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Software Systems Engineer
King of Prussia, Pennsylvania, United States
$73k-$129k/yr OnsiteFull Time
US citizen with final Secret clearance required; experience in systems engineering (requirements/ICD development, subsystem design, or system/software modeling); familiarity with MBSE/Cameo (MagicDraw), DOORs, and DOD software CDRL development; strong communication skills.
Cameo Systems Modeler (MagicDraw), Cameo Enterprise Architecture, DOORs
2mo
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Software Engineer, Build Systems / CI
San Francisco or Seattle or New York City
$185k-$490k/yr OnsiteFull Time
5+ YOE5+ years of software engineering experience; building infrastructure or tooling for developers; experience with build systems (Bazel, Buck, Pants, Gradle); scale CI; cross-team collaboration; strong developer experience; distributed systems debugging.
Bazel, Starlark, Buildkite, Python, FastAPI, Kubernetes, Terraform, PostgreSQL, Kafka
2mo
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Software Engineer - Options Trading Systems
New York, New York, United States
$175k-$250k/yr OnsiteFull Time
5+ YOE5+ years in production software engineering; strong C++, systems fluency, networking; low-latency, high-performance focus.
C++, Networking, Socket programming, Multithreading
1mo
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Senior Software Engineer, Agentic Systems
New York City, New York, United States
$150k-$300k/yr HybridFull Time
5+ YOE5+ years software engineering experience with backend focus; proficiency in Python or TypeScript; experience with APIs, data stores, distributed systems, cloud infrastructure, and agentic AI systems.
Python, TypeScript, FastAPI, Flask, Redis, Kafka, SQL, NoSQL, vector databases, Azure, AWS, GCP
3w
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Software Engineer - Systems
New York City or San Francisco or London
$200k-$275k/yr OnsiteFull Time
5+ YOE5+ years systems programming experience, strong OS foundation, performance engineering, familiarity with Apache Arrow/Parquet/DataFusion/Clickhouse/DuckDB, PyTorch/CUDA understanding, Rust a bonus; able to work onsite in NYC, SF, or London.
Vortex, Apache Arrow, Parquet, DataFusion, Clickhouse, DuckDB, PyTorch, CUDA, Rust
3mo
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Systems Engineer
Aberdeen Proving Ground or Fort Belvoir or Huntsville or Austin or Tobyhanna Army Depot or Letterkenny Army Depot or Lakehurst
OnsiteFull Time
5+ YOE5+ years of systems engineering; strong ability to design, integrate and test complex hardware/software systems; gather requirements and document configurations.
1mo
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Staff HPC Systems Software Engineer
New York City or United States
$225k-$275k/yr OnsiteFull Time
Extensive experience designing and building Slurm-based HPC systems, strong software skills in Go or Python, deep knowledge of GPU infrastructure and HPC networking (InfiniBand, RoCE, RDMA), and experience integrating HPC with cloud-native platforms.
Slurm, Kubernetes, Go, Python, Kueue, InfiniBand, RoCE, RDMA
1mo
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Software Engineer, Geospatial Systems
Brooklyn, New York, United States
$150k-$220k/yr HybridFull Time
4+ YOE4+ years building data-intensive software; strong CS fundamentals; fluency in a systems/backend language; experience with DuckDB/Apache Arrow or comparable columnar systems; emphasis on performance, correctness, and computational geometry.
DuckDB, Apache Arrow, GeoArrow, Clay, Rust, C, C++, Zig, PostGIS, GDAL, GEOS, georust/geo, zarr, GeoZarr
4d
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Senior Software Engineer - Backend & Systems
New York City, New York, United States
$180k/yr OnsiteFull Time
3+ YOE3+ years backend engineering experience; expertise in Rust/Scala/Python/TypeScript, Postgres, distributed systems, Kubernetes, Terraform, observability, and strong system design and testing practices.
Rust, Scala, Python, TypeScript, SQL, Postgres, Postgres RDS, Terraform, Kubernetes, AWS, Nix, Nixpkgs, Tokio, Axum, SQLx, Flink, Kafka, Pandas, NumPy, SciPy, Node.js, REST, gRPC
11h
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Senior Software Engineer, Distributed Data Systems
New York City, New York, United States
$200k-$350k/yr OnsiteFull Time
4+ YOE4+ years data/backend/platform engineering; proficiency in Haskell or TypeScript; experience with distributed and big-data systems, query optimization and OLAP lakehouse architectures.
