Senior System Engineer Jobs

About the Role Sigma is transforming how businesses run by delivering a high performance platform on the modern data architecture. Hence, we are growing the engineering team and looking for engineers who are excited to solve challenging problems, deliver impactful capabilities throughout our stack to build world-class technology. You will be part of a talented team of engineers with a shared mission to make data easily accessible for all users. What You Will Be Doing Solve challenging problems that arise in providing high performance interactive experience to enable analytics and workflows use cases on top of modern warehouses Build software using the latest developer tools and using programming languages like Rust, Go, GraphQL, Typescript Develop new algorithms and techniques for improving the performance and interactivity for enabling analytics and workflows for the world largest companies Triage product or system issues and debug/track/resolve by analyzing the sources of issues Design and implement new software features to support our fast growing user growth Collaborate with cross-functional groups - infrastructure, design, product, customer support, sales and marketing to build an innovative product capabilities Qualifications We Need 5+ years industry experience building and maintaining high-quality software Experience building and deploying robust and secure web applications in a continuous deployment environment Desire to be a great teammate and have fun at work without compromising ownership towards your work Strong sense of craftsmanship, and a healthy academic curiosity to solve challenges at sigma Strong Computer Science fundamentals Qualifications We Want (also, skills you’ll learn!) Experience building software capabilities for analyzing large scale data web applications Data driven aptitude and its application to solve distributed system problems Data model design, and API development experience to enable customer facin

About the Role Sigma is transforming how businesses run by delivering a high performance platform on the modern data architecture. Hence, we are growing the engineering team and looking for engineers who are excited to solve challenging problems, deliver impactful capabilities throughout our stack to build world-class technology. You will be part of a talented team of engineers with a shared mission to make data easily accessible for all users. What You Will Be Doing Solve challenging problems that arise in providing an interactive experience on data warehouses for data exploration and analysis Build with modern tools and languages like Rust, Go, GraphQL, Node, and Kubernetes Build backend distributed services, new algorithms and modern API to support a cloud application Triage product or system issues and debug/track/resolve by analyzing the sources of issues Design and implement new software features to support our fast growing user base Collaborate with peers and stakeholders through design and code reviews to ensure best practices amongst available technologies Qualifications We Need 2+ years industry experience building and maintaining high-quality software Experience building and deploying robust and secure web applications in a continuous deployment environment Desire to be a great teammate and have fun at work without compromising ownership towards your work Strong sense of craftsmanship, and a healthy academic curiosity to solve challenges at sigma Strong Computer Science fundamentals Qualifications We Want (also, skills you’ll learn!) Data driven aptitude and its application to solve distributed system problems Data model design, and API development experience SQL query optimization and database internals Administered cloud service infrastructure (GCP, AWS, Azure) Prior experience working at high growth company solving technical problems to enable continued success Additional Job details The base salary range for this position is $170k - $240

About the Role Sigma is transforming how businesses run by delivering a high performance platform on the modern data architecture. Hence, we are growing the engineering team and looking for engineers who are excited to solve challenging problems, deliver impactful capabilities throughout our stack to build world-class technology. You will be part of a talented team of engineers with a shared mission to make data easily accessible for all users. What You Will Be Doing Solve challenging problems that arise in providing an interactive experience on data warehouses for data exploration and analysis Build with modern tools and languages like Rust, Go, GraphQL, Node, and Kubernetes Build backend distributed services, new algorithms and modern API to support a cloud application Triage product or system issues and debug/track/resolve by analyzing the sources of issues Design and implement new software features to support our fast growing user base Collaborate with peers and stakeholders through design and code reviews to ensure best practices amongst available technologies Qualifications We Need 5+ years industry experience building and maintaining high-quality software Experience building and deploying robust and secure web applications in a continuous deployment environment Desire to be a great teammate and have fun at work without compromising ownership towards your work Strong sense of craftsmanship, and a healthy academic curiosity to solve challenges at sigma Strong Computer Science fundamentals Qualifications We Want (also, skills you’ll learn!) Data driven aptitude and its application to solve distributed system problems Data model design, and API development experience SQL query optimization and database internals Administered cloud service infrastructure (GCP, AWS, Azure) Prior experience working at high growth company solving technical problems to enable continued success Additional Job details The base salary range for this position is $170k - $240

