Backend Developer Jobs

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as our next Software Engineer About the job: This position is needed to build and maintain reliable applications for Twilio’s supply insights and trust. The work involves developing back-end applications and front-end for internal tools. As a Software Engineer in the team, you will be partnering with product managers, architects, engineering managers and other engineers to develop features for Messaging Supply products. You will be developing our messaging supply platform with emphasis on interfaces for Twilio’s suppliers to interact with Twilio, automation of manual tasks, and working on new features that support both internal and customer-facing applications. Responsibilities: In this role, you’ll: Design, develop, test and deploy features alongside a small, distributed collaborative team to build highly scalable and available services Collaborate other cross-functional teams, product managers, designers, and engineers to build compell

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the best work of our career and grow our skills surrounded by colleagues who have our backs. If you’re ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. Are you interested in pioneering and breaking new ground in large-scale financial data processing? Then this role might be for you. Join the Ripple Treasury Reconciliation team where you’ll be solving complex problems and having fun while passionately discussing (and arguing) with your team members! About the Reconciliation team Ripple Treasury Reconciliation platform sits at the heart of how the world's largest financial institutions and enterprises close their books and bring more control to their financial processes. Our vision is to create a completely new user experience with financial tools that have no equals on the market. With users first in mind and driven by technology. As part of Ripple, we're backed by the scale and ambition of a company reshaping global finance, giving our team the resources to modernize the mission-critical product while still moving with the speed and ownership of a smaller engineering group. If you want your code to directly touch how billions of transactions get reconciled every day, this is that kind of role. What we are looking for We are looking for a Staff Infrastructure Architect to own the infrastructure of our growing Reconciliation platform. You'll set the direction, architecture and design for our platform, focusing on performance, stability, security and how to integrate newer technologies. You will also be sett

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities: Day-to-day work with various kind of Network type devices; Create, maintain and execute automated test scripts; Identify and report bugs, ensuring proper follow-up; Perform front-end and back-end testing throughout the entire QA process; Analyse release notes, project documentation and other project artefacts to identify new or update existing test scenarios. Requirements: 3+ years AQA experience in similar position; Jenkins pipelines + DSL (Groovy); Python; Bash scripting; General understanding in Network (Internet, WiFi, VLAN, Firewall, VPN etc.); Strong understanding in MQA testing process; Experience with AI tools - Claude, Codex, etc; Fluent in English and Latvian. Nice to have: Java/JavaScript; Experience with FE automation tools; System Administration; DevOps (CI/CD setup & administration, Terraform scripts); Network administration. Benefits: International work environment and work with global development teams; Ability to deliver software that is used by millions of people across the globe; Opportunity to leverage and integrate modern AI tools into product development; Access to all Ubiquiti products; Medical insurance; Hybrid approach - office in Riga; Flexible work hours; Compensation package matching global standards, including competitive salary depending on your qualification and background (sta

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities: Day-to-day work with various kind of Network type devices; Create, maintain and execute automated test scripts; Identify and report bugs, ensuring proper follow-up; Perform front-end and back-end testing throughout the entire QA process; Analyse release notes, project documentation and other project artefacts to identify new or update existing test scenarios. Requirements: 3+ years AQA experience in similar position; Jenkins pipelines + DSL (Groovy); Python; Bash scripting; General understanding in Network (Internet, WiFi, VLAN, Firewall, VPN etc.); Strong understanding in MQA testing process; Experience with AI tools - Claude, Codex, etc; Fluent in English and Lithuanian. Nice to have: JavaScript; System Administration; DevOps (CI/CD setup & administration, Terraform scripts); Network administration. Benefits: International work environment and work with global development teams; Ability to deliver software that is used by millions of people across the globe; Opportunity to leverage and integrate modern AI tools into product development; Access to all Ubiquiti products; Medical insurance; Hybrid approach - office in Kaunas; Flexible work hours; Compensation package matching global standards, including competitive salary depending on your qualification and background (starting from 2500 up to 5000 Euro gross

