PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
2mo
Save
Mark Applied
Hide
Junior Backend Software Developer
Columbia, Maryland, United States
$115k-$160k/yr OnsiteFull Time
3+ YOETop Secret/SCI clearance with polygraph; bachelor's degree; 3 years software development; Java, REST, Spring Boot; MongoDB; automated testing.
Java, Spring Boot, MongoDB, REST, Automated Testing
1mo
Save
Mark Applied
Hide
Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis
OnsiteFull Time
2+ YOERequires US citizenship and active Top Secret/SCI clearance, Bachelor’s in CS/Engineering/GIS or STEM, 2+ years backend experience, Python/Node.js/Java, ArcGIS Enterprise experience, containerization (Docker/Kubernetes), REST API design.
Esri, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Python, JavaScript, Node.js, Java, REST APIs, Docker, Kubernetes, PostgreSQL, PostGIS, SQL Server, Azure, AWS, GCP
1mo
Save
Mark Applied
Hide
Geospatial Backend Developer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis or Sun Prairie
OnsiteFull Time
2+ YOEUS citizen with active/current Top Secret/SCI clearance, Bachelor's in CS/Engineering/GIS/STEM, 2+ years backend development experience using Python/Node.js/Java, ArcGIS Enterprise experience, containerization (Docker/Kubernetes), REST API design, and cloud familiarity.
Esri, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Python, Node.js, Java, Docker, Kubernetes, PostgreSQL, PostGIS, Microsoft SQL Server, Azure, AWS, GCP, REST
2mo
Save
Mark Applied
Hide
Mid-Level Backend Software Engineer
Gaithersburg, Maryland, United States
$87k-$157k/yr OnsiteFull Time
2+ YOEActive Top Secret/SCI clearance with CI poly eligibility; bachelor's or master's in computer science/software engineering; 2–8 years experience depending on degree; strong Java or Python, REST API, SQL, and Linux skills.
Java, Python, SQL, Linux, Apache Airflow, Spring Boot, Django, GitLab, Jenkins, Docker, OpenShift, AWS, Azure
6d
Save
Mark Applied
Hide
Junior Software Developer (Backend Focused)
Annapolis Junction, Maryland, United States
OnsiteFull Time
3+ YOE3+ years software engineering with a technical Bachelor's (or 7+ years experience), strong Java and Spring Boot skills, MongoDB or similar DB experience, and automated testing experience; active TS/SCI with poly required.
Java, Spring Boot, MongoDB, Apache Kafka, Linux, Vue.js
3mo
Save
Mark Applied
Hide
Senior Software Engineer – Backend
Arlington, Virginia, United States
$120k-$206k/yr HybridFull Time
6+ YOE6+ years backend experience with C#, ASP.NET Core, AWS, databases, and distributed systems.
C#, ASP.NET Core, Relational Databases, NoSQL, AWS, EC2, S3, Lambda, RDS, DynamoDB, SQS, SNS, EventBridge, Terraform, CloudFormation, Docker, Kubernetes
1mo
Save
Mark Applied
Hide
Software Development Engineer II- Back End
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend engineering experience; professional experience with Python, Node.js/JavaScript, and Java; experience with ArcGIS Enterprise, containerization (Docker/Kubernetes), API design, and Top Secret/SCI clearance required; Bachelor's in STEM.
Python, Node.js, Java, ArcGIS Enterprise, ArcGIS Enterprise SDKs, Docker, Kubernetes, Azure, AWS, GCP, PostgreSQL, PostGIS, SQL Server
1mo
Save
Mark Applied
Hide
Junior Data Integration Developer
McLean, Virginia, United States
HybridFull Time
1+ YOEBachelor's in CS/SE/IS or related field; 1–2 years backend/API integration; REST APIs; AWS; JS/TS; Docker/Kubernetes; Git/CI/CD.
REST API Development, AWS Cloud Services, JavaScript/TypeScript, React/Angular/Vue.js, Docker & Kubernetes (EKS), AWS Lambda / API Gateway, Data Transformation & Validation, CI/CD Pipelines, Git Version Control
2w
Save
Mark Applied
Hide
Junior Fullstack + AI Developer
Tysons, Virginia, United States
OnsiteFull Time
0+ YOE0–2 years software development experience; familiarity with modern frontend frameworks, backend development (Python/Node.js/Java), REST APIs, relational/NoSQL databases; interest in AI/ML and LLMs; strong communication and problem-solving.
React, Vue, Angular, Python, Node.js, Java, PostgreSQL, MongoDB, PyTorch, TensorFlow, Hugging Face, LangChain, OpenAI APIs, Git, AWS, Azure, Google Cloud, Docker
2w
Save
Mark Applied
Hide
Database Engineer – GSE (Ground Support Engineer)
Sterling, Virginia, United States
$61k-$114k/yr OnsiteFull Time
0+ YOEBachelor's in a technical discipline or equivalent, 0-2 years database engineering experience, strong relational DB experience (PostgreSQL, MySQL, SQL Server), schema design, performance tuning, and backend integration skills.
PostgreSQL, MySQL, SQL Server, Python, C#, Java, JavaScript, PowerShell, ERP, PLM, MES
6d
Save
Mark Applied
Hide
AI/ML Engineer (Systems Engineer, Sr)
Chantilly, Virginia, United States
OnsiteFull Time
1+ YOEU.S. citizen eligible for DoD Secret clearance, 1+ years backend/systems engineering experience, proficiency in Python/C++/Rust, experience with agentic systems, graph data modeling, real‑time pipelines, API design, and secure operations.
