Backend Engineer

• Design, implement, and operate our ads delivery infrastructure and services.
• Own critical serving-time systems and business logic that enable reliable, scalable, and efficient ad delivery.
• Partner closely with Product, Data Science, ML, and Infrastructure teams to translate product vision into scalable technical solutions, driving end-to-end execution from concept to launch and ongoing optimization.
• Design, test, debug, and maintain high-quality production systems, leveraging observability, experimentation, and automation to ensure robust and resilient services.
• Champion best practices in distributed systems, availability, scalability, operational excellence, security, and infrastructure efficiency while helping evolve the long-term architecture of the ads delivery platform.
• Utilize AI tools and high velocity engineering workflows to design and ship scalable services while upholding rigorous standards for code correctness, security, and production ready quality code.

Software Engineer, Backend, Level 5 – Ads Delivery

• Design, develop, and maintain robust, scalable, and high-performance object oriented code in our backend services.
• Develop public REST APIs using Java and internal gRPC APIs for inter-service and inter-system communication.
• Craft systems designs, lead design decisions, and drive alignment with other senior engineers.
• Write automated unit tests, integration tests, end-to-end tests, concurrency tests, load/performance tests.
• Analyze existing systems to identify bottlenecks, tech debt, and implement scalability, and stability improvements.
• Implement automation for testing, monitoring, healing, and scaling applications, continuous integration and deployment to reduce time to market.
• Collaborate with cross-functional teams, including product managers, designers, and other engineers, to define and implement new features.
• Conduct code reviews (comment, approve, seek revisions, merge), mentor junior and mid-level engineers, and actively promote engineering best practices.
• Dive deep and troubleshoot complex issues, devise fixes, author root cause analysis documents, and ensure lasting performance and reliability.
• Conduct objective and comparative analyses of competing technologies to advise the team of pros and cons of a technology solution.
• Maintain robust documentation (design docs, run books, change management docs, and readiness plans).
• Provide live-site support for production applications by monitoring systems, ensuring rapid incident resolution, and driving continuous improvement.
• Drive cross-team projects as a single-threaded-owner (STO) or tech lead, and actively unblock other engineers to make progress.

Senior Backend Engineer – AI Platform

• With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work.
• You will support your peers and stakeholders in the product development lifecycle by collaborating across engineering, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
• 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.
• You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process.

Software Engineer II, Backend – ML Training, Serving

• We’re looking for a talented engineer to join the Nitro team and help build the core technology powering Arbitrum, the leading Ethereum scaling solution.
• Designing and optimising systems responsible for transaction execution, state management, and network performance
• Scaling throughput and improving the performance and efficiency of Arbitrum's core infrastructure
• Solving distributed systems challenges across a large-scale blockchain network
• Enhancing reliability, observability, and security across critical infrastructure
• Developing new capabilities for the Arbitrum stack

Senior Backend Engineer, Rust

• Contribute to the design and implementation of large-scale backend applications.
• Ensure code quality and support your teammates in maintaining strong engineering standards.
• Build reliable and fault-tolerant systems using message queues (RabbitMQ, Kafka, etc.) and implement best practices for scalability and resilience.
• Improve system scalability, reliability, and architectural clarity through thoughtful design and optimization.

Senior Software Engineer – Java

• Lead internal and external cross-functional team to ensure comprehensive scope coverage of BESS execution to fit offtake, M&A buyer, and any other project needs.
• Partner with key battery suppliers, EPC contractors, power plant controller providers, and inverter suppliers to estimate component cost and performance for battery energy storage systems for inclusion in PV+S projects
• Collaborate with battery suppliers, BESS contractors and BESS integrator partners to build investor confidence in new technology or suppliers and push down the Levelized Cost of Storage
• Own, write and negotiate clear and strong technical contracts for the BESS EPC contractors and BESS suppliers to deliver on our PPA obligations at the lowest cost and the least risk
• Specify controls and SCADA capabilities of the BESS and power plant for integration with onsite PV, interconnection facilities and utility operations
• Collaborate with Avantus PV design SMEs to co-optimize design of storage facility with the solar PV component of the projects
• Help prepare BESS Suppliers and EPC RFPs and technical requirements, work with internal teams to hand off contracted BESS suppliers and EPC contractors to ensure and manage proper engineering, construction, schedule, commissioning, and operation of assigned PV+S projects
• Work with project engineering team to support design, engineering and technical matters in dealing with project external engineering groups such as engineer of records, owners engineering, fire safety consultants and independent engineering
• Review BESS technical deliverables to ensure technical needs and correct designs are met
• Lead the collaboration between BESS suppliers, BESS contractors and their consultants to assist AHJ BESS permitting process

Senior Manager, Storage Engineering

• Support a critical customer engagement focused on application and platform modernization
• Lead modernization efforts and breaking down monolithic architectures into container-based services on GCP
• Work closely with engineering managers and customer stakeholders to ensure project success from initial definition through final delivery
• Drive language and library upgrades (Python 3.11+, PHP 8.4.x, OpenSSL)
• Own design and reviews, and mentor junior developers
• Build and extend metrics paths as the platform moves from a legacy metrics system to Chronosphere, Prometheus, and Grafana
• Collaborate with product engineers on OS and package shifts (RHEL7 to EL8/9, proprietary packaging to RPM) and cloud migrations
• Troubleshoot and debug complex issues across the distributed system, identifying root causes and implementing effective solutions