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as a Staff Software Engineer where you'll shape the next generation of fraud prevention products. About the job As a Staff Software Engineer you will help develop Stytch’s fraud detection and prevention products as we bring Stytch capabilities to Twilio’s full customer base, delivering secure, developer-first identity and fraud prevention experiences. You’ll primarily work on our Device Fingerprinting product that detects bots, manual abuse, and highly sophisticated reverse engineering to help protect our customers’ from fraud and abuse. You’ll partner closely with product and engineering leadership to evolve our detection techniques to continue to stay ahead of threats. This is a rare chance to operate like a startup within Twilio: you’ll work in a high-ownership environment with startup sped, backed by Twilio’s reach and scale. Leveling & Ownership: Hiring at either the Senior or Staff level —exact leveling and scope of influ

ABOUT BASETEN Baseten powers mission-critical inference for the world's most dynamic AI companies, like Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma, and Writer. By uniting applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing quickly and recently raised our $1.5B Series F , led by Altimeter Capital, Conviction Partners, and Spark Capital. Join us and help build the platform engineers turn to ship AI products. THE ROLE We’re looking for a customer-obsessed software engineer to come ship with us. You’ll own features like multi-node training and products like serverless reinforcement learning (RL) from conception to MVP (and from MVP to GA!). You’ll work through the stack, architecting solutions from API and UI down to our infrastructure layer. You’ll fine tune models yourself to develop an understanding of user workflows. You’ll work closely with research engineers leveraging state-of-the-art training techniques to build experiences that accelerate model development and solve for real pain points. If you’re excited to dive deep into the training, let’s talk! THE PRODUCT Take a look at what we’ve built so far: Overview of the product so far Training docs overview Story of the Training product Research we've done EXAMPLE INITIATIVES Checkpointing Pipeline: Our checkpointing pipeline starts with automated checkpointing, a feature that ensures that versions of models created during training are automatically backed up to the cloud. Users are able to then deploy checkpoints seamlessly into inference servers, providing point-and-click integrations into inference frameworks like vLLM and Baseten’s Inference Stack. This enables customers to quickly evaluate the performance of their checkpoints with real traffic. Multinode training: Multinode training enables customers to easily run training jobs across multiple compute nodes, enabling

About DevRev At DevRev, we're building the future of work with Computer – your AI teammate. Unlike traditional tools, Computer unifies all your data sources, tools, and workflows into a single AI-ready platform, giving employees real-time insights, proactive suggestions, and powerful agentic actions. It extends your existing software with AI-native apps and agents that work alongside your teams and customers – updating workflows, coordinating across teams, and eliminating repetitive work. We call this Team Intelligence: human-AI collaboration that breaks down silos, brings people back together, and frees you to solve bigger problems. Backed by Khosla Ventures and Mayfield with $150M+ raised, DevRev is trusted by global companies across industries. What You’ll Do: Architect the Future of AI Infrastructure: You will design, build, and own the end-to-end platform that supports the entire lifecycle of our ML models—from massive-scale distributed training to ultra-low-latency, highly-available inference. Optimize and Serve Cutting-Edge Models: You'll implement and scale sophisticated inference stacks for LLMs using frameworks like vLLM, TensorRT-LLM, or SGLang . You’ll solve complex challenges in throughput, latency, token streaming, and automated scaling to deliver a seamless user experience. Empower AI Innovation: You will act as a strategic partner to our AI Research and Data Science teams. You’ll create a seamless developer experience that accelerates their ability to experiment, fine-tune, and deploy groundbreaking models with velocity and confidence. Automate Everything: You'll develop robust CI/CD/CT (Continuous Training) pipelines using tools like Argo Workflows, ArgoCD, and GitHub Actions to automate model validation, deployment, and lifecycle management, ensuring our systems are both agile and rock-solid. What are we looking for Experience: 5+ years in infrastructure or software engineering, with at least 2+ years laser-focused on MLOps or ML infrastructu