About the Team DoorDash Labs, established in 2018, serves as the innovation hub for DoorDash, focusing on developing automation and robotics solutions to enhance last-mile logistics. The team's mission is to create technologies that support and augment human networks, aiming to improve efficiency for Dashers, merchants, and consumers alike. We’re ruthlessly focused on business impact. We are a highly senior team composed of former pioneers from a variety of different robotics industries. As of 2025, DoorDash has completed 10B lifetime deliveries. We’re focused on how to do the next 10B even better. About the Role We are seeking a highly motivated Systems Engineer to help shape the architecture and integration of our next-generation delivery platforms. In this role, you will define system requirements, interfaces, and verification strategies that connect diverse hardware, software, and operational teams into a cohesive, safe, and reliable system. You will translate high-level business and mission objectives into clear engineering specifications, ensuring our delivery platform meets performance, safety, and regulatory goals. The ideal candidate brings a strong background in complex system development, with experience in aerospace, autonomous vehicles, or other safety-critical domains, and thrives in a collaborative, fast-paced environment where clear thinking and systems-level perspective drive success. You’re excited about this opportunity because you will… Define system requirements and interfaces for delivery platforms, translating business and operational goals into verifiable technical requirements Develop and maintain system architecture and interface control documents that allocate functionality, performance, and safety constraints across subsystems and components. Lead trade studies and technical risk assessments to evaluate design options and make data-driven recommendations balancing various objectives Create verification & validation strategies (test pl

Block builds simple, powerful tools that make progress towards an economy that’s truly open to all. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the easy way to spend, send, and store money. Afterpay is transforming the way customers manage their spending over time. TIDAL is a music platform that empowers artists to thrive as entrepreneurs. Bitkey is a simple self-custody wallet built for bitcoin. Proto is a suite of bitcoin mining products and services. Together, we’re helping build a financial system that is open to everyone. Join us. The Role The Platform Security team is responsible for securing Block's cloud, compute, and network infrastructure across multiple business units including Square, Cash, and Afterpay. We discover, track, and enable the business to remediate the most critical security risks across Block's cloud ecosystems (AWS and GCP). We drive the creation of cloud security policy and best practices, measure and aggregate deviations from these policies, and develop capabilities to estimate security risk based on cloud signals and business context. This work drives Block's cloud security strategy and is the lens through which Block measures progress of our cloud security posture over time. We believe that the secure option should be the easiest option for our users. We're looking for a strong Senior Platform Security Engineer with a deep understanding of securing cloud infrastructure and services at scale to help us execute on this vision. You Will Architect and evolve cloud security guardrails. Design and implement SCPs, GCP org policies, and IAM controls that shape how Block uses cloud infrastructure for years to come. Build automation to discover, measure, and contextualize security issues. Develop integrations with CSPM/DSPM tools and internal platforms to surface and prioritize findings. Own the cloud security exception lifecycle. Buil

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 seeking a Software Driver Developer to create reference drivers for our AI-IP in a reference system. You will also support our AI-IP customer optimizing our reference driver into our customer specific systems. This role is hybrid, based out of Belgrade, Serbia. 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 Deep systems engineer with 7+ years of experience in device drivers or low-level systems programming. Strong proficiency in C and C++ with a solid understanding of hardware-software interfaces. Hands-on experience developing Linux kernel drivers, including kernel architecture, debugging, and kernel-space/user-space interactions. Experience developing drivers for high-speed I/O or interconnect technologies such as PCIe; PCIe driver development is strongly preferred. Familiar with user-mode and kernel-mode driver models and understands that Linux kernel driver development differs meaningfully from bare-metal or RTOS-based driver development. What We Need Design and evolve the driver layer that provides high-performance APIs for Tenstorrent devices. Develop and maintain user-mode and kernel-mode drivers for Te

