Senior Software Engineer I

Thomson Reuters; Ciudad de México; On-site; MXN 1,000,000 - 1,500,000; Full time

Benefits offered by this job

Hybrid work model

Work-life balance

Career development

Mental health days

Volunteer days off

Job summary

Thomson Reuters is seeking a Senior Software Engineer, Customer Files Orchestration, in Mexico City to design, build, and operate a scalable service handling customer documents across AWS and Kubernetes.

You will own the orchestration service, implement queues and autoscaling, ensure reliable file processing, and collaborate with storage, extraction, indexing, and frontend teams to deliver robust file workflows. Strong emphasis on observability and durable fixes.

Qualifications

• Bachelor's or master's degree in Computer Science, Engineering, or related field, or equivalent practical experience.
• At least 3 years of experience building production software and owning significant components within customer-facing systems.
• Extensive experience with Python and AWS in production environments.
• Experience developing and debugging concurrent Python applications, including asyncio-based workflows.
• Understanding of Python concurrency concepts, including the Global Interpreter Lock, event loops, semaphores, worker pools, blocking operations, and background task behavior.
• Experience running Kubernetes workloads in production environments, including event-driven autoscaling with KEDA, scaler tuning, resource requests, and production troubleshooting.
• Experience building large-scale orchestration services or data pipelines that process high volumes of work across multiple service boundaries.
• Practical understanding of eventual consistency, strongly consistent reads, durable state, retries, partial failures, and long-running processing workflows.
• Experience with delivery guarantees, including at-least-once processing, exactly-once considerations, and idempotent processing.
• Hands-on experience with queues, fair queuing, rate limiting, backpressure, multi-tenant fairness, and noisy-neighbor isolation.
• Experience designing and maintaining APIs with versioned contracts, backward compatibility, and clear ownership.
• Demonstrated operational ownership, including on-call support, incident response, root-cause analysis, and implementation of durable fixes.
• Strong engineering fundamentals, including testing, code review, observability, CI/CD, and infrastructure as code.
• Ability to collaborate effectively with cross-functional engineering teams and communicate technical trade-offs clearly.

Responsibilities

• Own the Orchestration Service End-to-End: Design, implement, test, deploy, scale, and operate meaningful components of the customer files orchestration service.
• Design Distributed Systems Solutions: Define and document technical designs, including decisions related to consistency, delivery guarantees, crash recovery, asynchronous service boundaries, and durable state management.
• Build Queuing and Flow-Control Capabilities: Develop fair queuing, rate limiting, backpressure, circuit breaking, dead-letter handling, and autoscaling mechanisms to support high-volume, multi-tenant workloads.
• Develop Reliable File Processing Workflows: Support the orchestration of file upload, storage, extraction, embedding, and indexing workflows across multiple services and processing stages.
• Design APIs as Products: Build and maintain versioned APIs with documented behavior, backward compatibility, clear ownership, and deliberate change management.
• Ensure Correctness at Scale: Anticipate concurrency, load, partial‑failure, retry, and long‑running processing scenarios, and design systems that prevent recurring classes of defects.
• Operate What You Build: Participate in on-call rotations, lead incident response activities, and drive post‑mortem actions that prevent repeated operational issues.
• Improve Observability: Instrument and trace services to enable timely diagnosis of file‑processing workflows, downstream notifications, and customer‑impacting issues.
• Reduce Operational Toil: Automate recurring manual work and convert undocumented operational processes into reliable, repeatable runbooks or system improvements.
• Collaborate Across Engineering Teams: Partner with storage, extraction, indexing, connectors, and front-end teams for integrated file-processing experiences.
• Mentor and Support Engineering Excellence: Contribute through code reviews, design reviews, guidance, and knowledge sharing.
• Communicate Technical Trade-Offs: Explain design decisions, delivery risks, throughput considerations, and cost of correctness to partners.

Skills

Python

AWS

Kubernetes

Asyncio

Distributed systems

API design

On-call ownership

Observability

CI/CD practices

Infrastructure as Code

Education

Bachelor's in Computer Science or related field

Tools

Temporal

Kafka

MSK

AWS Step Functions

SQS

Job description

Job Description

As a Senior Software Engineer, Customer Files Orchestration, you will design, build, scale, and operate the service that makes customer documents usable by CoCounsel Legal agents. You will work on the end-to-end processing of customer files, including upload, storage, extraction, embedding, indexing, and orchestration across distributed systems.

You will focus on developing reliable, scalable, and observable Python services on AWS and Kubernetes. The role requires hands‑on expertise in distributed systems, asynchronous processing, queuing, flow control, consistency models, API design, and operational ownership. You will collaborate with engineering teams responsible for storage, extraction, indexing, connectors, and front‑end experiences to deliver dependable customer file workflows.

Key Responsibilities

• Own the Orchestration Service End-to-End: Design, implement, test, deploy, scale, and operate meaningful components of the customer files orchestration service.
• Design Distributed Systems Solutions: Define and document technical designs, including decisions related to consistency, delivery guarantees, crash recovery, asynchronous service boundaries, and durable state management.
• Build Queuing and Flow‑Control Capabilities: Develop fair queuing, rate limiting, backpressure, circuit breaking, dead‑letter handling, and autoscaling mechanisms to support high‑volume, multi‑tenant workloads.
• Develop Reliable File Processing Workflows: Support the orchestration of file upload, storage, extraction, embedding, and indexing workflows across multiple services and processing stages.
• Design APIs as Products: Build and maintain versioned APIs with documented behavior, backward compatibility, clear ownership, and deliberate change management.
• Ensure Correctness at Scale: Anticipate concurrency, load, partial‑failure, retry, and long‑running processing scenarios, and design systems that prevent recurring classes of defects.
• Operate What You Build: Participate in primary on‑call rotations, lead incident response activities, and drive post‑mortem actions that prevent repeated operational issues.
• Improve Observability: Instrument and trace services to enable timely diagnosis of file‑processing workflows, downstream notifications, and customer‑impacting issues.
• Reduce Operational Toil: Automate recurring manual work and convert undocumented operational processes into reliable, repeatable runbooks or system improvements.
• Collaborate Across Engineering Teams: Partner with storage, extraction, indexing, connectors, and front‑end teams to ensure integrated and effective file‑processing experiences.
• Mentor and Support Engineering Excellence: Contribute through code reviews, design reviews, technical guidance, and knowledge sharing across the team.
• Communicate Technical Trade‑Offs: Clearly explain system design decisions, delivery risks, throughput considerations, and the cost of correctness to engineering and product partners.

Required Qualifications

• Bachelor’s or master’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• At least 3 years of experience building production software and owning significant components within customer‑facing systems.
• Extensive experience with Python and AWS in production environments.
• Experience developing and debugging concurrent Python applications, including asyncio‑based workflows.
• Understanding of Python concurrency concepts, including the Global Interpreter Lock, event loops, semaphores, worker pools, blocking operations, and background task behavior.
• Experience running Kubernetes workloads in production environments, including event‑driven autoscaling with KEDA, scaler tuning, resource requests, and production troubleshooting.
• Experience building large‑scale orchestration services or data pipelines that process high volumes of work across multiple service boundaries.
• Practical understanding of eventual consistency, strongly consistent reads, durable state, retries, partial failures, and long‑running processing workflows.
• Experience with delivery guarantees, including at‑least‑once processing, exactly‑once considerations, and idempotent processing.
• Hands‑on experience with queues, fair queuing, rate limiting, backpressure, multi‑tenant fairness, and noisy‑neighbor isolation.
• Experience designing and maintaining APIs with versioned contracts, backward compatibility, and clear ownership.
• Demonstrated operational ownership, including on‑call support, incident response, root‑cause analysis, and implementation of durable fixes.
• Strong engineering fundamentals, including testing, code review, observability, CI/CD, and infrastructure as code.
• Ability to collaborate effectively with cross‑functional engineering teams and communicate technical trade‑offs clearly.

Preferred Qualifications

• Experience with document processing or document management systems, including extraction, OCR, file format handling, large‑file workflows, and third‑party document management system integrations.
• Experience with event‑driven architectures and streaming technologies, including Kafka, MSK, SQS, or similar managed queueing platforms.
• Experience with durable workflow engines, such as Temporal, AWS Step Functions, or similar technologies.
• Experience supporting retrieval, embedding, or indexing pipelines for LLM or agentic applications.
• Prior exposure to the legal industry.
• Experience working with Team Topologies concepts, including stream‑aligned teams, platform teams, and service ownership boundaries.

#LI‑FZ1

What’s in it For You?

• Hybrid Work Model: We’ve adopted a flexible hybrid working environment for our office‑based roles while delivering a seamless experience that is digitally and physically connected.
• Flexibility & Work‑Life Balance: Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work‑life balance.
• Career Development and Growth: By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow’s challenges and deliver real‑world solutions. Our Grow My Way programming and skills‑first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI‑enabled future.
• Industry Competitive Benefits: We offer comprehensive benefit plans to include flexible vacation, two company‑wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing.
• Culture: Globally recognized, award‑winning reputation for inclusion and belonging, flexibility, work‑life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, and Stronger Together.
• Social Impact: Make an impact in your community with our Social Impact Institute. We offer employees two paid volunteer days off annually and opportunities to get involved with pro‑bono consulting projects and Environmental, Social, and Governance (ESG) initiatives.
• Making a Real‑World Impact: We are one of the few companies globally that helps its customers pursue justice, truth, and transparency. Together, with the professionals and institutions we serve, we help uphold the rule of law, turn the wheels of commerce, catch bad actors, report the facts, and provide trusted, unbiased information to people all over the world.

About Us

Thomson Reuters informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions. We serve professionals across legal, tax, accounting, compliance, government, and media. Our products combine highly specialized software and insights to empower professionals with the data, intelligence, and solutions needed to make informed decisions, and to help institutions in their pursuit of justice, truth, and transparency. Reuters, part of Thomson Reuters, is a world leading provider of trusted journalism and news.

We are powered by the talents of 26,000 employees across more than 70 countries, where everyone has a chance to contribute and grow professionally in flexible work environments. At a time when objectivity, accuracy, fairness, and transparency are under attack, we consider it our duty to pursue them. Sound exciting? Join us and help shape the industries that move society forward.

As a global business, we rely on the unique backgrounds, perspectives, and experiences of all employees to deliver on our business goals. To ensure we can do that, we seek talented, qualified employees in all our operations around the world regardless of race, color, sex/gender, including pregnancy, gender identity and expression, national origin, religion, sexual orientation, disability, age, marital status, citizen status, veteran status, or any other protected classification under applicable law. Thomson Reuters is proud to be an Equal Employment Opportunity Employer providing a drug‑free workplace.

We also make reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs in accordance with applicable law. More information on requesting an accommodation here.

More information about Thomson Reuters can be found on thomsonreuters.com