We're looking for an Account Executive to join our ANZ team focused exclusively on Digital Native Businesses (DNBs). This is one of the most exciting growth areas within MongoDB. You will work with some of the region's most innovative software, fintech, AI-native and technology companies, helping them build and scale modern applications on MongoDB. Your focus will be twofold Winning new customers across the ANZ Digital Native ecosystem Helping early-stage MongoDB customers expand their adoption as they build and scale AI-powered applications This role requires a true hunter mentality combined with the ability to engage technical and business stakeholders alike. You will work closely with founders, CTOs, engineering leaders, product teams and developers, helping customers move from experimentation to production-scale applications. You will collaborate closely with AWS, Microsoft and Google Cloud teams, as well as consulting and technology partners, participating in AI-focused events, startup communities and ecosystem initiatives across the region. This is a unique opportunity to sit at the intersection of enterprise technology, venture-backed innovation and the next generation of AI-powered applications. The successful candidate will become a trusted advisor to some of the region's most innovative companies as they navigate modernization, cloud transformation and AI adoption. We're looking to speak with candidates based in Sydney for our hybrid working model. Requirements 5+ years of successful enterprise technology sales experience Proven track record of new business acquisition and quota attainment Strong executive communication and relationship-building skills Self-starter with a strong hunter mindset and passion for building pipeline Comfortable operating in fast-moving, high-growth environments Experience working with AWS, Google Cloud, Microsoft or broader technology ecosystems is highly desirable Experience selling into software, fintech, SaaS, AI-native or Di

Tenstorrent is leading the industry on cutting-edge AI technology, revolutionizing performance expectations, ease of use, and cost efficiency. With AI redefining the computing paradigm, solutions must evolve to unify innovations in software models, compilers, platforms, networking, and semiconductors. Our diverse team of technologists have developed a high performance RISC-V CPU from scratch, and share a passion for AI and a deep desire to build the best AI platform possible. We value collaboration, curiosity, and a commitment to solving hard problems. We are growing our team and looking for contributors of all seniorities. We are looking for a Staff Digital Design Engineer to help define, build, and optimize high-performance IP and SoC architectures for next-gen AI and compute workloads. This role is ideal for engineers who thrive at the intersection of microarchitecture, RTL implementation, and performance-aware design. This role is hybrid, based out of Toronto, Ottawa, Boston, or Austin. We welcome candidates at various experience levels for this role. During the interview process, candidates will be assessed for the appropriate level, and offers will align with that level, which may differ from the one in this posting. Who You Are A digital design expert with a deep understanding of computer architecture and IP microarchitecture. Skilled in RTL development (Verilog/VHDL) and familiar with full ASIC flows. Comfortable optimizing for power, performance, and area (PPA) under aggressive design goals. A naturally collaborative and technical engineer — you thrive in spec definition, peer reviews, and team-wide planning. What We Need Architecture and RTL implementation of Tenstorrent’s custom IP blocks and SoC components. Performance-aware design decisions for compute, interconnect, or memory-heavy blocks. Occasional contributions to validation using emulation, FPGA prototyping, or UVM flows. Strong synthesis and timing closure awareness to support backend

Sigmoid empowers enterprises to make smarter, data-driven decisions by blending advanced data engineering with AI consulting. We collaborate with some of the world’s leading data-rich organizations across sectors such as CPG-retail, BFSI, life sciences, manufacturing, and more to solve complex business challenges. Our global team specializes in cloud data modernization, predictive analytics, generative AI, and DataOps, supported by 10+ delivery centers and innovation hubs, including a major global presence in Bengaluru and operations across the USA, Canada, UK, Netherlands, Poland, Singapore, and India. Recognized as a leader in the data and analytics space, Sigmoid is backed by Peak XV Partners and has consistently received accolades for innovation and rapid growth. Highlights include being named a ‘Leader’ in ISG’s Specialty Analytics Services for Supply Chain (2024), a two-time ‘India Future Unicorn’ by Hurun India, and a four-time honoree on both the Inc. 500 and Deloitte Technology Fast 500 lists. Technical Lead – Data Engineering As a Technical Lead, you will be responsible in building a highly-scalable and extensible big data platform that provides the foundation for collecting, storing, modeling, and analyzing massive data sets from multiple channels. This position reports to Engineering Manager. Responsibilities: Align Sigmoid with key Client initiatives Interface daily with customers across leading Fortune 500 companies to understand strategic requirements Connect with VP and Director level clients on a regular basis. Travel to client locations Ability to understand business requirements and tie them to technology solutions Facilitate in Technical Aspects Design, develop and evolve highly scalable and fault-tolerant distributed components using Big data technologies. Excellent experience in Application development and support, integration development and data management. Provide technical leadership and manage it day to day basis Guiding developers

