Lead Principal Software Engineer / Systems Architect

At EngFlow, we empower developers to streamline their software building and testing processes. Our innovative cloud-based and distributed service significantly enhances developer workflows through remote execution and intelligent caching, resulting in improved efficiency, productivity, and product quality.Backed by leading investors, EngFlow is at the forefront of transforming the software development landscape. We deliver solutions that accelerate builds by tenfold or more, while our observability platform offers actionable insights for optimization. Founded by prominent contributors to Bazel, we create tools that enable engineering teams—from dynamic startups to established Fortune 500 companies—to boost developer velocity and enhance build performance.Find out about our mission, culture, and team: EngFlow | Watch our VideoAs a Software Engineering Manager specializing in build systems, compilers, and programming languages, you will lead a talented engineering team and spearhead the development of pivotal features for our platform. You will have a significant impact on collaborative projects involving Bazel, gRPC, Goma, Soong, CMake, and other open-source initiatives, addressing intricate scalability and performance challenges. This role presents abundant opportunities to explore cutting-edge technology and contribute to a scalable product utilized by some of the most exciting tech companies globally.You will report directly to the Head of Product Engineering, and your responsibilities will encompass project leadership, team management, and direct contributions to product and platform engineering. Over time, this position may evolve from an individual contributor role to a managerial position.

Remote - US.At EngFlow, we empower developers to streamline their software builds and testing processes. Our innovative cloud-based, distributed service optimizes developer workflows through remote execution and caching, significantly enhancing efficiency, productivity, and overall product quality.Supported by leading investors, EngFlow is transforming the way organizations build software and deliver thoroughly tested products. Our solutions can accelerate builds by a factor of 10 or more, while our observability platform offers actionable insights for optimization. Founded by prominent contributors to Bazel, we create tools that enable engineering teams—from startups to Fortune 500 companies—to boost developer velocity and enhance build performance.Discover more about our mission, culture, and team: EngFlow | VideoAs a Software Engineer specializing in build systems, compilers, and languages, you will collaborate with engineers who have developed Bazel and contribute to key open-source projects such as gRPC, Goma, Soong, and CMake. You will face intricate challenges related to real-time performance, scalability, and build systems, while experimenting with cutting-edge technologies to enhance the EngFlow platform.You will have the chance to develop core features of our platform, which powers the builds for leading companies like Brave Software, Blue River Technology, and Snap.Key Responsibilities:Build Systems Expertise: Focus on essential features related to build systems and compilers, emphasizing scalability and real-time performance.Open-Source Contribution: Enhance and contribute to open-source projects such as Bazel and gRPC.Platform Development: Address complex challenges and develop scalable systems that boost developer productivity for global tech companies.Collaboration: Partner with core engineers who created Bazel and experiment with advanced technologies to enhance our platform.Operational Excellence: Uphold high standards for software delivery at scale and ensure operational excellence.

Category Labs (previously Monad Labs) is a dynamic team of systems engineers and researchers dedicated to pioneering decentralized technology. Our mission is to create transformative solutions that significantly improve current blockchain technologies. Following a successful $225 million Series A funding round led by Paradigm, we are eager to expand our talented team.The RoleWe are in search of a highly skilled compiler engineer to engage in innovative greenfield projects aimed at enhancing bytecode execution. Your responsibilities will include developing a bytecode execution graph builder that facilitates speculative pre-execution of potential control flows. This role demands extensive research and engineering expertise, with the potential to secure billions of dollars within our platform. Experience in cryptocurrency is not a prerequisite.Your ResponsibilitiesEngage in performance-driven greenfield projects within a fast-paced startup atmosphere.Conduct research to explore methods for accelerating EVM bytecode execution.Design and implement high-performance production systems.Why Join Us?Stimulating Challenges. Tackle complex problems with significant impacts on the future of technology.Immense Potential. The Ethereum Virtual Machine (EVM) standard is widely used, yet existing EVM-compatible chains struggle with speed. Our innovations provide developers with the perfect blend of portability and performance, paving the way for widespread cryptocurrency adoption.The Right Team. Join a small, exceptional group where engineers and researchers constitute 90% of our workforce.Collaborative Culture. We are a compact team with ambitious goals, unified by a culture of teamwork, humility, and high-quality output. As an early member, your contributions will help shape our culture.Competitive Compensation. Enjoy a competitive salary along with an equity package.Growth Opportunities. We are well-funded, supported by leading venture capitalists like Paradigm, Electric Capital, Greenoaks, Dragonfly, and Coinbase Ventures. This is a rare chance to join a lean team where you will learn and grow as we scale.

