812243 Software Engineer $235,000.00
$235kB4Corp
Description Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. Develop, implement, and maintain AI/ML-enabled applications with a focus on agent-based workflows, LLM integration, RAG capabilities, and production-ready application functionality. Design and support agent-based application architectures, including orchestration logic, tool use, memory management, context handling, and integration with external tools, data sources, and enterprise systems. Implement and maintain RAG pipelines, including document processing, embedding generation, retrieval configuration, prompt assembly, response optimization, and retrieval-based memory patterns. Develop and maintain REST APIs, Python-based services, backend components, user-facing features, and data workflows to support AI/ML applications, system integration, and enterprise deployment. Process, organize, and model structured and unstructured data; refine Postgres schemas; benchmark model performance using MLflow or similar tools; and optimize applications for performance, reliability, latency, usability, maintainability, and scalability. Details Labor Category: Software Engineer Position Title: AI/ML Engineers Position Level: Level 2 - Expert Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: McLean VA Mandatory Requirements Developmental (0-2 years’ experience) Full Performance (3-5 years’ experience) Senior (6-10 years’ experience) Expert (11-15 years’ experience) SME (16+ years’ experience) Experience developing AI/ML-enabled applications with a focus on LLM integration, agent-based workflows, retrieval-augmented generation (RAG), or similar retrieval-based capabilities. Proficiency with Python, common data/AI libraries, AI frameworks, and tool-based LLM application development, including orchestration logic, tool use, memory/context management, and integration with external systems. Strong understanding of AI/ML foundational concepts, including transformers, algorithms, LLM behavior, data processing, and model integration patterns. Experience designing, developing, or integrating REST APIs, particularly Python-based services, and working with PostgreSQL or other relational databases, including schema design, indexing, and query optimization. Familiarity with production-ready application development practices, including reliability, maintainability, testing, usability, deployment, and performance optimization. Accepting the following levels: Expert: Typically requires a minimum of 12 years of related experience with a Bachelor’s degree; or 10 years and a Master’s degree; or a PhD with a minimum of 8 years of related work experience. Optional Requirements Experience with MCP or similar protocols for connecting AI agents to tools, data sources, and enterprise systems. Experience developing full-stack AI or agent-based applications, including frontend interfaces, backend services, orchestration layers, and enterprise deployment patterns. Experience with Python REST API frameworks such as FastAPI or Flask, Docker containers, containerized development environments, and AWS or other cloud environments. Experience implementing or optimizing LLM memory management, agent orchestration, prompt/tool workflows, latency reduction, context window management, observability, evaluation, and cost/performance tuning. Experience with MLflow or similar tools, vector databases, embedding models, semantic search, retrieval configuration, structured/unstructured data transformation, and Postgres schema refinement. B4CORP Company Information B4Corp is a small defense contracting company that focuses on providing an optimum environment for mission-focused, highly skilled consultants to support the United States of America’s intelligence community and other defense organizations. B4Corp provides a low overhead, highly efficient, high salary environment that allows employees to excel at meeting the client’s needs. B4Corp is looking for information technology professionals that have a high sense of personal responsibility, self-motivation, and mission drive. B4Corp’s dedication and care for its employees is reflected in our outstanding compensation and benefits package. B4Corp’s benefits reflect the company’s policy of putting the employees first. B4Corp’s maximum flexibility comp / makeup time policy, along with the company’s cafeteria-style benefit plan that allows employees to maximize their Benefit Dollars, reflects B4Corp’s commitment to its employees. Compensation Outstanding Salaries Retirement Full Vanguard 401k Plan - Featuring a full scope of investment options - 100% employer matched contribution up to 6% of employee’s salary - Ability to max out 401k savings $57k ($63.5k if over 50) Employees receive B4Corp phantom stock each year (2-year vesting period) Insurance Medical - United Health Care (UHC) (multiple plan options) Dental - United Concordia (UC) Flex Plan Vision - Vision Service Plan Insurance Co (VSP) Signature Plans Mutual of Omaha short-term disability (60% of salary up to $2,000.00/week) Mutual of Omaha long-term disability (60% of salary up to $10,000.00/month) Mutual of Omaha life insurance ($200,000.00) Employee Referral Bonus Refer a friend or a coworker and receive $3,000 per year for every year the person works for B4CORP Paid Time Off (PTO) Seven weeks of leave per year (including ten federal holidays) Flexible work schedule with comp time (with customer approval) B4Corp is an EEO and e-Verify employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation or national origin. #J-18808-Ljbffr B4Corp