Who Are We? Postman is the world’s leading API platform, used by more than 45 million+ developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration—enabling users to create better APIs, faster. The company is headquartered in San Francisco and has offices in Boston, New York, Austin, Tokyo, London, and Bangalore - where Postman was founded. Postman is privately held, with funding from Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Learn more at postman.com or connect with Postman on X via @getpostman. P.S: We highly recommend reading The "API-First World" graphic novel to understand the bigger picture and our vision at Postman. The Opportunity About Fern Fern is building the enterprise agent layer for APIs and is backed by Postman, giving us access to a platform used by more than 40 million developers and 98% of the Fortune 500. We operate with the focus, speed, and ownership of a startup while benefiting from Postman’s enterprise reach, distribution, and API ecosystem. As AI agents increasingly become the primary consumers of APIs, companies need more than traditional developer documentation. Agents require structured context, strongly typed interfaces, deterministic contracts, and reliable tools for discovering and executing API functionality. Fern helps enterprises make their APIs accessible to both developers and agents through four connected product surfaces: <ul&

CAPCO POLAND - WARSAW *We are looking for Poland based candidate. At Capco Poland, we’re not just another consultancy - we’re the spark behind digital transformation in the financial world. As a global leader in technology and management consulting, we thrive on helping clients tackle the toughest challenges across banking, payments, capital markets, wealth, and asset management. Role Overview We are seeking React / Java Full Stack Engineer to join our Global Asset Servicing Platform team. This is a hands-on engineering role where you will design, build, and test features end-to-end – with full ownership of code and quality. You will work across development and test automation: coding new functionality, writing unit and integration tests, and adding Cucumber-based end-to-end tests – not only for your own work but also for features built by your teammates, to ensure unbiased validation. The ideal candidate will be skilled in Java backend development and modern UI development using React. This role will work across the full stack to build a scalable, reliable, and user-friendly application. Key Responsibilities Design, develop, and maintain features using Java and React . Build responsive and modern frontend applications using ReactJS, Develop and integrate APIs and web services. Experience working with relational databases (Oracle, Postgres) Write clean, well-structured unit tests (JUnit or equivalent) alongside your code. Contribute to and maintain our automated test framework using Ruby and Cucumber : Write new Ruby step definitions as needed. Create and maintain Cucumber feature files for end-to-end testing. Write automated tests for features developed by other engineers , ensuring high-quality outcomes and reducing development bias. Champion a test-first approach , delivering code that is reliable, maintainable, and scalable. Apply performance and scalability considerations; use tools such as JMeter for load/performance testing where