About BasisBasis is a pioneering nonprofit organization dedicated to applied AI research, driven by a dual mission.Firstly, we aim to deepen our understanding and development of intelligence. This involves establishing the mathematical foundations of reasoning, learning, decision-making, understanding, and explanation, along with creating software that embodies these principles.Secondly, we strive to enhance society’s capacity to tackle complex challenges. This means broadening the scale and complexity of the problems we can address today, while also accelerating our future problem-solving capabilities.To realize these aims, we are constructing an innovative technological framework inspired by human reasoning and fostering a collaborative organization that prioritizes human values.About the RoleAs a Research Scientist at Basis, you will play a crucial role in advancing our understanding of the theoretical, mathematical, and computational principles underlying intelligence.Our Research Scientists possess key characteristics:Outstanding technical expertise—strong mathematical and computational foundations.A creative builder’s mindset—capable of designing, constructing, and refining complex systems based on foundational principles.Commitment to scientific rigor—engaging in high-quality, robust scientific inquiry without hesitance to experiment, learn from mistakes, and explore unconventional ideas.At Basis, collaboration is key, both within our teams and with external partners. We seek individuals who thrive in collaborative environments and are eager to tackle challenges that transcend individual capabilities.Programming Languages Research ScientistsThis role is tailored for experts in the design, implementation, and analysis of programming languages. You will assist in the design and implementation of the foundational computational reasoning systems under development at Basis.Key focus areas of programming languages research include compiler design, partial evaluation, program analysis, abstract interpretation, and program transformation. This work is conducted within the context of constructing reasoning systems, leading to engagement with topics such as probabilistic programming, automatic differentiation, and SAT/SMT solvers.Expectations:Possess a PhD (or equivalent experience) in a relevant field.

About the PositionJane Street is seeking a skilled Software Engineer with expertise in language compilers and runtime systems. You will join our dedicated team, responsible for maintaining a robust framework utilized across various applications, including financial modeling, risk assessment, and custom alert notifications. Our innovative system processes a complex, dynamic graph of user-defined computations in real-time and in parallel. We are particularly dedicated to enhancing performance and scalability while tackling challenges related to programming language implementations, efficient computation graph scheduling, and precise resource usage metrics.About YouYou possess a strong foundation in compilers, scheduling, dynamic graph systems, parallel runtimes, or a related discipline.You have significant experience in performance analysis and optimization.Prior knowledge of OCaml or functional programming languages is not a prerequisite.

About the RoleSigma Computing is revolutionizing the field of business intelligence by making intricate data analysis straightforward and accessible through our high-performance platform designed for the modern data stack. The Compiler Team is integral to this mission, converting user-driven spreadsheet operations into highly optimized SQL queries, which empowers users to perform exploratory analytics seamlessly on cloud data warehouses. As a member of the Compiler Team, you will collaborate with a talented group of engineers focused on developing the core systems and abstractions that enhance Sigma’s user-friendly spreadsheet interface, ensuring speed, reliability, and scalability for all users.What You Will Be DoingAddress core challenges at the intersection of data modeling, query compilation, and large-scale interactive analytics, enabling end-users to query data warehouses effectively without requiring deep technical expertise.Design, build, and maintain advanced compiler infrastructure and intermediate representations that convert spreadsheet operations into optimized query plans.Implement advanced optimization techniques to enhance performance and accuracy across diverse query workloads and data architectures.Contribute to both backend (Rust) and key frontend foundations (TypeScript), evolving crucial abstractions that facilitate end-to-end workflow optimizations and introduce new features.Debug, analyze, and resolve complex issues, ensuring robustness and maintainability within a rapidly evolving product.Work in collaboration with engineers and product stakeholders to review designs and code, promoting technical best practices and architectural decisions across the team and company.

Join our dynamic team at Studco Building Systems as a CNC Operator, where you will play a critical role in the operation of our advanced manufacturing equipment. You will be responsible for the efficient operation of our EZ Concept CNC Turrett and Folding machines, along with our specialized Door machine, ensuring that our in-house production runs smoothly and effectively. A solid understanding of the EZ Concept product line is essential for maintaining our high standards of quality control.Key Responsibilities:Operate two EZ Concept CNC Turrett machines to enhance in-house manufacturing capabilities.Assist with production tasks on the CNC Door Machine.Bend frames and other construction materials using folding machines as required.Ensure that the operator workstation is set up properly for optimal performance.Maintain a clean and organized work environment to promote safety and efficiency.Demonstrate a high mechanical aptitude with a basic understanding of equipment operation and troubleshooting.Conduct thorough inspections of parts and technical drawings to ensure quality standards are upheld, making adjustments as necessary.Communicate any quality issues or concerns clearly and promptly to the shift supervisor.Read and interpret measurements using a tape measure, protractor, and other measurement tools.Experience with CADMAN B or similar software is a plus but not mandatory.Perform all required physical tasks, which may include bending, lifting, and standing for extended periods.Work with a sense of urgency to meet production demands and resolve any issues promptly.Possess strong analytical and problem-solving skills.Adhere to all safety policies and equipment handling practices outlined by the company.