Haskell, TypeScript, Apache Spark, Hadoop
1mo
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Software Engineer, Trading Systems (C++)
New York City, New York, United States
$120k-$285k/yr HybridFull Time
Degree in CS/Engineering/Math/Physics, strong algorithms/data-structures and distributed systems foundation, excellent C++ (Python preferred), experience building low-latency/high-performance systems, interest in financial markets.
C++, Python, Rust, Linux, FPGA
2w
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Software Engineer, Recommendation Systems
New York, New York, United States
$271k-$347k/yr OnsiteFull Time
12+ YOEBachelor's in CS or equivalent,12+ years building production recommendation/ranking systems,experience defining architecture for large-scale ML,leading cross-organizational initiatives,and deploying ML models to production.
PyTorch, TensorFlow
1w
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Software Engineer - Control Systems
Princeton, New Jersey, United States
$150k-$235k/yr OnsiteFull Time
Hands-on instrumentation and software fundamentals; hardware-in-the-loop testing, data pipelines, distributed monitoring; experience integrating high-speed cameras, RF signal generators, GPUs, and Linux kernel customizations.
high-speed cameras, RF signal generators, GPUs, Linux kernel
1mo
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Software Engineer, Revenue Systems
New York City, New York, United States
OnsiteFull Time
Senior IC with strong systems integration and data modeling; revenue-domain experience; Python/TypeScript production work; correctness-focused.
Python, TypeScript, HubSpot API, REST APIs, Webhooks, SQL
4d
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Software Engineer, Developer Infrastructure - Build Systems
New York City or Los Angeles or Austin or Seattle
$130k-$230k/yr OnsiteFull Time
4+ YOE4+ years building and maintaining build systems, experience with Bazel and large monorepos, improving CI/CD performance and release reliability, strong engineering judgment.
Bazel, Datadog, Grafana, OpenTelemetry, Kubernetes
2d
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Software Engineer, Agent Systems
New York City or London or Zurich or Palo Alto or Copenhagen or Seoul
$150k-$265k/yr HybridFull Time
4+ YOE4+ years backend/distributed systems experience, strong API and data-modeling skills, Kubernetes and container experience, familiarity with Postgres or Redis, reliability and observability experience.
Kubernetes, Postgres, Redis
1mo
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Software Engineer, Design Systems
San Francisco or New York City
$160k-$270k/yr OnsiteFull Time
3+ YOE3+ years building frontend products, ownership of design systems, deep frontend expertise (TypeScript, component architecture, frontend tooling), strong product/design instincts, and collaboration skills; experience with AI-assisted development preferred.
TypeScript, React, Storybook, visx, D3, Chart.js
1mo
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Principal Software Engineer: Distributed Systems (Config, Test, & Deployment)
Austin or New York City or San Francisco or Washington
$200k-$288k/yr HybridFull Time
10+ YOE10+ years software engineering experience, technical leadership across orgs, expertise in distributed systems, strong typed language mastery, API design, experience with LLMs, Kubernetes, RocksDB and large-scale systems.
Kubernetes, RocksDB, LLMs, Prodspec and Annealing
1w
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Software Development Engineer/Senior Software Development Engineer, Agentic Systems, AI for Drug Discovery
South San Francisco or New York City
$115k-$265k/yr HybridFull Time
3+ YOEBachelor's/Master's in CS or related, 3+ years (Software Engineer) or 5+ years (Senior) software engineering experience, proficiency in Python, cloud production software, API design, testing, and system design.
Python, React, Model Context Protocol, CI/CD
2mo
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Staff Systems Engineer
Aurora or Ypsilanti or Philadelphia
$82k-$172k/yr OnsiteFull Time
5+ YOETS/SCI with poly; Bachelor's in CS, systems engineering, IT, or related field; 5+ years in software or systems engineering; strong cross-organizational communication; ability to develop requirements, test procedures, and traceability; experience with Scrum/Agile; IAT Level II or III certification.
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