Backend Engineer (Colombia or Brazil)

Software Engineer, AI/ML Infrastructure

Thumbtack

THUMBTACK HELPS MILLIONS OF PEOPLE CONFIDENTLY CARE FOR THEIR HOMES. Thumbtack is the one app you need to take care of and improve your home — from personalized guidance to AI tools and a best-in-class hiring experience. Every day in every county of the U.S., people turn to Thumbtack to complete urgent repairs, seasonal maintenance and bigger improvements. We help homeowners know which projects to do, when to do them and who to hire from our growing community of 300,000 local service businesses. If making an impact inspires you, join us. Imagine what we’ll build together. ABOUT THE MACHINE LEARNING INFRASTRUCTURE TEAM At Thumbtack, our challenges span a wide range of areas, including search, recommendations, matchmaking, pricing, safety, content generation, fraud detection, and more. The ML Infrastructure team is responsible for centralizing, standardizing and evolving AI/ML infrastructure that enables these experiences. We empower product engineering teams by providing scalable, high-performance systems that drive AI innovation at scale. To read more about some of the engineering challenges at Thumbtack, visit our engineering blog. CHALLENGE As a Software Engineer on the ML Infrastructure team, you will work closely with product and platform engineering teams to build and evolve core AI platform capabilities. You will help design and improve systems that allow teams to develop, run, and scale GenAI-powered applications in production. Your work will directly support AI-driven experiences used by millions of customers and pros across the Thumbtack ecosystem. WHAT YOU'LL DO  * Build and evolve core AI platform capabilities that enable teams to develop, run, and scale GenAI-powered applications across Thumbtack. * Contribute to the design, development, and deployment of scalable tools and infrastructure to support the efforts of our applied scientists, including traditional ML model training and serving systems, feature and data workflows, CI/CD, orchestration, deployment, and evaluation tooling. * Work hands on across the stack, from backend services and execution infrastructure to integrations with AI models and tooling. * Partner with senior engineers to evaluate next-generation AI infrastructure frameworks and tools that help product teams harness advances in AI. * Drive projects to completion with a strong focus on business impact and measurable outcomes. * Solve complex technical problems and stay up to date with advances in this rapidly evolving space. IN ORDER TO BE SUCCESSFUL, YOU MUST BRING * 1 to 3 years of professional software engineering experience. * Strong fundamentals in data structures, algorithms, and software design. * Proficiency in at least one major programming language, and the ability to work across multiple languages. Our primary stack includes Go and Python. * Experience working with relational or NoSQL databases such as Postgres or DynamoDB. * Demonstrated ability to use AI coding tools in day-to-day workflows and validate, critique, and refine AI-generated output * Comfort operating in a fast-paced environment with a certain level of ambiguity, especially when learning and picking up new technologies when projects require it. * You operate with a bias to action, quickly learning what is needed and taking decisive steps to move work forward in ambiguous, fast-paced environments. EXPECTED SALARY RANGE * For candidates living in Ontario and British Columbia, the expected salary range for the role is currently $123,300 - $159,500.    Actual offered salaries will vary and will be based on various factors, such as calibrated job level, qualifications, skills, competencies, and proficiency for the role. Note: Thumbtack uses AI tools to support our resume screening process. However, our Recruiting team’s expertise and judgment guide hiring decisions. Actual offered salaries will vary and will be based on various factors, such as calibrated job level, qualifications, skills, competencies, and proficiency for the role. Thumbtack embraces diversity. We are proud to be an equal opportunity workplace and do not discriminate on the basis of sex, race, color, age, pregnancy, sexual orientation, gender identity or expression, religion, national origin, ancestry, citizenship, marital status, military or veteran status, genetic information, disability status, or any other characteristic protected by federal, provincial, state, or local law. We also will consider for employment qualified applicants with arrest and conviction records, consistent with applicable law. Thumbtack is committed to working with and providing reasonable accommodation to individuals with disabilities. If you would like to request a reasonable accommodation for a medical condition or disability during any part of the application process, please contact: recruitingops@thumbtack.com. For information about how Thumbtack collects, uses, and shares personal information about job applicants, please see our Job Applicant Privacy Policy. We put as much craftsmanship into candidate safety as we do into the hiring experience itself. While scammers may try to impersonate our team, we’ll never ask you for money, banking info, or SSNs during hiring. Check out our blueprint on how to spot the fakes.

