Source Job

• Design and improve backend services that support complex business workflows.
• Build and evolve distributed systems using modern cloud-native patterns.
• Architect and implement event-driven and asynchronous workflows.

EX Squared LATAM partners with leading U.S.-based technology companies to build scalable, high-performance systems. They foster a collaborative and inclusive environment focused on technical excellence across LATAM, allowing opportunities for architectural impact.

• Design, develop and maintain scalable solutions in Python leveraging AWS Serverless components
• Balance fast iteration with robust testing and documentation
• Collaborate with other engineers, designers and product leaders in a fully remote, high-performing team

Push Security is on a mission to defend organizations where work and attacks happen in the browser. Built by world-class red and blue team experts, Push gives defenders the real-time visibility and control needed to stop modern threats and is a fast-scaling startup.

• Assist in leading projects from design to delivery.
• Partner with product managers and designers to define requirements during discovery and planning.
• Collaborate with developers to deliver those requirements on time as new features or improvements to existing functionality.

Judi Health is an enterprise health technology company providing a comprehensive suite of solutions for employers and health plans. We are a late-stage startup with stability and startup energy with a focus on delivery, but healthy processes with a strong financial outlook that provides a sense of security.

• Design, develop, and implement scalable and robust backend systems and APIs using Python.
• Optimize database schemas, queries, and overall performance while maintaining security and data integrity.
• Lead debugging, profiling, and monitoring of backend services, proactively identifying and addressing issues before they impact users.

Octave is a modern behavioral health practice creating a new standard for care delivery that’s both high-quality and accessible. With in-person and virtual clinics in multiple states, the company offers evidence-based individual, couples, and family therapy. By raising the bar on how care is delivered and how providers are supported, we are building a sustainable system that values equity, affordability, and effectiveness.

• Designing and implementing core backend services for high performance, complex distributed systems
• Driving and using modern development practices such as BDD and TDD would be highly beneficial
• Creating clear, modern, well tested code

Primer is the world's first unified payment infrastructure, empowering businesses worldwide to unleash their payment potential. They strive to make something complex, incredibly simple and intuitive and are backed by top investors, including Accel, Balderton, Iconiq, and Tencent.

• With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks.
• You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation.
• You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. They are experiencing explosive growth with millions of customers across thousands of merchants in-store and online, and contributions from new employees will be a key enabler of that growth.

• You will work on tasks that contribute to the team's projects and goals.
• You will strike the right balance of speed and quality in your work.
• You will contribute to a sense of community on your team by engaging in growth and development activities.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. They are a remote-first company with a focus on their employees.

• Be responsible for owning and delivering quarterly goals for your team, leading engineers through ambiguity to solve open-ended problems.
• Design and implement backend services and APIs using Python or Kotlin, operating within Affirm’s microservice and event-driven architecture.
• Proactively identify opportunities to improve system reliability, team efficiency, or architecture and lead efforts to address them.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. They are a remote-first company with an emphasis on valuing their employees.

• Lead the technical vision and execution for complex, cross-product initiatives.
• Be a principal contributor on scalable backend systems, distributed architecture, and real-time data platforms.
• Influence technical strategy, champion engineering excellence, and drive high-impact delivery across multiple teams.

Impiricus is an AI-powered HCP Engagement Engine that transforms how life sciences companies support physicians. Named the #1 fastest growing company in North America in 2025, they ethically connect HCPs to pharma resources to reduce go-to-market costs.

• Drive planning and prioritization of projects based on product, technical, and business goals by leveraging relevant resources and data.
• Work cross functionally with colleagues in Experience, Accounting, Product, and Analytics teams to set and execute our money movement strategy for the Debit card
• Build APIs and data models to work within micro-service and event-driven architectures

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. Affirm is experiencing explosive growth with millions of customers across thousands of merchants in-store and online, and its culture is built on honesty and trust.

• Spearhead development of a user-centric initiative, collaborating with product, engineering, and data teams to revolutionize our products.
• Collaborate on designing reliable, maintainable, and scalable systems to support millions of users worldwide.
• Leverage AWS services (e.g. Lambda, API Gateway, S3) to build modern, serverless solutions.

Welltech is a global company with Ukrainian roots with the mission to move everybody to start and stay well for life. With five hubs across Cyprus, Ukraine, Poland, Spain and the UK and a diverse, remote-friendly team of 700+ professionals, they continue to scale rapidly.

• Build and operate backend services and automation for the Snowflake data platform.
• Support data ingestion pipelines (RDS/Oracle → Snowflake) and reverse ETL (Snowflake → RDS).
• Develop and maintain Airflow (AWS MWAA) workflows for ingestion, data quality, and ops automation.

Upwork is the world’s work marketplace, serving everyone from one-person startups to over 30% of the Fortune 100. They provide a powerful, trust-driven platform that enables companies and talent to work together in new ways that unlock their potential. Last year, more than $3.8 billion of work was done through Upwork.

• Ship code that powers thousands of drivers every single day across multiple countries
• Build lightning-fast, serverless architectures on AWS that scale effortlessly
• Own the entire backend infrastructure – this isn't just writing code, it's shaping the foundation of our platform

Everfield buys, builds, and grows European vertical market and specialist software companies, providing them with the tools they need to move to the next level. Founded in 2022, Everfield has an ecosystem presence in 9 countries, and growing.

• Collaborate with engineers in supporting new features and services.
• Build tools to monitor site stability and performance.
• Troubleshoot site issues using industry-leading tools like Splunk, Prometheus and OpenTelemetry.

Yelp's engineering culture is cooperative and values individual authenticity. They encourage creative solutions to problems and help users, grow as engineers, and have fun in a collaborative environment.

• You will break down larger projects into individual tasks and collaborate with others to ensure timely delivery.
• You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics.
• You will support the operations and availability of your team’s artifacts by creating and monitoring metrics and supporting on-call efforts.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. They are a remote-first company as most roles are remote and offer flexibility related to time off, family forming, and health spending.

• Break down larger projects into individual tasks and deliver them in multiple phases.
• Collaborate with product management, design & analytics by participating in ideation.
• Support the operations and availability of your team’s artifacts by creating and monitoring metrics.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. Affirm is a remote-first company; the majority of our roles are remote, with employees having the flexibility to work remotely.

• You will be responsible for owning and delivering quarterly goals for your team.
• You will support your peers and stakeholders in the product development lifecycle.
• You will proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. They are a remote-first company with competitive benefits.

• 5+ years of backend experience with technologies such as Python, GCP, MySQL, and Redis.
• Demonstrated ability to design and implement features within strict external platform or API requirements.
• Communicate clearly across remote channels and contribute thoughtfully to discussions and reviews.

Recharge is the subscription platform for innovative brands. They help merchants deliver seamless customer experiences. Recharge is known for its relentless product innovation and focus on ease of use, helps merchants drive customer retention and revenue growth and currently employs over 20,000 brands globally.

• Design, build, and maintain scalable backend services using Python and modern frameworks.
• Develop data integration services and connectors to support multiple products and clients.
• Collaborate closely with product managers, engineers, and cross-functional teams in an Agile environment.

InvestorFlow delivers industry-specialized CRM, built on Salesforce, and digital portals to help alternative asset firms find opportunities, create and manage relationships. They serve over 175 clients and are headquartered in San Francisco, California.

• Build and enhance backend services that power NodeZero.
• Implement and evolve backend APIs in GraphQL and Python.
• Collaborate closely with other teams.

Horizon3.ai is a cybersecurity company dedicated to enabling organizations to proactively find, fix and verify exploitable attack vectors. They are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners.