• Strong experience building mobile applications (iOS or Android) in production environments
• Experience with backend services and APIs
• Familiarity with AI-assisted development tools (Claude, ChatGPT, Gemini, etc.)
• Solid understanding of mobile platform internals (permissions, messaging systems, sandboxing, etc.)
• Experience designing scalable architectures and making system-level decisions
• Comfortable working with cloud infrastructure and distributed systems
• Ability to operate with high autonomy and navigate ambiguous requirements
• Strong communication skills and experience working with senior stakeholders

• Experience working on early-stage initiatives
• Experience with consumer-facing products
• Exposure to security-related domains (authentication, fraud detection, phishing, etc.)
• Experience working in fast-paced innovation or experimentation teams

The Security Engineer is responsible for building, maintaining, and improving defensive security measures, tools, and processes that protect systems, applications, and data. This role works closely with the Security, DevOps, and Engineering teams to proactively identify risks, remediate vulnerabilities, and strengthen the overall security posture of the organization.

Key Responsibilities:

- Maintain and enhance intrusion detection and prevention systems (IDS/IPS).
- Support the vulnerability management lifecycle, including scanning, triage, remediation, and reporting.
- Develop and maintain security automation scripts and tooling to improve efficiency and reduce manual work.
- Partner with SOC Analysts during incident response to investigate, contain, and remediate threats.
- Collaborate with DevSecOps engineers to secure CI/CD pipelines, containers, and cloud infrastructure.
- Conduct regular security assessments of infrastructure, applications, and configurations.
- Assist in implementing and maintaining endpoint security controls and monitoring solutions.
- Research emerging threats, attack techniques, and security tools, applying them to strengthen defenses.
- Document security standards, procedures, and response playbooks.

Required Qualifications:

- Experience in security engineering, system administration, or related roles.
- Solid understanding of network security concepts (firewalls, IDS/IPS, proxies, VPNs).
- Experience with vulnerability management tools and processes.
- Strong scripting skills in Python, Bash, or PowerShell for automation and tooling.
- Familiarity with cloud platforms (AWS, Azure, or GCP) and securing cloud-native services.
- Hands-on experience with endpoint security tools and monitoring solutions.
- Strong analytical and problem-solving skills with the ability to think like an attacker.

Preferred Qualifications (Nice-to-Haves): Experience securing containerized workloads (Docker, Kubernetes); knowledge of compliance frameworks (PCI-DSS, SOC 2, NIST, ISO 27001); familiarity with SIEM solutions and log analysis; and experience with Infrastructure as Code (Terraform, CloudFormation).

Join us! 

Arionkoder is a fast-scaling AI consulting firm with a simple but ambitious mission: to create better futures for humanity, one customer, one engagement at a time — with extreme customer centricity.

We solve real business problems through AI-driven solutions, and we measure our success by our clients' success. We push the possible, we're thorough to the last detail, and we earn trust by showing up as genuine partners - not just vendors.

Our customers range from start-ups to global brands, and we're proud of the relationships we build as much as the work we deliver.

You’ll join our growing Growth team at Arionkoder. As an ambitious group, we're on a mission to continue the rapid growth we've seen over the last three years, with clear revenue and satisfaction targets. You'll be part of a dynamic environment where your contributions matter and your ideas are valued.

The Role

A Tribe Lead at Arionkoder is not only an account manager. You are a client advocate inside AK - your job is to help clients succeed in their career, their goals, and their businesses, while making our business grow alongside theirs.

You will own a portfolio of strategic accounts and be responsible for taking them through  AK's relationship system, designed to turn great individual client relationships into a company-owned competitive advantage. From building deep Customer Intelligence Profiles to activating referrals and leading joint business reviews, you will be the person who makes farming permanent and predictable.

This is one of the most strategically important roles in the company. The right candidate thinks like an owner, acts like a partner, and earns trust from clients and internal teams alike. You have client empathy, technical context, and a growth mindset. You thrive with autonomy, move with urgency, and take full accountability for the health and growth of your portfolio.