Senior Software Engineer, Core Experience

Instacart

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. OVERVIEW This role challenges traditional approaches to digital shopping by improving backend systems that power a seamless user journey. You will lead efforts to enhance content discoverability and purchase processes, helping to perfect the interaction between user desires and our vast product offerings. The Senior Software Engineer will focus on enhancing the user experience by developing robust backend architectures that support advanced recommendation and personalization systems. In close collaboration with ML engineers, product teams, and data scientists, you will lead the innovation of our backend services, enabling sophisticated, data-driven features that adapt to our customers' shopping behaviors. The Core Experience teams are dedicated to creating engaging and straightforward shopping experiences. You will be part of a team that is at the heart of product innovation, focusing on everything from the user interfaces to the underlying systems that support our web and mobile platforms. Our team’s work is guided by a data-driven methodology that ensures decisions are aligned with consumer needs, helping us move swiftly and efficiently in our development processes. ABOUT THE JOB * Design, build, and maintain high-quality backend applications. * Lead the development of our backend system's roadmap, prioritizing scalability and reliability. * Innovate and think creatively to develop new features that enhance our customer's shopping experiences. * Own and lead major components of our product, ensuring they meet both internal standards and external expectations. * Collaborate across teams to foster a unified approach to product development, facilitating consensus and driving effective outcomes. * Responsible for the strategic planning and execution of projects you oversee, from inception to deployment and maintenance. ABOUT YOU MINIMUM QUALIFICATIONS * 5+ years of backend development experience, with a strong record of project delivery. * Proficiency in backend languages, such as Ruby or Go. * A solid foundation in unit testing and problem-solving. * Exceptional communication skills and the ability to lead and collaborate with diverse teams. * Holds a Bachelor's or Master’s degree in Computer Science, Software Engineering, or equivalent experience. PREFERRED QUALIFICATIONS * Effectively lead a cross-functional team, demonstrating strong teamwork skills, and capable of clearly communicating ideas and fostering alignment across different departments. * Experience in building scalable solutions and architecture. * Familiarity with ML model development and iteration. * Thorough knowledge of developing applications using GraphQL. * Skilled in the use of monitoring and observability tools like Datadog. * Extensive experience with database management, particularly PostgreSQL and AWS OpenSearch. #LI-Remote Instacart provides highly market-competitive compensation and benefits in each location where our employees work. This role is remote and the base pay range for a successful candidate is dependent on their permanent work location. Please review our Flex First remote work policy here. Currently, we are only hiring in the following provinces: Ontario, Alberta, British Columbia, and Nova Scotia. Offers may vary based on many factors, such as candidate experience and skills required for the role. Additionally, this role is eligible for a new hire equity grant as well as annual refresh grants. Please read more about our benefits offerings here. For Canadian based candidates, the base pay ranges for a successful candidate are listed below. CAN $168,000—$177,500 USD

Senior Software Engineer, Customer Growth

Thumbtack

THUMBTACK HELPS MILLIONS OF PEOPLE CONFIDENTLY CARE FOR THEIR HOMES. Thumbtack is the one app you need to take care of and improve your home — from personalized guidance to AI tools and a best-in-class hiring experience. Every day in every county of the U.S., people turn to Thumbtack to complete urgent repairs, seasonal maintenance and bigger improvements. We help homeowners know which projects to do, when to do them and who to hire from our growing community of 300,000 local service businesses. If making an impact inspires you, join us. Imagine what we’ll build together. ABOUT THE NEIGHBORHOODS TEAM The Neighborhoods team is on a mission to transform how customers interact with Thumbtack by leveraging hyper-local social proof and community-driven insights. We are building the foundational experience that connects homeowners through their shared service needs, turning property care into a collective, transparent journey. Our goal is to empower users to be proactive in caring for their homes by surfacing relevant, real-time service activity in their immediate area, ultimately fostering a more engaging, trust-based marketplace.   THE CHALLENGE Homeowners often face their biggest projects in isolation, with guidance separated from action. Our vision is to bridge this gap, transforming home care from a solitary task into a collective, transparent journey. The Neighborhoods team is redefining how homeowners make decisions by surfacing hyper-local social proof—connecting them to the pros their neighbors already trust and recommend. Your challenge is to build the platform that enables this paradigm shift. You will be responsible for creating the foundation that makes "knowing who my neighbors use" a reality, balancing rapid innovation to validate these new behavioral signals with the technical discipline to build a scalable, trusted experience. You will be at the forefront of pioneering a new era of home care, where every project feels like a neighborhood-powered collaboration.   WHAT YOU’LL DO * Drive engineering projects to completion, with a tenacious focus on the business impact of those projects. Skilled at prioritizing tasks to deliver on goals with a sense of urgency. * Execute new ideas quickly and effectively on the backend while also being a resource to other teams and engineers. * Willing, when necessary, to solve tough technical problems at any level of the stack, and be persistent in getting to the solution. * Work collaboratively with cross-functional teams such as Product and Design to plan and execute on engineering projects. * Work on large projects and lead small teams of engineers.   IN ORDER TO BE SUCCESSFUL, YOU MUST BRING * Minimum of 5+ years of experience in software engineering. * Fluent in at least one major programming language and would be able to switch between multiple languages. We mainly use Go, Python, Php, with Swift, Kotlin and Java for our mobile apps. * Solid experience building software on top of relational databases such as Postgres or MySQL. * Write high quality, maintainable, testable code. * Curious, data-driven, and a critical problem solver. Break down complex problems rigorously and understand the tradeoffs necessary to deliver great, impactful products. * Experience leveraging AI coding-agents to deliver production software. * Experience supporting and maintaining production software platforms.   EXPECTED SALARY RANGES * For candidates living in Ontario and British Columbia, the expected salary range for the role is currently $180,200.00 - $233,200.00. Actual offered salaries will vary and will be based on various factors, such as calibrated job level, qualifications, skills, competencies, and proficiency for the role. Thumbtack embraces diversity. We are proud to be an equal opportunity workplace and do not discriminate on the basis of sex, race, color, age, pregnancy, sexual orientation, gender identity or expression, religion, national origin, ancestry, citizenship, marital status, military or veteran status, genetic information, disability status, or any other characteristic protected by federal, provincial, state, or local law. We also will consider for employment qualified applicants with arrest and conviction records, consistent with applicable law. Thumbtack is committed to working with and providing reasonable accommodation to individuals with disabilities. If you would like to request a reasonable accommodation for a medical condition or disability during any part of the application process, please contact: recruitingops@thumbtack.com. For information about how Thumbtack collects, uses, and shares personal information about job applicants, please see our Job Applicant Privacy Policy. We put as much craftsmanship into candidate safety as we do into the hiring experience itself. While scammers may try to impersonate our team, we’ll never ask you for money, banking info, or SSNs during hiring. Check out our blueprint on how to spot the fakes.