Sigma Software Group

Backend Engineer

• Design and implement core Back-End services for real-time bidding, optimization, and ad delivery workflows
• Build custom bidding agents for real-time bid decisioning
• Develop high-load, low-latency components supporting real-time auction and delivery mechanics
• Implement proprietary pacing, bid-shading, and optimization logic to improve campaign efficiency
• Design and integrate forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning
• Work with OpenRTB, JSON, protobuf, and other ad-tech protocols and data formats
• Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities

Lead Go Developer, AdTech

AI Engineer

• Design and develop scalable AI-powered backend systems for SysML-based engineering environments
• Build and maintain distributed data ingestion and ETL pipelines for large-scale engineering artifacts and technical documentation
• Develop and optimize LLM-powered workflows for metadata extraction, semantic analysis, and entity resolution
• Implement AI agents and multi-agent orchestration workflows
• Design and improve RAG-based architectures and semantic retrieval pipelines
• Develop graph-based knowledge representation and traceability analysis solutions
• Work with graph databases, graph processing libraries, and semantic relationship modeling
• Build and optimize distributed data processing workflows using Apache Spark
• Collaborate with cross-functional engineering teams to integrate AI capabilities into platform services
• Design scalable and high-performance APIs and backend services
• Improve system reliability, scalability, observability, and performance across distributed environments
• Participate in architecture discussions and technical decision-making processes
• Contribute to cloud-native infrastructure and deployment workflows
• Support deployments in secure, air-gapped, or classified environments when required
• Create and maintain technical documentation and engineering best practices

Senior AI Engineer

Project Manager

• Develop detailed project plans in collaboration with engineering leadership, including resource allocation and budget planning
• Coordinate, track, and deliver technical projects spanning multiple teams (engineering, product, threat intelligence, detection, customer success)
• Facilitate all Scrum ceremonies and Agile events to maintain team productivity and cohesion
• Ensure projects are delivered according to scope, schedule, budget, and quality standards
• Plan, manage, and monitor project execution; ensure on-time delivery within allocated budgets
• Conduct project risk analysis, proactively track and communicate risks to stakeholders and customers
• Create and maintain transparent, easy-to-read project documentation and reports
• Establish and continuously improve project management best practices, including tools, templates, and rules of engagement
• Drive change and efficiency in collaboration with internal and external partners
• Be a resource and people manager: participate in hiring planning with Recruiting, support onboarding, and ensure professional growth of team members
• Drive continuous improvements within the Competence Center, contribute to PMO activities and PM training initiatives, and share lessons learned and best practices to enhance project lifecycle efficiency
• Contribute to project lifecycle improvement through lessons learned and best-practice sharing

Project Manager – AdTech

• Design and implement core components of the audience segmentation platform
• Develop and evolve a flexible segment definition language supporting complex targeting scenarios
• Build scalable evaluation engines for processing large-scale entity and relationship data
• Implement relationship-based audience resolution across multiple entity types
• Optimize incremental recomputation for continuous data changes
• Create event-driven pipelines for real-time segment accuracy
• Ensure governance, auditability, and lifecycle traceability of segments
• Design low-latency resolution services for high-scale operations
• Develop caching strategies for dynamic segments and snapshots
• Optimize system performance, scalability, and operational efficiency
• Collaborate with product and engineering teams to define platform capabilities and architecture
• Provide technical leadership and contribute to architectural decisions

Senior Java Engineer – Segmentation, Audience Platform

• Design and evolve the platform access architecture for a large-scale distributed ecosystem
• Build and maintain a unified API layer over multiple distributed services
• Implement fine-grained ABAC authorization at scale, supporting complex hierarchies and relationships
• Develop fail-closed security architectures with strict enforcement guarantees
• Manage regional compliance, data residency, and routing requirements
• Ensure consistent data visibility rules across all products and services
• Design high-performance authorization evaluation systems and policy engines
• Maintain auditability, traceability, and security transparency mechanisms
• Collaborate with platform and product teams on API and access design
• Contribute to architectural decisions and security standards

Senior Java Developer, Security Platform

Data Engineer

• Design and evolve the platform’s canonical data model
• Architect and implement scalable data ingestion and synchronization frameworks
• Build reliable, replayable, and highly scalable data processing pipelines
• Design entity resolution and identity management capabilities
• Define and implement data governance, lineage, and provenance standards
• Drive architectural decisions related to scalability, resiliency, security, and operability
• Collaborate with product and engineering teams to define platform capabilities and roadmap
• Design APIs and delivery mechanisms for downstream consumers
• Support customer migrations from legacy systems into the new platform
• Mentor engineers and contribute to technical leadership across the team
• Ensure platform reliability, performance, and operational excellence

Software Developer, Data Engineer

Machine Learning Engineer

• Lead the design and implementation of scalable AI-powered solutions across the product ecosystem
• Automate manual workflows using AI-driven approaches, ensuring measurable efficiency gains
• Architect and build semantic data models to support diverse AI use cases
• Develop agent-based architectures for intelligent task automation
• Build and maintain custom AI skills and capabilities tailored to product needs
• Apply spec-driven development practices to ensure consistency and maintainability of AI features
• Define and enforce best practices for AI integration and scalability
• Collaborate closely with product and engineering leadership on AI strategy, roadmap, and execution
• Evaluate emerging AI technologies and recommend adoption strategies