COMPANY OVERVIEWKKR & Co. Inc. is a prominent global investment firm specializing in alternative asset management and offering comprehensive capital markets and insurance solutions. With a steadfast commitment to generating attractive investment returns, KKR employs a disciplined investment philosophy, top-tier talent, and actively supports growth within its portfolio companies and the communities they serve. The firm sponsors investment funds focused on private equity, credit, and real assets, and collaborates with strategic partners managing hedge funds. KKR’s insurance subsidiaries provide innovative retirement, life, and reinsurance products through the management of Global Atlantic Financial Group.TEAM OVERVIEWThe Investment Technology group at KKR is at the forefront of developing and operating systems that drive the entire investment lifecycle—from deal sourcing and portfolio construction to risk management and monetization. We engineer platforms that integrate data, personnel, and insights across sectors like Private Equity, Credit, Real Estate, Infrastructure, and Capital Markets, empowering investment teams to make informed, rapid decisions at scale. Our mission is to revolutionize KKR's investment strategies by creating unified, data-centric platforms that enhance efficiency, transparency, and alpha generation.POSITION SUMMARYAs a Lead Engineer II, you will take on a pivotal role as a senior hands-on technical leader, orchestrating cross-functional efforts and delivering complex projects. You will leverage your architectural expertise and leadership skills to ensure effective execution amidst ambiguity.

About the Position We are thrilled to offer research internships in our Tools and Compilers team at Jane Street. We are seeking PhD and master's students with exceptional research backgrounds in programming languages, compilers, verification, and associated fields. The Compilers team at Jane Street is dedicated to enhancing OCaml as a cornerstone for our expanding technology ecosystem, working closely with the broader OCaml community. Our efforts span various aspects of the compiler, aiming to simplify the process for developers to articulate their concepts in OCaml, augment the efficiency of the generated code, and enhance the usability and speed of the OCaml compiler itself. Over the years, we have enriched the type system to incorporate innovative language features, rebuilt the optimizer from the ground up, and implemented feedback-directed optimization. We also enhance the surrounding toolchain, developing tools for profiling, debugging, documentation, and build automation. The majority of our work is open-source, and we strive to contribute as much as possible back to the mainstream OCaml compiler. During the application process, we will collaborate with you to find a project that aligns with your research expertise and interests. Some areas we are keen to explore include: Type systems that track locality and uniqueness Superoptimization Compiler testing and validation Throughout the internship, you will work closely with your mentors on a specific project for approximately 10-12 weeks. You will learn about our daily use of OCaml, gain insight into the libraries and tools that are fundamental to our internal systems, and better understand the diverse range of challenges we tackle daily. You will have the opportunity to experiment with new ideas and apply cutting-edge research to a large, actively developed production codebase. Additionally, you will have access to both physical and virtual educational resources, attend guest speaker sessions and social events, and hopefully gain a genuine sense of what it would be like to work with us full-time.

Standard Template Labs is an innovative startup operating in stealth mode, dedicated to revolutionizing IT Service and Configuration Management through AI technologies. Supported by prominent investors, we are at the forefront of integrating AI, graph-based architectures, and cutting-edge design to transform enterprise technology management.About the Role:We are seeking a Staff Software Engineer who excels at the crossroads of AI systems design, large-scale distributed infrastructure, and product innovation. In this role, you will spearhead technical projects that manifest AI-native functionalities—developing resilient, scalable systems that incorporate LLMs, data-driven automation, and graph intelligence into enterprise processes.This position is ideal for a hands-on leader who is not only proficient in coding but also adept at mentoring others and shaping technical strategies in an AI-centric environment.Key Responsibilities:AI-Driven Systems EngineeringCraft and implement AI-native architectures that integrate LLMs and intelligent automation into ITSM and CMDB workflows.Utilize LLMs, embeddings, and retrieval pipelines to enhance natural language interfaces, knowledge synthesis, and reasoning within our platform.Collaborate with product, design, and data teams to embed AI throughout the product experience—from backend systems to user-facing features.Technical OwnershipTake end-to-end ownership of intricate systems: design, architecture, deployment, and reliability in production.Navigate architectural choices while balancing immediate performance with long-term scalability and sustainability.Contribute to defining our AI-first engineering stack and methodologies for prompt orchestration, model integration, and continuous learning.Hands-On EngineeringDevelop clean, scalable, and testable code that pushes the boundaries of AI-enabled systems.Design and enhance distributed, event-driven systems and APIs capable of handling data and inference at scale.Perform in-depth code reviews and optimize performance across high-traffic production environments.