$235k
Labor Category: Software Engineer Position Title: Software Engineer Position Level: Level 3 - Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. As a Software...SuggestedTemporary workFlexible hours$235k
Labor Category: Software Engineer Position Title: Software Engineer Position Level: Level 3 - Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. This role...SuggestedTemporary workFlexible hours$235k
...Requires a Top Secret (TS/SCI) Clearance with a Polygraph. Details Labor Category: Software Engineer Position Title: Software Engineer Position Level: Level 3 - Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Primary Responsibilities...SuggestedTemporary workFlexible hours$235k
Labor Category: Software Engineer Position Title: Software Engineer Position Level: Level 3 - Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description: Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. ETL Developer...SuggestedTemporary workFlexible hours$235k
Labor Category: Software Engineer Position Title: Java Developer Position Level: Level 3 - Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description: Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. We are seeking...SuggestedTemporary workFlexible hours$235k
Labor Category: Software Engineer Position Title: DevOps Engineer Position Level: Level 3 - Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. Seeking a DevOps...Temporary workFlexible hours$235k
Labor Category: Systems Engineer Position Title: Cyber Infrastructure Support Position Level: Level 2 - Expert Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph....Temporary workFlexible hours$300k
Labor Category: Software Engineer Position Title: Java Developer Position Level: Level 1 - Subject Matter Expert Salary: Up to $300,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description: Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph...Temporary workFlexible hours$225k
...Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph. Labor Category: Software Engineer Position Title: Software Developer Position Level: Level 2 - Expert Salary: Up to $225,000.00 per year Core Hours: 9am to 4pm Location: Bethesda, MD Seeking a Software...Contract work$225k
Labor Category: Software Engineer Position Title: Elastic Search Systems Engineer Position Level: Level 2 - Expert Salary: Up to $225,000.00 per year Core Hours: 9am to 4pm Location: Bethesda MD Description Position Requires a Top Secret (TS/SCI) Clearance with a Polygraph...Temporary workImmediate startFlexible hours$235k
...Labor Category: Systems Engineer Position Title: Systems Engineer Position Level: Level 3 – Senior Salary: Up to $235,000.00 per year Core Hours: 9am to 4pm Location: Herndon... ...maintenance for hardware and software. Provide engineering support for new...Temporary workFlexible hours$200k
...with a Polygraph. Labor Category: Systems Engineer Position Title: Systems Engineer Position... ...: Level 3 - Senior Salary: Up to $200,000.00 per year Core Hours: 9am to 4pm Location... ...and procedures for managing organization software. Demonstrated experience problem solving...Temporary workFlexible hours$200k
...a Polygraph. Job Title : Java Developer Level : Senior (Level 3) Salary : Up to $200,000 per year Core Hours : 9am to 4pm Location : Bethesda, MD Role Summary Java Software Developer with strong systems, software, cloud, and Agile experience to support complex programs...$159.8k - $164.8k
...company, is seeking a Senior Full-Stack Software Engineer to design, build, and maintain enterprise... ...Hybrid Pay Range $159,800 - $164,800.00 Benefits Regular - The company offers... ...a difference in the lives of our 15,000 Iupiat shareholders, a group of Alaska natives...Full timePart timeFor contractorsRemote work$69.4k - $158k
Software EngineerThe Opportunity:As a back-end developer, you know that a good site or... ...a back-end developer with the software engineering skills it takes to help identify potential... ...range for this position is $69,400.00 to $158,000.00 (annualized USD). The estimate displayed...Full timeContract workPart timeWork at officeLocal areaRemote work$69.4k - $158k
