Principal Engineer, Search Platform Jobs

Sr. Principal Software Engineer – Search & Recommendation

We are seeking a Sr. Principal Search & Recommendation Engineer to lead the desi...

Location

United States , Seattle

Salary:

277391.00 - 342391.00 USD / Year

Highspot

Expiration Date

Until further notice

Requirements

8+ years of experience building and scaling search or recommendation systems in production environments
Deep expertise in information retrieval, ranking algorithms, collaborative filtering, and/or neural search techniques
Strong programming skills in Python, Java, or Scala
experience with ML and IR frameworks such as Elasticsearch, FAISS, TensorFlow, or PyTorch
Familiarity with LLMs, embeddings, and modern vector search infrastructure
Proven leadership in cross-functional environments with a track record of mentoring and guiding technical teams
Strong grasp of MLOps practices and experience with cloud-native ML infrastructure (e.g., AWS, GCP)

Job Responsibility

Lead the end-to-end development of modern search and recommendation systems, from architecture to production deployment
Drive technical strategy and innovation in search relevance, personalized ranking, semantic search, and ML-powered retrieval/grounding
Collaborate with product, design, and data teams to define and deliver intelligent user experiences
Influence platform-level decisions on data pipelines, experimentation frameworks, and performance optimization
Mentor engineers, foster technical excellence, and promote a culture of learning and innovation

What we offer

Comprehensive medical, dental, vision, disability, and life benefits
Health Savings Account (HSA) with employer contribution
401(k) Matching with immediate vesting on employer match
Flexible PTO
8 paid holidays and 5 paid days for Annual Holiday Week
Quarterly Recharge Fridays (paid days off for mental health recharge)
18 weeks paid parental leave
Access to Coaches and Therapists through Modern Health
2 volunteer days per year
Commuting benefits

Fulltime

Senior Principal Software Engineer

To become a 100 year company, we need a world-class engineering organisation mad...

Location

India , Bengaluru

Salary:

Not provided

Atlassian

Expiration Date

Until further notice

Requirements

15+ years of experience building and developing backend applications - Bachelor's or Master's degree with a preference for Computer Science degree
Experience crafting and implementing highly scalable and performant micro-services
Proficiency in any modern object-oriented programming language (e.g., Java, Kotlin, etc.)
Real passion for collaboration and strong interpersonal and communication skills
Familiarity with cloud architecture patterns and an engineering discipline to produce software with quality
Experience in Elasticsearch, being able to deep dive into performance at scale problems, is a bonus

Job Responsibility

Build and ship JQL Search features and capabilities daily in highly scalable, cross-geo distributed environment
Be responsible technical evolution for products and platforms in JQL Search and partially in Jira Platform
Be part of an amazing open and collaborative work environment with other experienced engineers, architects, product managers, and designers, working closely with JQL Search and collaborating with other Jira Platform or Jira product teams
Mentor and level up the skills of your teammates by sharing your expertise in formal and informal knowledge sharing sessions
Ensure full visibility, error reporting, and monitoring of high performing backend services
Foster a culture of efficient delivery

What we offer

Health coverage
Paid volunteer days
Wellness resources
Visit go.atlassian.com/perksandbenefits to learn more

Fulltime

Principal Software Engineer - Central AI

The Central AI org’s purpose is to accelerate AI innovation across all our produ...

Location

United States , Mountain View; San Francisco; Austin; New York

Salary:

170800.00 - 274300.00 USD / Year

Atlassian

Expiration Date

Until further notice

Requirements

Minimum of 12 years of hands-on experience in software/technology roles, in Enterprise Products & Solutions in the cloud
Proficiency with cloud-native technologies, ideally AWS
At least 2 years of experience architecting and implementing multiple features of a SaaS product at a high scale, performance and reliability of 4 nines
Experience with building and delivering multi-tenant cloud-native SaaS software
Strong understanding of distributed systems, modern cloud-native architectures, and distributed data management
Excellent communication skills and demonstrated success in articulating and pitching technical vision to stakeholders
Ability to balance short- and long-term objectives, focusing on both technical and business outcomes

Job Responsibility

Shape the forward-looking technical direction and long-term architecture for pillars in the Search and Data Ecosystem org
Collaborate with product, engineering, and design leaders to influence the broader department-level strategy
Ensure that the technical strategy you build is aligned with the technical strategy of Atlassian products and platforms
Regularly unblock challenges faced in the software development cycle, from technical design to launch
Lead code reviews and documentation and take on complex bug fixes, especially on high-risk problems
Set the standards for shipping high quality code at high velocity by improving the developer experience
Mentor, hire and develop other engineers

What we offer

health and wellbeing resources
paid volunteer days

Fulltime

Principal AI Engineer

We are looking for a Principal AI Engineer to lead the design and deployment of ...