At Altana, we are redefining the landscape of global trade through our innovative AI-powered product network. Our mission is to empower governments and businesses, fostering a more resilient and secure global economy while ensuring seamless trade operations.The Opportunity at AltanaJoin our dynamic Engineering team, where you will be instrumental in developing platforms, APIs, services, workflows, and logical architectures that bring our vision to life. Our AI-driven platform is designed to handle vast amounts of data and serve a diverse array of clients. This complex system will challenge and expand your engineering skills in multiple dimensions. You will collaborate closely with our Data Scientists to analyze world-scale datasets, write scalable code that unveils unprecedented insights, and create APIs that fulfill our product vision.

Medicircle is seeking an innovative and dynamic Lead Software Engineer to join our talented team in New York. In this role, you will lead software development projects, mentor junior engineers, and contribute to the architectural design of our applications. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet the needs of our users.

Continua is at the forefront of innovation with our AI agent, designed to enhance group conversations by streamlining planning, coordination, and information retrieval. Backed by industry leaders like Google and Bessemer Venture Partners, we are shaping the future of socially-intelligent AI.With our rapid growth in recent months, we are seeking a talented individual to elevate the quality of our AI agent experience and help us scale to new heights.This is a hybrid role based in New York, NY, requiring onsite presence 3+ days per week.

JOB SUMMARYWe are seeking a talented and experienced Korean linguist to serve as a Language Lead Backup for our key account. This role is crucial as it involves stepping in to assume the review responsibilities in the absence of our primary Hebrew Language Lead or when additional support is required.As the primary reviewer, you will be responsible for conducting comprehensive linguistic reviews and quality assurance checks, ensuring all content adheres to the highest standards and aligns with client-specific guidelines. This role demands attention to detail and a proactive approach to maintaining quality.The ideal candidate will be available to work during PST business hours (9:00 AM – 5:00 PM) to accommodate client delivery schedules.

About the PositionJane Street is seeking a skilled Software Engineer with extensive experience in programming languages to join our dynamic team. Our OCaml Language team is dedicated to enhancing the OCaml programming language, serving as the backbone of our expanding technology stack. We collaborate closely with the broader OCaml community to address various aspects of the language, making it more accessible for developers to articulate their ideas in OCaml, improving the performance of the generated code, and optimizing the OCaml compiler for better speed and usability.Throughout the years, our team has made significant advancements, including extending the type system to support innovative language features, completely re-engineering the optimizer, and introducing feedback-directed optimization. We also work on enhancing the surrounding toolchain, developing tools for profiling, debugging, and documentation generation. The majority of our projects are open-source, and we strive to contribute as much as possible back to the mainstream OCaml compiler.About YouWe are looking for candidates with several years of practical experience in language design and implementation within industrial settings for this specialized role on the OCaml Language team. While research experience and publications in programming languages are advantageous, they are not mandatory. Previous knowledge of OCaml or functional programming languages is not a requirement.

Continua has pioneered an innovative AI agent that seamlessly integrates into group conversations, simplifying planning, coordination, and information retrieval. Backed by industry leaders such as Google and Bessemer Venture Partners, Continua is at the forefront of developing socially-intelligent AI solutions.In light of our impressive growth trajectory, we are eager to welcome an experienced systems software engineer who will elevate the quality of our AI agent experience and help scale our operations to new heights.This is a hybrid position based in New York, NY, with in-office work expected 3+ days per week.Key Responsibilities:Architect, develop, and optimize backend services and APIs using Python (and preferably Go) to support our AI agent platform.Collaborate with machine learning engineers to incorporate large language models (LLMs) into production systems effectively.Lead feature development from concept to deployment: gather requirements, code, test, and iterate.Enhance system reliability and scalability by improving testing processes, eliminating performance bottlenecks, and refining infrastructure.Work closely with cross-functional teams, including our CEO, product manager, and designers, to transform product vision into technical solutions.Engage in on-call rotations and production maintenance to ensure a superior user experience.Your Profile:You are a seasoned Systems Software Engineer with a solid understanding of both backend and frontend systems. You possess a balance of technical expertise and product insight, creating reliable, user-centric applications that can scale effectively. You thrive in a fast-paced startup environment, collaborate across disciplines, and take ownership of features from inception to launch.Your adaptability in ambiguous situations, enthusiasm for emerging AI technologies, and commitment to a hybrid working model in New York City will make you an ideal fit.7+ years of experience in infrastructure and backend engineering.Solid understanding of database technologies, such as SQL, Postgres, etc.Strong product intuition, balancing user needs with technical feasibility.Comfortable working across the entire technology stack, from frontend to backend and data pipelines.Familiarity with cloud architecture and deployment, especially on Google Cloud Platform (GCP) or Terraform.Ability to work autonomously and manage uncertainties in a dynamic environment.