Software EngineerThe Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast... ...projected compensation range for this position is $69,400.00 to $158,000.00 (annualized USD). The estimate displayed represents the typical...Full timeContract workPart timeLocal areaRemote work$143.7k - $194.4k
...team sits at the intersection of software and physical hardware,... ...based automation that keeps 2,000+ Glacier storage units healthy... ...storage hardware.At Amazon, we hire engineers who think big and want to... ...at .USA, VA, Arlington - 143,700.00 - 194,400.00 USD annuallyInternshipWorldwideFlexible hours$86.8k - $198k
Software Signals EngineerThe Opportunity:Leverage specialization in software development for tools, techniques, systems, and procedures... ...projected compensation range for this position is $86,800.00 to $198,000.00 (annualized USD). The estimate displayed represents the...Full timeContract workPart timeLocal areaRemote work$86.8k - $198k
Real-Time Software EngineerThe Opportunity: Are you excited to apply RF theory to critical... ...employees as needed.This is a hands-on engineering role focused on real-time software,... ...compensation range for this position is $86,800.00 to $198,000.00 (annualized USD). The estimate...Full timeContract workPart timeWork at officeLocal areaRemote work$53k - $108k
...Job Number: R0248060 Full Stack Software Engineer, Junior The Opportunity: We are seeking a Junior Full Stack Software Engineer to... ...requirements. The projected compensation range for this position is $53,000.00 to $108,000.00 (annualized USD). The estimate displayed...Full timeContract workPart timeInternshipLocal areaRemote work- ...Government customers to provide a comprehensive set of system/software engineering and information technology services to maintain, sustain,... ...position within the Washington, DC metropolitan area is: $137,000.00 - $182,000.00 - $200,200.00 annually.For all other states,...Full time
$112.8k - $257k
Software Engineer, SeniorThe Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a... ...projected compensation range for this position is $112,800.00 to $257,000.00 (annualized USD). The estimate displayed represents the...Full timeContract workPart timeLocal areaRemote work$140k - $170k
...Junior Software Engineer Location US-VA-McLean ID 2026-8693 Category Information Technology Position... ...Test-driven development. Salary Range USD $140,000.00 - USD $170,000.00 /Yr. The Markon pay range for this position...Full timeTemporary workRemote workFlexible hours$125.12k - $172.04k
...global enterprises. With over 9,000 employees, our capabilities... ...technology solutions through engineering expertise and smart systems integration... .... We are seeking a Software Engineer 4 to join our... ...person. Pay Range USD $125,120.00 - USD $172,040.00 /Yr....Work at officeLocal area$69.4k - $158k
...Job Number: R0251931 Software Engineer The Opportunity: As a back-end developer, you know that a good site or system needs the... ...projected compensation range for this position is $69,400.00 to $158,000.00 (annualized USD). The estimate displayed represents the...Full timeContract workPart timeLocal areaRemote work$69.4k - $158k
...Job Number: R0251775 Software Engineer The Opportunity: As a full stack developer, you can resolve a problem with a complete end... ...projected compensation range for this position is $69,400.00 to $158,000.00 (annualized USD). The estimate displayed represents the...Full timeContract workPart timeLocal areaRemote work$86.8k - $198k
...Job Number: R0250289 Software Engineer The Opportunity: As a full stack developer, you can resolve a problem with a complete end... ...projected compensation range for this position is $86,800.00 to $198,000.00 (annualized USD). The estimate displayed represents the...Full timeContract workPart timeLocal areaRemote work$69.4k - $158k
Software System Safety EngineerThe Opportunity: As a full stack developer, you can resolve... ...clearanceBachelor's degree in CS, EE, Engineering, or Software EngineeringNice If You... ...compensation range for this position is $69,400.00 to $158,000.00 (annualized USD). The estimate...Full timeContract workPart timeLocal areaRemote work$69.4k - $158k
...Job Number: R0237886 Software Development Engineer The Opportunity: We're looking for a Sof t war e Development Engineer to join our... ...projected compensation range for this position is $69,400.00 to $158,000.00 (annualized USD). The estimate displayed represents...Full timeContract workPart timeWork at officeLocal areaRemote work$107.9k - $195.05k
...at Leidos is currently seeking a Senior Software Engineer with 8+ years of professional experience... ...above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for... ...Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual...Local areaImmediate startRemote work
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