Senior / Principal AI / ML Engineer, Product AI Enablement

Security Analyst

• Investigate advanced and persistent attacks using data analysis and data science tools
• Analyze customers' web traffic to detect unidentified threats and reduce false positives using Elasticsearch and BigQuery
• Research, design, and continuously enhance detection mechanisms to stay ahead of evolving threats
• Provide real-time technical support to global customers, delivering professional and timely incident responses
• Produce clear, insightful incident reports
• Collaborate cross-functionally with R&D and Research teams to optimize the company's detection and mitigation capabilities
• Design, plan, and implement internal automation projects to improve team efficiency
• Work in a shift-based schedule, including weekends

Cyber Security Analyst

Crypto

• Own the business end to end: strategy, product direction, go-to-market, team, and results
• Turn existing traction into repeatable, scalable growth on new markets & clients
• Build and lead a strong team with clear ownership and decision-making
• Leverage Sigma Software Group’s ecosystem to the fullest – technical teams, product/design, security/DevOps, legal, finance, partners, and client network
• Be accountable for key business outcomes and performance
• Represent the company with credible storytelling, strong PR presence, and relationship-building with customers, partners, and investors

CEO – B2B FinTech, Crypto Payments Infrastructure

• Design and develop backend components within a secure DSC environment.
• Implement APIs for seamless interaction with other system components.
• Develop business logic, state models, event processing, and logging mechanisms.
• Work with MS SQL Server, optimize queries, and ensure data integrity.
• Integrate with related systems and services.
• Participate in technical design, task estimation, and code reviews.
• Troubleshoot and fix defects identified during testing, security audits, and acceptance phases.

Senior Golang Backend Engineer – MilTech Solutions

• Lead the estimation process, defining project scope, timelines, and resource requirements for creative, graphic design, and web development projects (WordPress, WebFlow, etc.)
• Develop detailed project plans and schedules, ensuring all phases are accounted for — from concept to delivery
• Monitor project progress, ensuring tasks are completed on time and within budget
• Track team effort, project hours, and deliverables to ensure efficient use of resources and adherence to timelines
• Provide regular project status updates to stakeholders and management
• Coordinate with cross-functional teams, including designers, developers, and marketing specialists, ensuring smooth collaboration
• Ensure all team members are aligned with project goals, timelines, and deliverables
• Lead and motivate the project team, providing guidance and support to ensure high performance
• Foster a positive work environment where team members can collaborate, solve problems, and grow professionally
• Ensure optimal utilization of team members by assigning tasks based on skills, availability, and project needs
• Identify potential project risks early on, assess their impact, and develop mitigation strategies to minimize risks
• Ensure projects are executed efficiently and delivered within the agreed scope, budget, and timelines
• Work closely with clients to understand their business needs and goals
• Collaborate with internal teams to recommend optimal solutions that align with client objectives and add value to their business

Project Manager – Design, Web Solutions

B2B FinTech, Crypto Payments Infrastructure

• Act as a key technical liaison between business and engineering teams, translating commercial goals into actionable technical solutions
• Evaluate publisher technical environments and design scalable, maintainable architectures
• Prepare client-ready solution proposals, including features, integrations, and tools
• Lead cross-functional delivery teams, including developers, designers, DevOps, and technical PMs
• Provide architectural oversight throughout the development lifecycle to ensure continuity and quality
• Manage distributed teams across multiple time zones
• Mentor engineers, conduct code reviews, and guide technical growth
• Make architectural decisions at component and plugin levels, balancing trade-offs and communicating choices clearly

Principal Engineer – Vue.js, Node.js

• Design and implement core backend services for real-time bidding, optimization, and ad delivery workflows
• Build custom bidding agents for real-time bid decisioning
• Develop high-load, low-latency components supporting real-time auction and delivery mechanics
• Implement proprietary pacing, bid-shading, and optimization logic to improve campaign efficiency
• Design and integrate forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning
• Work with OpenRTB, JSON, protobuf, and other ad-tech protocols and data formats
• Integrate with data and metrics pipelines to support real-time optimization and reporting
• Implement observability, monitoring, and troubleshooting capabilities (LGTM/ELK stack)
• Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities

Lead Go Developer, AdTech

Senior AI Engineer

Project Manager – AdTech

Senior Java Engineer – Segmentation, Audience Platform

Senior Java Developer, Security Platform

Software Developer, Data Engineer

Senior / Principal AI / ML Engineer, Product AI Enablement

Cyber Security Analyst

Cyber Security Analyst

CEO – B2B FinTech, Crypto Payments Infrastructure

Senior Golang Backend Engineer – MilTech Solutions

Project Manager – Design, Web Solutions

B2B FinTech, Crypto Payments Infrastructure

Principal Engineer – Vue.js, Node.js

Principal/Senior Backend Engineer