Python Backend Engineer Jobs

JLL empowers you to shape a brighter way . Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. We are committed to hiring the best, most talented people and empowering them to thrive, grow meaningful careers and to find a place where they belong. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward. Developer – D&C Project Controls Program Position Overview The Project Intake Developer serves as the technical backbone of the Design & Construction (D&C) Project Controls Program's intake platform. This role is responsible for the end-to-end management of the Project Intake product — from maintaining platform stability and resolving customer-reported issues, to designing and delivering feature upgrades that enhance the user experience. The Developer operates at the intersection of software engineering, customer support, and product delivery, ensuring the intake platform remains reliable, performant, and aligned with evolving business needs across AMER, EMEA, and APAC regions. A core function of this role is translating customer feedback and operational pain points into actionable technical improvements, managing the product backlog, and communicating platform changes clearly and proactively to stakeholders. The Developer is expected to own the full product lifecycle — triaging defects, shipping enhancements, maintaining data integrity, and building trust with customers through transparent, timely communication about what's changing and why. Key Responsibilities </p

What if the work you did every day could impact the lives of people you know? Or all of humanity? At Illumina, we are expanding access to genomic technology to realize health equity for billions of people around the world. Our efforts enable life-changing discoveries that are transforming human health through the early detection and diagnosis of diseases and new treatment options for patients. Working at Illumina means being part of something bigger than yourself. Every person, in every role, has the opportunity to make a difference. Surrounded by extraordinary people, inspiring leaders, and world changing projects, you will do more and become more than you ever thought possible. Position Summary Software Test Engineer II is responsible for ensuring the quality, reliability, and performance of software products through the design, development, and execution of comprehensive test strategies. Working within an Agile development environment, this individual collaborates closely with software engineers, product owners, and cross-functional teams to identify defects, validate requirements, and drive continuous quality improvements throughout the software development lifecycle. This role is expected to leverage AI-assisted development and testing tools to enhance productivity, improve test coverage, accelerate defect detection, and continuously optimise software quality processes. The successful candidate will demonstrate a quality-first mindset while embracing emerging technologies and modern engineering practices. Scope of Responsibilities Develop, execute, and maintain manual and automated test cases based on product requirements and design specifications. Design and implement test automation frameworks and testing tools to improve test coverage and efficiency. Leverage AI-assi

We are looking for a full-stack SWQA Tools Development Engineer with experience leading people and projects to join our Certification team. You will collaborate with a team of dedicated engineers to tackle some of the most sophisticated challenges in innovative technology. Mentored by the best minds in the industry, you will work on exciting, high-impact projects. Your immediate focus will be to learn about testing and existing A&T for the various certification programs the team covers (HLK, HDMI/DP, ESXi, Android CTS, etc.). Then you will provide new AI-driven solutions to improve productivity, tracking, and efficiency across our end-to-end workflows. This will lead to you owning certification programs and managing them across the company and with third-party certification authorities. What you'll be doing: Apply various certification kits to test software and hardware features of our products, ensuring certification-level quality across all stages of the development cycle, from emulation to production. This includes a wide range of functional areas, including graphics, display, audio, multimedia, USB, hypervisors, and virtual machines. Develop a detailed understanding of all functional and process-related areas in the hardware and functional certification ecosystem. This knowledge will enable you to take full ownership of multiple Cert programs. You will also lead other Cert engineers on the distributed team and work with various multi-functional teams within the company. Work actively with existing UI and automation tools by integrating internal and external APIs. Formulate and deploy multi-agent systems to optimize workflows and build new automated solutions. Communicate accurate, timely, and effective status to management and other key internal/external partners. As a SWQA Tool Developer, you will focus on process definition and improvement to support the team and company's success. Yo

Who We Are At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. Who You Are You are a thoughtful software engineer who wants to make other developers successful. You enjoy building products that are clear, reliable, and pleasant to use, and you are energized by learning how real customers and partners use an API, not just how it is supposed to work on a diagram. You have solid engineering fundamentals and are developing confidence across web applications, APIs, and integration patterns. You ask good questions, write what you learn down, and care about shipping complete experiences: code, tests, documentation, observability, and a clear path for someone else to use what you built. On this team, you will build the connective tissue of the Justworks developer ecosystem while supporting partner integrations. You will learn directly from developer and partner feedback, contribute to hands-on solutioning, and turn repeatable needs into self-service capabilities. What You Will Work On Build, test, deploy, and operate developer-facing experiences such as developer portal, documentation tooling, SDK improvements, quickstarts, code samples, and integration templates. Contribute to partner integration work b