Here at Appian, our values of Intensity and Excellence define who we are. We set high standards and live up to them, ensuring that everything we do is done with care and quality. We approach every challenge with ambition and commitment, holding ourselves and each other accountable to achieve the best results. When you join Appian, you’ll be part of a passionate team dedicated to accomplishing hard things, together. Senior Software Engineer Overview: At Appian, we’re not only about building awesome software, but also about growing our culture of passion, energy, and innovation—great people, great software! As a performance-focused Software Engineer, your mission will be to tackle our most challenging technical problems and build the tools required to solve complex performance bottlenecks. You will work alongside brilliant engineers to ensure our real-time, distributed platform operates with maximum speed, stability, and scale. Team Description: The Performance Engineering team sits at the vital intersection of core software development and infrastructure reliability. We are a squad of builders dedicated to keeping Appian fast and resilient under high-volume enterprise loads. We don't just fix slow code; we construct custom performance tooling, design automated testing frameworks, and maintain the deep observability systems that keep our platform running seamlessly. In this role, you will: Engine Custom Tooling: Build custom internal tools, automation scripts, and diagnostic software to identify, isolate, and eliminate complex platform bottlenecks. Automate Performance Testing: Create and expand libraries, frameworks, and infrastructure to enable continuous automated performance and load testing across the platform. Drive Deep Observability: Leverage modern observability stacks (Prometheus, OpenTelemetry, Loki, Grafana, ElasticSearch, and Kubernetes) to monitor, trace, and optimize real-time system behavior. Debug & Rapidly Respond: Act as a crit

Role: Senior AI Engineer Location: Hyderabad, India (Hybrid) Department: Product Development About the Role GHX is building a cutting-edge LLM-powered document understanding platform focused on classification, structured data extraction, and intelligent orchestration at scale. This is a high-impact AI engineering role where you will own the full lifecycle—from problem framing to production deployment . Initially, you will focus on prompt engineering and evaluation systems , building the quality foundation for AI performance. Over time, the role expands into agent orchestration, system architecture, and migration of rule-based systems to LLM-driven pipelines . A strong foundation in software engineering (5+ years) is essential. This role demands engineering rigor across both traditional system design and AI system behavior . Core Responsibilities 1. Prompt Engineering Design prompts for diverse document classification and extraction tasks Treat prompts as formal specifications (precise, structured, and edge-case-aware) Develop few-shot, chain-of-thought, and structured output templates Manage prompt lifecycle: versioning, testing, and rollback 2. LLM Output Evaluation Create and maintain ground truth datasets Build automated evaluation pipelines (precision, recall, field-level accuracy) Identify and resolve conceptually incorrect outputs despite surface correctness 3. AI Agent Orchestration Design multi-agent workflows for document processing Implement tool-use patterns and integrate MCP servers Optimize orchestration for scale and efficiency 4. Software Engineering Develop production-grade APIs and backend services Apply Clean Architecture / DDD principles Write maintainable, testable Python code Contribute to CI/CD, deployment, and observability systems 5. Stakeholder Collaboration Act as a bridge between business stakeholders and AI systems Translate product requirements into technical architectures Communicate system behavior, limitations, and quality

Gong harnesses the power of AI to transform how revenue teams win. The Gong Revenue AI Operating System unifies data, insights, and workflows into a single, trusted system that observes, guides, and acts alongside the world’s most successful revenue teams. Powered by the Gong Revenue Graph, AI-powered intelligence, specialized agents, and trusted applications, Gong helps more than 5,000 companies around the world deeply understand their teams and customers, automate critical sales workflows, and close more deals with less effort. For more information, visit www.gong.io. At Gong, you will join a company built on innovative products, ambitious goals, and passionate people. We are shaping the future of revenue intelligence and we want people who are excited to build what comes next. You will work with a team that dreams big, moves fast, and cares deeply about the craft and about each other. Here, transparency and trust are core to how we operate, and every person has the opportunity to make a visible impact. If you want to grow, stretch, and do work that truly matters, Gong is the place to do the best work of your career. We’re looking for an experienced, multidisciplinary Security Engineer with a strong technical foundation and the ability to learn and own new technologies and domains from the ground up.You’ll join Corporate Security Engineering within Gong’s Cyber Defense organization, You’ll design, implement, and mature the security controls that protect Gong’s business applications, workforce, and corporate environment. You’ll work closely with Cyber Defense, IT, DRE, R&D, People, Legal, and GRC to embed security controls at scale. Our strategy is AI-first and built on identity-centric controls, Zero Trust principles, and scalable automation. You’ll Own The security posture of Gong’s corporate technology stack, including AI security, identity, DLP and insider risk, EDR, MDM, browser security, SSPM/CASB, network security, and email and collaboration security. Z

