purchase Plan (ESPP) with discounted stock purchase options for eligible employees (US only)
- Comprehensive health coverage designed to support you and your family, including medical, dental, vision, and wellness resources for US and supplemental health coverage for Canada.
- Health Savings Account contributions from Upstart for eligible plans (US only)
- Income protection benefits, including life insurance and disability coverage for added financial security
- Paid time off, sick leave, and company holidays, in line with local requirements
- Paid family and parental leave to support caregiving and major life moments (duration varies by country)
- Family-centered benefits to support fertility, parenthood, and caregiving needs
- Employee Assistance Program (EAP) offering mental health support and life-centered resources
- Financial wellness resources, including access to financial planning tools and a financial concierge service (US Only)
- Annual wellness allowance to support your physical and emotional well-being and personal development, based on what matters most to you
- Annual productivity allowance to invest in relevant tools and resources you need to do your best work, no matter where you work from
- Connection and community through team events, all-company updates, and employee resource groups (ERGs)
- Onsite perks, including catered lunches and fully stocked micro-kitchens when working from one of our offices in the Bay Area, Austin, Columbus, and New York City (opening Summer 2026!)
Related Guides
Related Job Pages
More Full-stack Engineer Jobs
• Design, build, and maintain highly responsive web applications with a strong focus on pixel-perfect UI and seamless UX. • Collaborate closely with product and design teams to translate user needs into technical requirements and robust features. • Maximize development efficiency by integrating AI-assisted coding tools into your daily workflow. • Ensure code quality, performance, and scalability across the entire frontend stack.
Senior Full Stack Developer
Bright Horizons Family SolutionsBright Horizons is a leading education and care company that helps employees thrive at work and at home by partnering with employers to offer high-quality child care, elder care, and educational support. Our workplace reflects this commitment—with collaborative environments, meaningful benefits, and a culture that supports both career growth and personal well-being.
Role Description Step into a role as Steve & Kate's Senior Full Stack Developer. At Steve & Kate's, we put radical trust in kids so that they learn to trust themselves. Campers choose minute to minute what they do, with whom, and for how long, because kids who learn to make decisions today build the self-confidence they’ll need to wrangle unknowns tomorrow. If you join our team as a Senior Full Stack Developer, you’ll join a small but mighty team that assists in building both front-end and back-end for web and mobile applications for a rapidly growing business. You collaborate within an agile process and modern architectural approaches such as cloud technologies, containerization, DevOps practices, UI component frameworks, APIs, and web services. This position is a remote role in the United States. The Senior Full Stack Developer assists in building both front-end and back-end for Web and Mobile applications. Senior Full Stack Developer delivers solutions using the latest architectural approaches such as Containerization, Cloud Technologies, Hybrid mobile frameworks and tools. Responsibilities - Provide hands-on development in the application development, unit test, and rollout of strategic web and mobile initiatives. - Develop both front-end and back-end for web/mobile applications, working with a hybrid internal/vendor team, to support the needs of Steve & Kate’s Camp users and stakeholders. - Work with Business Owners and Business Analysis teams, to create business requirements. - Document technical requirements and technical specifications for Web/Mobile applications (and related integrated solutions) and provide technical solutions to support those needs. - Provide feedback (and approval) on technical designs and methods to support business requirements. - Deploy, monitor, and fix code in production environments, ensuring high availability and performance of applications. - Implement and maintain CI/CD pipelines to automate deployment processes. - Monitor application performance and troubleshoot issues to ensure optimal operation. - Collaborate closely with a small, highly productive team that has significant influence and respect within the organization. Qualifications - Bachelor's Degree in Computer Science or related field. 3 years minimum of additional experience would be considered in lieu of the applicable degree. - 5 years Backend API and front-end UI development experience. - Back-end development experience in Ruby on Rails. - Front-end development experience in React, Vue.js, Angular, or similar Javascript framework. Preferred Qualifications - 5+ years of experience with back-end development in Ruby on Rails. - Solid understanding of RDBMS & NoSQL databases. - Expert in back-end development using Ruby on Rails, GraphQL. - Expert in front-end development using React, HTML5, JavaScript, CSS-in-JS component frameworks (e.g. MUI), unit/integration test frameworks. - Knowledge of coding tools like ESLint, Prettier, VSCode, AI coding assistants (Copilot/Claude), and automated testing. - Experience using PAAS and SAAS resources in Heroku, AWS, or GCP. - Knowledge of GIT based source control systems. - Knowledge of node.js, React Native on iOS, and Docker are a plus. - Strong experience with building and maintaining a reusable component library using design patterns such as higher-order components. - Experience with maintaining and improving an existing codebase, focusing on improving performance, scalability, and user experience. - Excellent problem-solving skills and critical thinker. - Excellent verbal and written communication skills to interact with staff and business partners. - Contribute to a culture of innovation and continuous improvement, where your ideas and expertise are valued. Compensation The annual starting salary for this position is between $108,000- $151,000. The pay range listed here is what Bright Horizons in good faith anticipates offering for this job opening. Actual compensation offers within this range will depend on a variety of factors including experience, education and training, certifications, geography, and other relevant business or organizational factors. Benefits - Medical, dental, and vision insurance. - Paid vacation, sick, holiday, and parental bonding leave. - 401(k) retirement plan. - Long-term and short-term disability insurance. - Life insurance. - Money-saving discounts and financial planning tools. - Tuition assistance and education coaching. - Caregiving support and resources for the children and adults in your family. Application Deadline The deadline to apply is 5/20/2026.