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team The AI Build team is a new, industry-focused team dedicated to building with the world’s leading and fastest-scaling AI companies. We work alongside Stripe’s AI Solutions Architecture and GTM teams, and across Stripe’s product suite to help customers adopt emerging products, close interoperability and 0→1 solution gaps, and bring field learning directly into Stripe’s product roadmap. The team owns strategic proof-of-concept engagements across the pre- and post-sales lifecycle, complementing Stripe’s AI account teams and the product depth of Stripe’s specialist teams. What you'll do As a Solutions Engineer on the AI Build team, you’ll work directly with frontier AI companies on the payments, billing, and monetization infrastructure underlying their core businesses. You’ll own complex proof-of-concept engagements on Stripe’s frontier products, from initial scoping through activation and handoff, combining customer discovery, solution design, rapid prototyping, and cross-functional leadership. You won’t simply implement a finished product: you’ll build with customers, identify where Stripe’s products or integrations need to evolve, and help customers feel as though they are inside our product roadmap. Responsibilities Own strategic POCs end to end: Sell, scope, and lead proof-of-concept engagements from initial customer commitment through activation. Build with customers: Work deeply with users’ engineers and technical leaders

Who We Are At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. Who You Are You are a senior product engineer who enjoys solving hard problems where software, APIs, and real developer workflows meet. You can take a partner's desired customer experience, understand both sides of an integration, and deliver a practical, supportable solution with the capabilities that are available today. You bring strong API and web-platform fundamentals, communicate comfortably with external technical audiences, and care as much about the developer's path to success as the code itself. You are not satisfied with repeatedly solving the same problem by hand: you turn what you learn from partner work into better SDKs, documentation, tooling, and integration patterns. What You Will Work On Independently lead technical discovery and solutioning for priority partner integrations, including partner API research, data mapping, authentication and authorization flows, architecture choices, implementation support, and launch readiness. Build and maintain high-quality developer ecosystem capabilities: portal experiences, documentation tooling, SDKs, sample apps, quickstarts, integration templates, and developer-support automat

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform. We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler. Role We are looking for a Staff DevOps / Platform Engineer to join our team. This is a Hybrid (3 days a week on-site in Mohali) role, reporting to the Director, Product Revenue in the Product Operations department. This individual contributor role owns DevOps, AWS infrastructure, release reliability, security hygiene, and platform maintainability for a business-critical internal platform while leveraging practical AI-assisted development workflows to improve delivery speed and quality. What you’ll do (Role Expectations) Own DevOps, CI/CD, deployments, monitoring, logging, production support, and operational reliability for an existing business-critical internal platform Manage and improve AWS infrastructure using Terraform, including secure access controls, integrations, secrets practices, and infrastructure hygiene Ensure weekly releases are safe through testing, rollback planning, monitoring, post-release che

Role Overview: Citi’s Banking Technology organization is seeking a highly hands-on Lead Software Engineer to design, build, and deploy cutting‑edge AI solutions for Investment, Corporate, and Commercial Banking. This role focuses on implementing scalable, agentic AI frameworks and generative AI solutions within small, agile squads. The successful candidate will operate with an AI‑first mindset , emphasizing rapid prototyping, MVP‑driven development, and iterative delivery of production‑grade AI capabilities. Key Responsibilities: AI Solution Development: Design, implement, and deploy scalable agentic AI frameworks and generative AI solutions for critical business use cases, ensuring robustness, performance, security, and reliability. Agentic Systems: Develop and integrate agentic AI systems leveraging multiple model providers and platforms (e.g., OpenAI, Anthropic, Google APIs). Full‑Stack AI Engineering: Build full‑stack applications integrating LLM‑driven workflows and AI coding tools (e.g., Devin, GitHub Copilot). Iterative Delivery: Drive an MVP‑first, rapid‑iteration approach with continuous experimentation and improvement. Evaluation & Optimization: Define and implement metrics, evaluation strategies, and feedback loops to continuously improve AI system performance and behavior. Emerging Technologies: Research, prototype, and integrate advances in agent‑based, autonomous, and generative AI technologies. Technical Collaboration: Contribute hands‑on within cross‑functional teams and provide technical guidance and mentorship to junior engineers. Domain Alignment: Ensure AI solutions are well‑aligned to banking and financial services requirements, constraints, and business outcomes. Qualificatio