Job Title: Senior QA Engineer - Performance Testing Paytm is India's leading mobile payments and financial services distribution company. A pioneer of the mobile QR payments revolution in India, Paytm builds technologies that empower small businesses with payments and commerce solutions. Paytm’s mission is to serve half a billion Indians and bring them into the mainstream economy through the power of technology. About the Role: We are seeking a skilled Performance Test Engineer to design, execute, and analyze performance tests to ensure application scalability, stability, and responsiveness under varying load conditions. The ideal candidate will have hands-on experience with industry-standard performance testing tools and a strong understanding of system architecture, monitoring, and troubleshooting. Expectations/ Requirements Develop comprehensive performance test strategies and plans aligned with system requirements, project timelines, and business goals. Understand application architecture and identify critical business transactions for performance validation. Design realistic workload models to simulate real-world usage scenarios. Create, maintain, and execute performance test scripts using tools such as JMeter, LoadRunner, Gatling, or similar. Conduct baseline, load, stress, and scalability testing to evaluate system behavior under different conditions. Monitor system performance using tools like Influx DB, Grafana, JVM monitoring tools, and MAT (Memory Analyzer Tool). Analyze test results to identify performance bottlenecks and system limitations. Collaborate with development and infrastructure teams to troubleshoot and resolve performance issues. Assess system scalability and recommend optimizations to improve performance and reliability. Generate detailed performance test reports, including metrics, findings, and actionable recommendations. Work with stakeholders to gather and validate Non-Functional Requirements (NFRs), SLAs, and KPIs. Perform API an

The Role We’re looking for a Senior DevOps Engineer to help scale and operate the infrastructure behind our platform. This is a hands-on individual contributor role focused on cloud infrastructure, automation, and reliability. You’ll partner closely with engineering teams to improve system performance, strengthen security, and enable fast, reliable deployments. What You’ll Do Design and operate scalable AWS infrastructure. Build applications with containerization technologies such as Docker and orchestration tools like Kubernetes. Implement robust monitoring and logging tools (e.g., NewRelic, DataDog, Grafana, etc). Build and manage infrastructure as code using Terraform Improve CI/CD pipelines (Jenkins and GitHub Actions) to accelerate delivery Troubleshoot production issues and lead root cause analysis Build and work in complex SDLC environments Collaborate with engineering teams to streamline development and deployment workflows What You Bring 6–10 years in DevOps, SRE, or infrastructure engineering Strong hands-on experience with AWS in production environments Experience with Kubernetes and containerized systems Proficiency with Terraform (or similar IaC tools) CI/CD experience (GitHub Actions, Jenkins, or equivalent) Scripting skills (Bash, Python, or similar) Solid Linux/Unix fundamentals Why Sureify Build systems that support millions of users Work in a high-growth, engineering-driven SaaS company Remote-first across the Americas Competitive compensation, equity, and flexible PTO Our Guiding Principles Our products are for nothing if their creators are not fulfilled in their work. We want our employees to flourish at Sureify. We do not fawn over status or titles, instead, we honor effort and intelligence. The best idea wins no matter which colleague proposed it. We do not shortcut our mission with overblown claims or false promises. Sticking to the truth is both a strategy and a principle for us. Sureify is an Equal Opportunity Employer committed to div

About Us: Samara Aerospace is revolutionizing satellite design by addressing the challenges of deploying and managing large satellite constellations. Our innovative Hummingbird spacecraft bus offers a modular and scalable platform that streamlines satellite production and deployment, significantly reducing launch costs. Hummingbird's compact architecture maximizes launch capacity, making it the most efficient and agile spacecraft in the industry. At the core of our technology is the patented Multifunctional Structures for Attitude Control (MSAC) system. Unlike traditional wheel-based pointing control systems, MSAC utilizes actuators embedded in the hinges of deployable solar panels to provide 3-axis attitude control and active jitter cancellation. This design eliminates the need for spinning wheels, reducing mass and potential points of failure, while enhancing pointing precision. Role: Samara Aerospace is seeking a Senior RF Engineer to join our growing engineering team. In this role, you will own the full lifecycle of RF systems development—from requirements definition and architectural trade studies through design, fabrication, test, and qualification. You will collaborate closely with electrical, mechanical, thermal, software, and systems engineering teams to develop high-performance RF solutions in a fast-paced, mission-driven environment. Responsibilities: Lead architectural R&D efforts for new RF communications and payload subsystems by conducting trade studies and establishing requirements Develop and maintain RF system models and simulations, perform end-to-end link budget analysis, noise and linearity cascades, and interference/co-existence assessments to validate system performance margins across operating conditions. Drive the full hardware development cycle from bench prototype through design validation and qualification testing. Defining test plans, executing characterization campaigns, and documenting results to demonstrate compliance with