Zafin is an AI platform company helping regulated institutions modernize how critical work is designed, governed, and delivered. Our technology enables organizations to move faster while maintaining the governance, accountability, and control required in highly regulated environments. Our portfolio includes Zafin AIOS , an agent orchestration platform for governed AI work; the Zafin Banking Platform , which helps banks modernize product, pricing, offers, billing, loyalty, and relationship management; and Zafin IO , an integration platform that connects data, systems, and workflows across complex enterprise environments. Headquartered in Toronto, Canada, Zafin partners with leading financial institutions across North America, Europe, the Middle East, Africa, and Asia-Pacific. As AI transforms the future of financial services, we're building the platforms that help regulated organizations adopt AI responsibly and at scale. About the Role We are looking for a QA Engineer II to join our Banking Platform organization. In this role, you will help ensure the quality, reliability, and readiness of Zafin’s banking product as it is developed, tested, and released to customers. You will be responsible for planning and executing testing across customer implementation workstreams, validating business requirements, identifying defects, and supporting release readiness. This role requires strong functional testing skills, good backend and data validation experience, and the ability to work independently in a fast-paced banking technology environment. Familiarity or hands-on experience with AI tools is a plus, as the product is evolving toward AI-enabled capabilities. What will you do? Review business requirements, functional specifications, and customer configuration details to define effective test scenarios and test cases. Perform functional, regression, integration, backend, API, and end-to-end testing for SaaS banking product implementations.

About Datalab Datalab trains models that read documents reliably at scale. The world's most important information is trapped in PDFs, scans, and files that can't easily be parsed, and getting it out correctly matters. From frontier AI labs processing training data to Fortune 500s like Siemens extracting decades of engineering records, Datalab is where businesses turn to when extraction has to be right. We’re at high 7-figure ARR. Anthropic, Legora, Booz Allen, and ElevenLabs are customers. And we have hundreds more across FAANG, frontier AI labs, healthcare, finance, government, and legal. Our tools, Chandra, Surya, Marker, and Lift, have 70,000+ GitHub stars and broad developer mindshare. We're backed by founding members of OpenAI, FAIR, and Hugging Face. Role Overview Marketing at Datalab already has real infrastructure. We run a combined launch and content calendar with a defined playbook - channels, owners, and cadence for every release - and we ship two to three launches a week against it. No one here works on marketing full-time, so nobody owns the bigger question of how we show up when a developer, a buyer, or an AI agent looks for a document parser. You’d be our first dedicated marketing hire. You’d inherit a working system rather than a blank page, and your job would be to run it reliably, then make it considerably more ambitious. The natural place to build from is our open source work, which reaches a wide audience and currently does less for us than it could. This is a hands-on role. On a team of 15, you’ll write the blog post, draft the tweets, restructure the docs page, brief the agency if we hire one, and pull the numbers yourself. We’re looking for someone who's done this work well somewhere and wants to keep doing it, rather than direct someone else who does. This role has strong potential to grow into a leadership role as we hire more people into the marketing team. An increasing share of our buyers never touch a search results page; they ask a mode

Everpure (NYSE: P) has evolved from storage pioneer to data platform, closing fiscal 2026 with $3.7 billion in revenue, its first billion-dollar quarter, and accelerating growth into FY27. Our strategic agenda spans the companies defining the next era of technology - hyperscalers, AI labs, the AI hardware supply chain, data platform providers, and the broader AI ecosystem. This type of work—work that changes the world—is what the tech industry was founded on. So, if you're ready to seize the endless opportunities and leave your mark, come join us. THE ROLE As an Associate Value Consultant, you will empower our customers to visualize the financial future of their data centers by translating complex technical shifts into compelling economic narratives. Joining our Global Value Management team, you’ll serve as the bridge between IT innovation and financial justification, collaborating with sales and finance leaders to prove the ROI of the Everpure™ Platform. This is a high-impact opportunity to master value-based selling while helping global organizations quantify cost savings, sustainability gains, and operational agility. Location: Raleigh, North Carolina or Chicago WHAT YOU’LL DO Architect Defensible Business Cases: Build and own comprehensive financial models that calculate TCO, ROI, and NPV, ensuring every customer investment is backed by transparent, audit-ready data. Quantify Strategic Value: Partner with customer stakeholders in Finance and IT to identify and measure key value levers such as power/cooling reduction, increased developer productivity, and mitigated downtime risks. Drive Consultative Discovery: Lead structured interviews and data collection workstreams to uncover "outside-in" insights that align Everpure’s solutions with specific executive business priorities. Optimize Value Frameworks: Enhance our library of reusable benchmarks and modeling templates, directly improving the efficiency and accuracy of the global sales organization’s