At Freddie Mac, our mission of Making Home Possible is what motivates us, and it’s at the core of everything we do. Since our charter in 1970, we have made home possible for more than 90 million families across the country. Join an organization where your work contributes to a greater purpose. Position Overview: Are you looking to be part of a technology team beyond the ordinary? A place full of exciting challenges and the engineers up to solving them? Then welcome to Financial Engineering! This is the place where the models become software, where many of the numbers that drive our business decisions are produced. Our systems are used for interest rate and credit risk management, investment analysis and trading, security issuance, automated loan underwriting, distressed loan decisions, economic and regulatory capital, property valuation, financial reporting, economic and GAAP forecasting, and more! Our Impact: Model Application Development team is responsible for converting models to application software. We evaluate millions of loans per day using the latest ML algorithms. We turn ML algorithms to APIs using web services. We are responsible for implementing underwriting, servicing and loss mitigation models Your Impact : Automating and deploying Financial Models developed using ML algorithms. Maintaining underwriting models, credit data processing. Deploying model configuration with market and economic data for loss mitigation models. Providing APIs to Financial Models to integrate with IT applications. Performance tuning and stress testing Models. Participating in model tie outs. Identifying and resolving any issues in reconciling with model results. Fixing software security vulnerabilities identified in SAST and FOSS scanning. Code review and guiding junior level developers. <u

At Freddie Mac, our mission of Making Home Possible is what motivates us, and it’s at the core of everything we do. Since our charter in 1970, we have made home possible for more than 90 million families across the country. Join an organization where your work contributes to a greater purpose. Position Overview Are you a seasoned software engineer looking for an opportunity work with a variety of technology and make a meaningful contribution to the team? We have an opportunity to join in New Technology Adoption team within Single family Division where you will work in a fast-paced environment to research, implement strategic technical capabilities, champion architectural excellence, research prototype and enable adoption in a large scale on the best practices. Our Impact: Single Family’s NTA line of business enables Best Practices of Modern Applications to the BTO teams by building strategic technology capabilities, research and prototype reference implementation patterns and supports adoption by training, coaching and other meaningful ways. Your Impact: Lead technical and architectural decisions that shape system design, infrastructure strategy, and configuration optimization Analyze business requirements, propose design alternatives aligned with the technical roadmap, and architect microservices-based solutions leveraging Java/JEE frameworks, modern UI technologies, Docker, AWS etc Provide guidance to the project team on high level design, ensuring that the design/solution is consistent with the approved architecture Developing software solutions by studying organizational needs; conferring with users; studying systems flow and work processes; investigating problem areas; following the spec driven development principles. Research, implement, promote “Best Practices” within and outside team for wider ado

Block is one company built from many blocks, all united by the same purpose: economic empowerment. We build technology that increases access and independence for sellers, individuals, and artists around the world. Working at Block means working on and across our brands—Square, Cash App, Afterpay, TIDAL, Spiral, and Proto— in roles that connect, enable, and push all of them forward faster. We’re remote-first by design and operate with intelligence at the center of everything we do. At Block, you'll be challenged by some of the brightest, most creative minds in the industry and have the tools and autonomy to do the most meaningful work of your career The Role The Network Edge Security team builds the tools that provide important insights to our API Security posture and trustworthiness of traffic flowing into our systems. Our capabilities use machine learning, streaming analytics, and significant data analysis to provide insights into understanding our network edge risk exposure and the true sources of our request flows. The team’s primary focus is up-leveling our API security posture for downstream products and services. However, there is also a need at times to respond quickly to emerging threats to take action at the edge to provide immediate relief. The team is small, requiring nimbleness and flexibility to stay ahead of threat actors. You should have a strong passion for the problem space – needing to understand a significant range of knowledge around Content Distribution Networks (CDN), analytical tools, network protocols and behavior, as well as authentication and authorization systems. You will work closely with many teams across the organization both engineering and operational to gain the insights required to understand the problem space as well as monitor the effectiveness of our solutions. You Will Respond and mitigate emerging threats and attacks at our network edge by leveraging WAF rules, bot vendors, and other CDN-native technologies Help build ou