Senior Full-Stack Developer
Kelmar AssociatesKelmar Associates is a group of certified public accountants, attorneys, and consultants who provide project management, auditing, and consulting services for a variety of business
Role Description Kelmar's Full-Stack Developers build and enhance web applications in Angular and Spring Boot, drive technical quality through code reviews and testing practices, and mentor junior developers as they grow. This is a senior individual contributor role where you’ll lead projects from requirements through delivery, shape technical direction, and directly influence a product used by millions of people. If you're energized by building polished, performant web applications and offering technical leadership to colleagues and peers, we want to hear from you. This is a remote position. Responsibilities and Duties: - Develop and enhance web applications using Angular and Spring Boot - Implement features that improve user experience, accessibility, and responsiveness across devices / browsers - Create sustainable, well-documented code and advise on technical debt reduction - Build reusable code and libraries for use across applications - Optimize site performance, localization, authentication/authorization, and SEO - Write and maintain unit and integration tests; participate in the design of CI/CD workflows - Analyze code and communicate detailed, actionable reviews to development teams - Apply cloud-native patterns to ongoing platform innovation - Develop applications that run in serverless (AWS Lambda) or managed Kubernetes environments (AWS EKS, Fargate) - Participate in occasional client-facing meetings - Lead projects, feature requests from requirements through delivery - Mentor junior developers through code reviews, pair programming, and technical guidance - Support deployment and maintenance activities, off-hours, as needed - Occasional travel for internal meetings (<10%) Qualifications - 5+ years of development experience working within a modern full-stack web application environment - Bachelor's degree in computer science or information technology, or commensurate experience - Strong experience with Angular - Experience with Spring or Spring Boot - Experience with relational databases (MySQL preferred), including schema design, query optimization, and data modeling - Familiarity with search technologies such as OpenSearch/Elasticsearch - Proficiency with Git-based workflows - Familiarity with automated testing practices and CI/CD pipelines - Ability to review and interpret client requests with product owners and analysts - Comfortable working independently with limited supervision - Strong organizational skills with the ability to manage multiple priorities - Familiarity with other front-end frameworks like React, Vue, or similar - AWS certifications (Developer Associate, Solutions Architect, or equivalent) - Candidates must be legally authorized to work in the U.S. without sponsorship now and in the future Benefits - Compensation for this role varies depending on several factors including work location, level of experience, and skill set. As required by applicable law, the hiring range for this position is $115,000 – $125,000. - Medical, Dental and Vision Insurance - Flexible Spending Plans - Health Savings Account - Health Reimbursement Arrangement - Basic Life, AD&D, and Voluntary Term Life Insurance - Disability Insurance - 401(k) Plan with Company Match - Paid Parental Leave - Paid Time Off - Tuition Assistance - Eligible for Discretionary Annual Bonus Company Description Kelmar Associates is an equal opportunity employer.
• Investigate and address performance bottlenecks, focusing on areas like memory allocation, PGO/LTO/BOLT, and hot function optimizations. • Maintain and expand support for multiple operating systems, including Windows and Android. • Build and maintain custom toolchains on macOS and Windows, ensuring seamless integration with tools like Xcode and VSCode. • Drive innovations in Swift and C/C++, Java/Kotlin interoperability. • Nearly all of your work lands upstream in LLVM, Swift, and related projects.