Location

United States

Salary:

200000.00 - 300000.00 USD / Year

Apollo.io

Expiration Date

Until further notice

Requirements

10+ years of software engineering experience
at least 3 years in applied LLM or agentic AI systems (2023–present)
proven success in deploying LLM-powered products used by real users at scale
deep backend & systems engineering expertise with Python, distributed systems, and scalable APIs
familiarity with LangChain, LlamaIndex, or similar orchestration frameworks
experience with RAG pipelines, vector DBs, embedding models, and semantic search tuning
experience managing performance across cloud providers (e.g., AWS Bedrock, OpenAI, Anthropic, etc.)
demonstrated experience building multi-step agents, planning workflows, chaining reasoning steps, and integrating APIs with agent memory/state
comfort with advanced prompting strategies, few-shot and chain-of-thought reasoning, and embedding retrieval setups
strong understanding of AI system evaluation, human ratings, A/B experimentation, and feedback loop pipelines

Job Responsibility

Architect and lead the development of multi-agent systems capable of long-horizon planning, reasoning, and API orchestration
build reusable agentic components that integrate deeply into sales and marketing processes
own and evolve our in-house platform for scalable, low-latency, and cost-efficient LLM and agent deployments
lead design of interfaces powered by natural language understanding and retrieval-augmented generation (RAG)
build embedding-based, intent-aware search and personalization systems tuned to business user needs
drive innovation in personalized outreach generation using context-aware generation pipelines
tune inference pipelines, caching layers, and model selection logic for high-scale, cost-aware performance
define and drive robust offline and online testing methodologies (A/B, sandboxing, human evals) across agents and LLM flows
architect human-in-the-loop systems and telemetry to improve accuracy, UX, and explainability over time

What we offer

equity
company bonus or sales commissions/bonuses
401(k) plan
at least 10 paid holidays per year
flex PTO
parental leave
employee assistance program
wellbeing benefits
global travel coverage
life/AD&D/STD/LTD insurance

Fulltime

Principal Technical Program Manager - AI and Search Infrastructure

Atlassians can choose where they work – whether in an office, from home, or a co...

Location

United States , San Francisco; Mountain View; Seattle

Salary:

166100.00 - 266800.00 USD / Year

Atlassian

Expiration Date

Until further notice

Requirements

Minimum of 5+ years of experience with deep domain expertise in the areas of Search Infrastructure (i.e. Search Quality, Search Relevance, Vector Search) or Artificial Intelligence (i.e. LLMs, Inference, Fine-tuning, Content Generation)
Minimum 10+ years of experience in Technical Product / Program Management or Technical Leadership role
Experience in 0-1 product / platform development and scaling
Excellent collaborator who can work across teams effectively and represent domain area to senior leadership (VP+ levels)
Experience in gathering product needs, setting strategy & plans, creating clear roadmap with aligned success metrics
Experience driving platform evangelization and adoption internally and with external customers (i.e. Enterprise / SMB)
Experience building platform products for Enterprise is a plus
Master degree or higher education in Computer Science is a plus
Excellent verbal, written, and facilitation skills (including experience with facilitating meetings and engaging with an executive audience)
Demonstrated experience and success leading high-impact, cross-functional programs or products

Job Responsibility

Own the strategic vision for Atlassian platform area (i.e. AI, Search Infra) with focus of driving best outcomes for customers (Atlassians)
Provide technical expertise for Atlassian platform area (AI or Search Infra)
Define product / platform strategy, plans, priorities and roadmap
Partner with engineering team and other disciplines on strategy, plans, roadmaps and execution
Lead communication with senior leadership, customers and stakeholders on regular cadence
Establish key performance indicators (KPIs) and metrics to measure the effectiveness of key initiatives / projects

What we offer

health coverage
paid volunteer days
wellness resources

Fulltime

Principal Data Scientist

The Principal Data Scientist – Media Attribution will lead the development of cu...