Who We Are At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. Senior Software Engineer, Frontend Department Engineering Who You Are You’ve been building web applications for a while now and are comfortable ramping up on an existing product quickly. You’ve mastered at least one frontend framework, and know how to build highly reliable, modular systems that many people can collaborate on at the same time without stepping on each other’s toes. You have a strong sense for good design, and won’t stop until the user experience is just right. As a Software Engineer, you will be a part of our Frontend Engineering team, focusing on delivering products and capabilities that power Justworks products. You will leverage your experience working with customer-facing applications and design with performance and security in mind. You will be working primarily in JavaScript/TypeScript and prior experience is preferred. Your Success Profile What You Will Work On You’ll be a part of a team developing frontend web apps for both internal and public use. Gather requirements Partner with your team lead to produce clean, effective, on-brand user experiences Implement designs with a high level of fidelit

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. We are looking for a strong Senior Software Engineer in Test (SET) to build scalable automation frameworks for multi-language SDKs, Model Context Protocol (MCP), and AI-powered workflows. The role focuses on SDK testing, MCP protocol validation, prompt automation, and developer productivity tools. Strong programming and framework development skills are essential; UI and API automation are secondary. Key Responsibilities Design and develop reusable automation frameworks for SDKs across multiple languages, including TypeScript/JavaScript, Python, Java, and Go. Automate SDK functionality, compatibility, error handling, integration, and release validation. Build and maintain MCP test frameworks to validate clients, servers, tools, resources, prompts, transports, and protocol interactions. Develop automated tests for prompts, AI workflows, tool calling, structured outputs, and LLM response quality. Develop and maintain automated test coverage for XAA, validating functionality, integrations, error handling, and reliability across supported workflows. Build reusable test utilities, mocks, test harnesses, and developer productivity tools. Integrate automated tests into CI/CD pipelines and troubleshoot flaky tests, failures, and infrastructure issues. Leverage GitHub Copilot, Claude Code, and other GenAI tools for test generation, debugging, and framework development. Collaborate with developers, architects, and platform teams to improve quality, reliability, and re

Strength in Trust OneTrust’s mission is to enable innovation through the responsible use of data and AI. We believe that ensuring data is trusted shouldn’t slow teams down—it should accelerate what’s possible. This led us to develop the first technology platform for responsible data use in 2016. Today, with AI representing the latest and most impactful expansion of data yet, OneTrust is once again redefining what responsible innovation looks like. OneTrust, the AI‑Ready Governance Platform™, unifies regulatory intelligence, automation, and connected governance workflows so businesses can continue to move at the speed of AI while ensuring good governance to prevent data misuse at scale. Trusted by thousands of organizations worldwide, OneTrust is shaping the future where trusted data becomes a transformative force for business and society. Strength in Trust OneTrust’s mission is to enable innovation through the responsible use of data and AI. We believe that ensuring data is trusted shouldn’t slow teams down - it should accelerate what’s possible. This led us to develop the first technology platform for responsible data use in 2016. Today, with AI representing the latest and most impactful expansion of data yet, OneTrust is once again redefining what responsible innovation looks like. OneTrust, the AI‑Ready Governance Platform™, unifies regulatory intelligence, automation, and connected governance workflows so businesses can continue to move at the speed of AI while ensuring good governance to prevent data misuse at scale. Trusted by thousands of organizations worldwide, OneTrust is shaping the future where trusted data becomes a transformative force for business and society. The Challenge OneTrust is seeking a Technical Specialist to join our R&D Customer Engineering organization and help drive innovation across our AI Governance portfolio. This role combines the technical depth of a software engineer with t

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary Join us at the start of a new era in health care where technology is transforming how and where care is delivered, creating a more connected, effective care experience for all. Our mission at Signify Health is to build trusted relationships to make people healthier. We do this by transforming the home into a health hub through a combination of data, technology & people. We are building a unified technology platform for value-based care that is improving care and reducing spending by treating patients in lower-cost settings and linking providers’ payments to patient outcomes. Signify Health is driving this industry transformation and solving some of the most challenging problems in healthcare – this is where you come in! About the Role As a Staff Software Engineer, you’ll be a key member of a collaborative team responsible for design, delivery and operation of business-critical, distributed systems. We’re looking for technically strong, passionate people with an entrepreneurial spirit to build and sustain innovative solutions. Required Qualifications 7 years of software development experience. Strong foundation in software engineering: problem solving, data structures, algorithms, patterns, concurrency. Experience as a polyglot soft