Python, C++, Rust, Neo4j, DGraph, ArangoDB, CUDA, REST, GraphQL, gRPC, SOAP, UDP, TCP, Pub/Sub, CI/CD
1mo
Save
Mark Applied
Hide
Forward Deployed Engineer
Boston or New York City or Washington
OnsiteFull Time
2+ YOE2+ years in software/forward deployed engineering; backend language (Python, Go, Java, or similar); experience deploying/integrating software; data handling and REST APIs; customer-facing work; eligible for on-site US work.
1d
Save
Mark Applied
Hide
Software Engineer II
Tysons, Virginia, United States
$88k-$123k/yr HybridFull Time
2+ YOEBachelor's degree or equivalent experience, 2+ years professional software development, strong OOP skills (C# preferred), backend/SQL experience, familiarity with modern JS frameworks and unit testing.
C#, .NET, SQL Server, Kafka, Ember.js, Angular, React, iOS, Android
3d
Save
Mark Applied
Hide
Software Engineer III
Bethesda or Waltham
$112k-$176k/yr HybridFull Time
2+ YOEBackground in backend development with Java and Node.js, experience with Kafka, SQL Server/MongoDB, RESTful APIs, cloud (AWS/GCP), Docker/Kubernetes/ECS, Jira and VS Code; Masters+2yrs or Bachelors+4yrs.
Java, Node.js, NestJS, Kafka, SQL Server, MongoDB, Jira, VS Code, AWS, GCP, Docker, Kubernetes, ECS
2w
Save
Mark Applied
Hide
2440AS - Software Engineer I
Aberdeen, Maryland, United States
$75k-$98k/yr OnsiteFull Time
Techximius: Provides specialized IT and engineering services for defense missions.
1+ YOEBachelors in computer science or similar, 1-5 years software programming experience, proficiency in Java/C/C++/Python/JavaScript, experience with backend/microservices/web development, strong communication and documentation skills, current DoW clearance required.
Java, C/C++, Python, JavaScript, Node.js, Vue.js, Windows, Linux, Android, UML
2mo
Save
Mark Applied
Hide
Associate Software (Full-Stack) Developer
Orlando or Washington
$90k-$115k/yr HybridFull Time
1+ YOEBachelor’s degree in Computer Science, Software Engineering, or related field; 1-5 years of relevant experience; backend in Python; frontend with React; strong Git, Docker; familiarity with Linux and Bash; DoD Secret clearance required (or ability to obtain).
Python, React, Git, Docker, Docker Compose, AWS, Linux, Bash
2mo
Save
Mark Applied
Hide
Jr Data Integration Developer
Silver Spring, Maryland, United States
$90k-$110k/yr HybridFull Time
1+ YOEBachelor's degree; 1–2 years web app and backend microservices; AWS; REST APIs; JavaScript/TypeScript; React/Angular/Vue; Docker/EKS; HTML/CSS; Git and CI/CD.
AWS, API Gateway, S3, DynamoDB, CloudFront, Lambda, Docker, EKS, React, Angular, Vue.js, HTML5, CSS3, Git, CI/CD
3d
Save
Mark Applied
Hide
Full Stack Software Engineer
Arlington or New York
$160k-$210k/yr HybridFull Time
2+ YOE2+ years full-stack experience preferred. Strong React and JavaScript/TypeScript, Spring Boot backend, PostGIS, AWS (S3,Lambda,ECS/EKS), container/Kubernetes, Git, CI/CD, and real-time data handling skills.
React, JavaScript, TypeScript, Spring Boot, PostGIS, AWS, S3, Lambda, ECS/EKS, Kubernetes, Git, WebSockets, SSE, Mapbox, Leaflet, Deck.gl
2w
Save
Mark Applied
Hide
AI Engineer 1 - Compliance, Quality & Testing
Washington, District of Columbia, United States
$80k-$150k/yr OnsiteFull Time
0+ YOEComputer Science degree or equivalent; 0–2 years experience; test automation experience (Playwright, Cypress, Jest, PyTest); hands-on use of AI to generate/review tests; backend experience in Python or TypeScript; familiarity with Palantir Foundry, CI/CD, V&V and NQA-1 concepts.
NOS, Palantir Foundry, Playwright, Cypress, Jest, PyTest, Python, TypeScript
2w
Save
Mark Applied
Hide
Software Engineer – Full Stack (Java, AWS, Angular, AI)
Arlington, Virginia, United States
$116k-$135k/yr HybridFull Time
Experience in Java backend and Angular frontend development, AWS production deployments, microservices and REST API design, familiarity with Docker/Kubernetes, CI/CD, SQL/NoSQL databases, and AI/ML application concepts.
Java, Spring Boot, Spring Cloud, AWS, ECS, EKS, Lambda, S3, RDS, DynamoDB, Azure, Angular, HTML5, CSS3, JavaScript, TypeScript, OpenAI, Azure AI Services, LangChain, vector databases, embeddings, Docker, Kubernetes, CI/CD, Bash, MySQL, MongoDB, Cassandra, Kafka, RabbitMQ, AWS API Gateway, Istio, Terraform, CloudFormation
Explore Jobs