Location

United States , Bellevue

Salary:

127400.00 - 229800.00 USD / Year

T-Mobile

Expiration Date

Until further notice

Requirements

Proven experience in marketing and media analytics, with a focus on attribution modeling, causal inference, and media mix optimization
Strong background in machine learning, econometrics, and statistical modeling with applications in marketing measurement
Expertise in Python, R, SQL, and cloud platforms (AWS, GCP, or Azure) for scalable modeling and data processing
Experience with experimental design and incrementality testing in digital and traditional media channels
Ability to communicate complex data science concepts to both technical and non-technical stakeholders, influencing business decisions
Ph.D. or Master’s degree in a quantitative field (e.g., Statistics, Economics, Computer Science, Applied Mathematics)

Job Responsibility

Lead the development and refinement of attribution models (MTA, MMM) to quantify the impact of media investments across channels (digital, social, TV, search, etc.)
Advance causal inference techniques to improve media measurement, including uplift modeling, propensity scoring, and Bayesian methods
Develop forecasting models to predict marketing performance, budget allocation impacts, and long-term customer acquisition trends
Enhance ad testing methodologies, including A/B testing, synthetic control experiments, and incrementality testing, to measure media effectiveness accurately
Collaborate with marketing, finance, and analytics teams to translate model insights into business strategies that drive ROI improvements
Optimize media spend through AI-driven decisioning, leveraging reinforcement learning, Bayesian optimization, and econometric modeling
Stay at the forefront of AI & ML innovations in marketing measurement, driving technical advancements and thought leadership within the team
Work closely with data engineers to scale and automate model deployment, integrating ML solutions into production environments

What we offer

medical, dental and vision insurance
flexible spending account
401(k)
employee stock grants
employee stock purchase plan
paid time off
up to 12 paid holidays
paid parental and family leave
family building benefits
back-up care

Fulltime

New

Villa Travel Sales Consultant

Our client, is a privately owned dynamic travel company who specialise in sellin...

Location

United Kingdom , Central London

Salary:

40000.00 GBP / Year

Antella Travel Recruitment

Expiration Date

Until further notice

Requirements

Previous travel sales experience selling high value luxury holidays is essential
Excellent communication skills, both written and spoken
Be able to work well under pressure and have a flexible approach

Job Responsibility

Creating luxury bespoke villa holidays for clients based on requirements
Arranging all aspects of a client's holiday from travel to accommodation, activities, and any special requests that they may have
Building relationships with clients and suppliers to always ensuring excellent service
Demonstrating outstanding product knowledge to secure bookings

What we offer

Commission ranging from £10,000 to £25,000 per annum
25 days annual leave plus bank holidays
2 annual fam trips to view and stay in the villas and travel discounts
Workplace Pension
Hybrid working
Working abroad policy of 15 days per year

Fulltime

New

Software Engineer Backend Travel

Are you a passionate and skilled backend software engineer looking for an exciti...

Location

United Kingdom , London

Salary:

80000.00 - 90000.00 GBP / Year

Antella Travel Recruitment

Expiration Date

Until further notice

Requirements

Bachelor's degree in Computer Science, Software Engineering, or a related field
3+ years of experience in backend software development
A passion for designing and building fantastic API's, delivering great developer experiences to go with it
An interest in working with Elixir, this is what our client mostly works with
A high bar in code quality and API design
Experience in Travel / Flights, hotels or cars REQUIRED

Job Responsibility

Designing, developing, and maintaining the server-side components of our client's innovative software solutions
Collaborate with cross-functional teams, including frontend developers, designers, and product managers, to create scalable and efficient backend systems that power our client's applications

What we offer

Hybrid work environment (combination of remote and in-office work)
Comprehensive benefits package
Opportunities for professional growth and development
Collaborative and supportive team culture
Chance to work on innovative projects with cutting-edge technologies

Fulltime

Principal Engineer, Search Platform

Atlassian

Location:
India, Bengaluru

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
March 19, 2025

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