Staff/Senior Software Engineer – Python, PHP

• Build and evolve cloud-based systems to flawlessly manage and distribute configuration information to a fleet of millions of endpoints, collaborating with other cloud, front-end, and endpoint developers
• Brainstorm, design, and build collaboratively with members across multiple teams
• Build elegant and performant solutions for complex technical problems in Go
• Read and critique code in the multiple programming languages in use in our environment (including Go, Python, Unix shell, Typescript, C++, among others), and provide technical guidance and feedback to team members
• Focus on continual learning, raising the bar for both yourself and your teammates
• Leverage our understanding of engineering best practices, including topics like appropriate testing paradigms, effective peer code reviews, logging, and resilient architecture patterns, to ensure that our code is clean
• Be an energetic ‘self-starter’ with the ability to take ownership and be accountable for deliverables, both individually and when leading a team
• Deliver and accept feedback with grace and courtesy
• Collaborate on determining root causes of production outages and adding quality improvements to prevent outages in the future

Senior Engineer, Backend/Cloud – Policy

• Build backend and infrastructure systems that extend OpenAI’s API platform into cloud-native environments, like AWS.
• Design and ship cloud-contained products that allow customers to use OpenAI capabilities while keeping workloads and data within cloud environments.
• Help stand up cloud-hosted Codex experiences powered by the OpenAI Responses API.
• Build the infrastructure and runtime abstractions for a stateful, cloud-optimized agentic platform.
• Partner closely with external cloud partners as well as internal teams across Codex, Research, and Safety Systems to translate emerging capabilities into production-ready systems.
• Improve the reliability, scalability, observability, and operational maturity of the services underpinning these products.
• Help shape the technical direction of a new and growing team as it scales from an early core group into a larger engineering organization.

Backend Software Engineer, API Multicloud

• Design, develop, and maintain backend services using TypeScript and NestJS.
• Architect and implement scalable APIs, integrations, and event-driven systems.
• Build and optimize high-throughput workflows that process large volumes of transactions and data.
• Design data models, service architectures, and integration patterns for complex distributed systems.
• Develop reliable asynchronous processing systems using queues, workers, and background jobs.
• Collaborate with Product and cross-functional teams to translate business requirements into scalable technical solutions.
• Improve platform reliability, performance, and operational efficiency.
• Implement observability best practices, including logging, monitoring, metrics, tracing, and alerting.
• Contribute to API design, developer experience, documentation, and internal tooling.
• Participate in architectural discussions and influence long-term platform strategy.
• Leverage modern AI-assisted development tools to improve engineering productivity and code quality.
• Take ownership of projects from design through deployment and ongoing optimization.

Backend Software Engineer

• Design, develop, and own end‑to‑end features across data pipelines, APIs, and microservices
• Build and enhance integration services that exchange data with internal platforms and external systems
• Develop and evolve components of a microservices ecosystem supporting equity portfolio construction and direct indexing workflows
• Design relational database schemas, write efficient SQL, and ensure data quality, completeness, and timeliness
• Support building, releasing, and operating services in a cloud‑native environment
• Troubleshoot issues in live production environments
• Continuously improve the platform through modernization of existing components
• Write clear, maintainable code
• Collaborate with engineers, product partners, and business stakeholders

Senior Software Engineer, Data Integrations, Java/Python

• Design, build, and maintain scalable backend services using C#, .NET, and Microsoft Azure technologies.
• Architect and develop secure, reliable, and high-performance APIs that power Franki's products and user experiences.
• Collaborate with Product, Design, and Frontend teams to define technical solutions and deliver new features.
• Lead technical discussions and contribute to architectural decisions that support long-term scalability and maintainability.
• Conduct code reviews and help establish engineering standards, best practices, and development processes.
• Optimize application performance, reliability, and scalability across our platform.
• Troubleshoot complex technical issues and implement effective long-term solutions.
• Champion automated testing, CI/CD practices, and modern software development methodologies.
• Evaluate emerging technologies and recommend improvements that enhance engineering efficiency and product capabilities.
• Mentor fellow engineers and contribute to a collaborative, high-performing engineering culture.

Senior Backend Engineer

• Design and build Go microservices that power the AWC console and platform layer.
• Build operators, controllers, and jobs that run on Kubernetes.
• Integrate with internal platform components and external cloud provider APIs.
• Design schemas and write migrations, ensuring data consistency for services.
• Write unit and integration tests and contribute to system-level test infrastructure.