We are hiring a Senior Software Engineer to join our Server Security team. The Server Security team is a development-focused group within MongoDB's core engineering organization. Operating "close to the bottom of the stack," the team builds features that enable database users to secure their data globally. You will work on critical components including: Cryptography: Queryable Encryption , at-rest data encryption, and fundamental cryptographic principles. Identity & Access: Authentication and authorization systems, TLS, and X.509 certificate management Network Security: High-performance, low-latency networking protocols (PKI, Hashing, CRLs) System Integrity: Resilience, observability, and compliance assurance within a large-scale distributed database Our team champions a strong culture of inclusivity, diversity, and collaboration. If you want to work on a collaborative team that applies distributed systems fundamentals to deliver core features of a popular database, join us! Let’s change what’s possible for application developers, system architects, and database operators. The role As a Senior Engineer, you will apply distributed systems fundamentals to deliver core security features. You will be a leader in improving MongoDB's security posture by owning features and leading investigations into complex areas of the codebase. What you’ll do: Build and test new security features in a large, feature-rich C++ codebase Work across engineering, cloud services, and support teams to coordinate feature rollouts and changes Stand for code quality and security best practices, assisting fellow engineers in writing well-reasoned, secure code Use strong diagnostic intuition to solve thorny technical issues related to distributed systems, concurrency, and OS internals This role can be remote or hybrid anywhere in the USA or Canada. We will prioritize candidates who are already located in one of these countries. Candidate Profile We are looking for a highly technical engineer w

We are hiring a Senior Software Engineer to join our Server Security team. The Server Security team is a development-focused group within MongoDB's core engineering organization. Operating "close to the bottom of the stack," the team builds features that enable database users to secure their data globally. You will work on critical components including: Cryptography: Queryable Encryption , at-rest data encryption, and fundamental cryptographic principles. Identity & Access: Authentication and authorization systems, TLS, and X.509 certificate management Network Security: High-performance, low-latency networking protocols (PKI, Hashing, CRLs) System Integrity: Resilience, observability, and compliance assurance within a large-scale distributed database Our team champions a strong culture of inclusivity, diversity, and collaboration. If you want to work on a collaborative team that applies distributed systems fundamentals to deliver core features of a popular database, join us! Let’s change what’s possible for application developers, system architects, and database operators. The role As a Senior Engineer, you will apply distributed systems fundamentals to deliver core security features. You will be a leader in improving MongoDB's security posture by owning features and leading investigations into complex areas of the codebase. What you’ll do: Build and test new security features in a large, feature-rich C++ codebase Work across engineering, cloud services, and support teams to coordinate feature rollouts and changes Stand for code quality and security best practices, assisting fellow engineers in writing well-reasoned, secure code Use strong diagnostic intuition to solve thorny technical issues related to distributed systems, concurrency, and OS internals This role can be remote or hybrid anywhere in the USA or Canada. We will prioritize candidates who are already located in one of these countries. Candidate Profile We are looking for a highly technical engineer w

Replit is the agentic software creation platform that enables anyone to build applications using natural language. With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation. The Mandate: Industry Disruption and 10x Scale: Vision: Product Foundry is Replit's internal engine for innovation . We move Replit beyond being a collaborative development environment to becoming the foundational operating system for the entire next generation of software, where AI Agents are the primary actors. The 10x Goal: Our purpose is to launch high-risk, full-stack 0→1 initiatives that define and establish entirely new, multi-billion-dollar product categories. We are seeking non-linear growth opportunities, fundamentally aiming to 10x Replit's value and addressable market by proving out unprecedented technical primitives and disruptive Go-To-Market strategies. The Audience: We build for the next generation of creators and high-leverage users and enterprises, equipping them with tools that enable them to build anything, anywhere . Candidates that do well here will certainly go on to build their own companies in the future! This is a high visibility role reporting to Execution Model: High-Agency Founding Teams Structure: We operate as a collective of in-house technical founders —not just specialized engineers. Initiatives are run by lean, autonomous squads built for velocity and maximum technical leverage. This model is centered around an Engineer DRI (Directly Responsible Individual) who maintains total ownership over the initiative's technical, product, and launch success, supported by fractional PM and Design resources. Cadence: We enforce rapid iteration and rapid market validation via 3-week sprints per initiative. This cadence forces fast deployment, immediate user feedback, and tight alignment with the internal betting table process, mirroring the intensity and speed of a lean startup. Required skills and