LaBella Associates is seeking a Software Engineer to join the Power Systems team in Rochester, NY. This position plays a key role in managing the full software development lifecycle for projects that support power systems operations. The work involves maintaining quality standards and applying strong technical skills throughout each stage of development. What you will do Work closely with Product Owners and Operations Managers to develop solutions that address technical requirements. Maintain and support custom internal web applications, ensuring they remain reliable and effective. Participate in the design of new software and computer systems, contributing technical input and ideas. Create schematics or wireframes for software, mentor junior engineers in design methods, and help align projects with customer needs. Stay current with new technologies and tools to improve efficiency and modernize development processes. Encourage and promote coding best practices within the team. Assist with the implementation of Continuous Integration and Continuous Deployment (CI/CD) practices. Take part in planning project scope and contributing to creative project direction. Role overview This role focuses on collaboration, technical problem-solving, and continuous improvement. The Software Engineer will support both new development and ongoing maintenance, working as part of a team committed to quality and innovation in power systems software.

Join a Transformative CompanyAt Palantir, we are pioneers in developing cutting-edge software that revolutionizes data-driven decision-making and operational efficiency. Our innovative platforms empower partners to achieve remarkable feats, such as developing life-saving pharmaceuticals, predicting supply chain disruptions, and assisting in locating missing children.About the RoleApollo represents Palantir’s autonomous software management and deployment solution, ensuring the seamless and continuous delivery of mission-critical software (Foundry, Gotham, AIP) across diverse environments, including on-premises systems, public clouds, air-gapped networks, and highly regulated environments (such as IL-5 and FedRAMP).As a Software Engineer on the Apollo team, you will be instrumental in building and managing a large-scale distributed system that supports the remote operation and maintenance of Kubernetes clusters. Our mission focuses on extracting a cluster's entire state into a portable, high-performance artifact within minutes, allowing for rapid and comprehensive cluster reconstruction—all while pushing the boundaries of speed, reliability, and scalability.You will design and implement sophisticated backup and restoration solutions for Kubernetes, leveraging our proprietary compression technology customized for Palantir’s unique deployment frameworks. Additionally, you will enhance and optimize our container artifact repository, grounded in the OCI (Open Container Initiative) distribution specification—the standard for storing and distributing container images and artifacts. You will be responsible for the foundational infrastructure that supports every environment Apollo caters to, from hyperscale data centers to military vehicles.If you thrive on challenges that sit at the nexus of container technologies, storage solutions, and distributed systems, you’ll find ample opportunities to delve into storage formats and low-level optimizations where milliseconds are crucial. As we enhance automation in cluster creation and management across various hardware platforms, you will play a vital role in expanding Palantir’s edge capabilities and tackling complex distributed system challenges. You will oversee the entire development lifecycle—from ideation and design to implementation and ongoing support—while collaborating closely with both technical and non-technical team members to deliver impactful, robust infrastructure. We actively encourage the use of AI tools (such as Claude Code, Codex, and Copilot) to enhance your productivity!

Your OpportunityJoin our innovative team at LM Studio as a Software Engineer specializing in AI/ML Systems. We seek a dynamic individual who thrives at the crossroads of machine learning and systems engineering, enjoys tackling complex challenges, and is dedicated to crafting exceptional products.In this role, you will be responsible for developing and enhancing on-device inference engines and integrations for local large language models (LLMs) and advanced AI technologies within LM Studio. You will design and maintain the runtime that facilitates on-device model inference, provide immediate support for new models on launch day, and optimize performance across diverse hardware setups.Collaboration is key here. You will engage closely with model authors and upstream open-source communities (such as llama.cpp, MLX, and others) to ensure that LM Studio users access cutting-edge AI experiences.If you're passionate about bridging the gap between models and systems and care about delivering outstanding local AI-powered experiences for both users and developers, this position could be your next great adventure!