• Manage and lead a team of talented engineers and senior individual contributors based in North America
• Develop and execute on a technical roadmap and strategy for your team, aligning with the department's vision and the company's business goals
• Lead and mentor a team of software engineers, including senior and principal-level contributors, fostering a culture of technical excellence and innovation
• Partner with Engineering leaders, product managers, and partner teams to understand requirements, develop solid designs and implementations, and facilitate integration and adoption
• Drive and enforce best practices for the software development lifecycle, including coding standards, testing, deployment, system scalability, reliability, and security, tracking key performance indicators for engineering quality and efficiency
• Communicate team progress, successes, challenges, and strategic plans clearly and transparently to engineering leadership and other business stakeholders
• Oversee team resources, staffing, mentoring, and enhancing a best-of-class engineering team
• Work closely with customers in various geographies and partner teams (like PS and support) to ensure successful adoption of Ozone and provide technical guidance for enterprise customers running 100s of petabytes-scale big data analytics and ML/AI pipelines
• Guide the team in contributing to the Apache open-source community

Senior Engineering Manager – Storage Engineering

• Lead engineering initiatives end-to-end
• Collaborate cross-functionally with Engineering, Product, Policy, and Marketing teams
• Demonstrate a high bar for code quality
• Exceptional communication
• Design, advise, and build the next versions of our GraphQL API
• Debug and fix production issues + participate in an on-call rotation.

Senior Product Software Engineer, Python

• Join a dynamic and fast-growing AI infrastructure company that collaborates with Fortune 100 clients.
• Accurately identify, classify, and annotate entities within PDF documents.
• Assess solutions for correctness, clarity, security, performance, and adherence to the prompt.
• Identify issues in application architecture, data modeling, API design, security, caching, and database usage.
• Write strong explanations and model solutions that demonstrate best practices.
• Evaluate, rank, and provide feedback on AI responses to improve correctness, security, readability, and contextual fit.
• Ensure model integrity by testing AI outputs for inaccuracies, unsafe practices, and potential biases.

PHP Developer

• Design, develop, and maintain high-performance server applications in C/C++ and Rust.
• Write message parsers and feed handlers for direct market data feeds from trading venues.
• Optimize existing codebase for high throughput (millions of messages per second, up to 40+ gigabits) and low latency (measured in nanoseconds).
• Implement tools and libraries for petabyte-scale data processing and analysis.
• Collaborate with the systems team to implement best practices for build, deployment, CI/CD.
• Implement monitoring and improve application uptime.
• Ensure smooth feature rollouts and updates.

Software Engineer, C++, Rust

• Write and ship code utilizing Python and frameworks such as Django to deliver platform features and improve platform performance in a microservice environment.
• Take ownership of the full lifecycle of services, including deployment, monitoring, alerting, and triage to quickly diagnose and resolve production issues.
• Work in an agile environment participating in agile ceremonies and shipping code regularly.
• Participate in code reviews offering constructive feedback ensuring the team adheres to the highest standards of performance, security, and Python/Django best practices.
• Partner closely with product management, UX, QA and engineering colleagues to break down complex requirements, define technical scope, and map out architectural solutions for a microservices environment.
• Act as a mentor to engineering colleagues by sharing your backend expertise and fostering a culture of continuous learning.
• Being comfortable with AI tooling.
• Leverage AI tooling to enhance development workflows, improve code quality and assist in tasks like code generation, debugging, testing, and reviewing.

Senior Software Engineer – Backend

• Backend-Focused Full Stack Development
• Lead the design and development of backend-centric features within a full stack web application using Python, Django, Postgres, and OpenSearch
• Build and operate services in a containerized cluster environment supporting deployments across cloud and on-premises infrastructures
• Architect and implement scalable, enterprise-grade features
• Work closely with Product and Engineering teams to translate user stories and requirements into robust solutions
• Leverage AI-assisted code editors and development tools to improve productivity
• Ensure applications are secure, performant and compliant with data protection standards
• Support deployment, monitoring and troubleshooting of services

Senior Backend Full Stack Engineer

• Design, build, and maintain scalable backend services powering Strava's identity platform, including authentication, authorization, token lifecycle management, and account security.
• Partner with cross-functional teams (Product, Security, Trust & Safety, Legal, and Mobile/Web Engineering) to build identity foundations that enable safety, privacy, and growth.
• Drive technical excellence, contributing thoughtful architectural perspectives and shaping long-term identity strategies.
• Mentor and support fellow engineers, fostering a collaborative, inclusive, and high-trust environment.
• Influence system design across teams and lead discussions around security, performance, and scalability

See all jobs on JobTailor

Software Engineer, Backend, Level 5 – Ads Delivery

Senior Backend Engineer – AI Platform

Software Engineer II, Backend – ML Training, Serving

Senior Backend Engineer, Rust

Senior Software Engineer – Java

Senior Manager, Storage Engineering

Staff/Senior Software Engineer – Python, PHP

Senior Engineer, Backend/Cloud – Policy

Backend Software Engineer, API Multicloud

Backend Software Engineer

Senior Software Engineer, Data Integrations, Java/Python

Senior Backend Engineer

Senior Backend Engineer

Senior Engineering Manager – Storage Engineering

Senior Product Software Engineer, Python

PHP Developer

Software Engineer, C++, Rust

Senior Software Engineer – Backend

Senior Backend Full Stack Engineer

Senior Server Engineer II, Identity Platform