Responsibilities

• Own a portfolio of strategic Arionkoder accounts and drive their sustained growth, retention, and expansion
• Build and continuously update a Customer Intelligence Profile (CIP) for each account, capturing the intelligence needed to anticipate needs, surface expansion signals, and activate referrals
• Move accounts through our phases: from early relationship stabilization through to full co-ownership - with intentionality and discipline
• Build trusted relationships with key stakeholders, including C-level executives, grounded in genuine partnership and long-term thinking
• Act as the voice of the customer internally - surface their feedback, advocate for their needs, and influence how AK evolves its offerings and delivery
• Work in close alignment with the Account Delivery Manager, who owns delivery -  you own the relationship, together you own the outcome
• Lead Quarterly Business Reviews and strategic planning sessions that reflect real knowledge of the client's business, not just contract status
• Identify and activate referral opportunities from within your portfolio.
• Monitor account health proactively and address risks before they surface as issues
• Use and maintain HubSpot for portfolio management, CIP tracking, and reporting

Who Are You

• You have experience with B2B account management, customer success, or strategic partnerships in technology, AI services, digital product development, or enterprise solutions.
• The three non-negotiables: client empathy, technical context, and a growth mindset
• Technical Knowledge: Intermediate technical knowledge, with the ability to understand and differentiate between technical profiles and the tools and libraries each one typically works with. Up to date with AI trends and able to leverage AI tools to explore and improve processes.
• Experience managing complex client accounts with $2M+ annual spend
• Proven track record of growing accounts organically through trust, consistent value delivery, and strategic thinking
• Comfortable building relationships with executives and technical stakeholders across diverse industries
• You can be autonomous while working on a team - you manage your own portfolio with structure, discipline, and initiative
• Excellent communicator in English
• Analytical and data-driven: you use metrics to prioritize effort, spot expansion signals, and demonstrate impact
• Deeply collaborative - you work hand in hand with the Growth team, ADM and the innovation teams to maximize outcomes for every client
• Resilient, accountable, and energized by owning a portfolio end-to-end

Travel is expected, less than 10% of the time, primarily to the United States, where our customers are based.

Are you passionate about delivering robust and high-quality solutions?

Arionkoder is seeking a Sr. QA Mobile Engineer to ensure the quality and reliability of AI-powered solutions and applications.

Your Impact

● Review and oversee Mobile testing executed by both on and offshore teams

● Enhance the quality of the product by identifying and helping to fix bugs before the product reaches customers

● Continuously improve processes and procedures that enhance efficiency and effectiveness in testing

● Collaborate with development teams to ensure high-quality outputs

● Mitigate risks associated with software development by ensuring that all potential issues are identified and addressed early in the development cycle

● Develop automated test scripts and frameworks for improved mobile app performance for both Android and iOS devices

● Advocate for and implement industry best practices in quality assurance, leading to improved product standards and team processes

● Lead and mentor team members who are earlier in their careers and contribute to the growth and development of the QA team

What you bring to the table

● 5+ years experience in Quality Assurance

● Demonstrated experience with mobile native application testing

● Experience providing QA for mobile, web, and back-end services 

● Expertise in mobile test automation frameworks, using tools such as WebdriverIO and Appium. (Bonus: XCTest and XCUITest for iOS, and Espresso and UI Automator for Android.)

● Ability to empathize with users’ unique perspectives

● Strong experience creating automation scripts from scratch

● Experience using tools (like JIRA, Confluence, and TestRail) to write and execute test cases, log defects, and work with the team on story refinement

● Strong understanding of AGILE software development life cycle (SDLC), quality assurance process, tools, and methodologies

● Capable of writing and executing manual tests for mobile apps

● Display a professional, positive, and approachable attitude, as well as discretion

● Self-starter mentality, excited to assume responsibility for their work, accept direction and feedback from co-workers and managers, and help make anyone’s great idea a reality

● Experience working in Agile and Kanban environments

● Experience working with external clients, partners, and vendors

● Collaborative spirit and a positive demeanor that enhance team dynamics

Bonus points

● Experience in travel and/or loyalty-as-a-service industries

● Experience in Mobile Accessibility (508) testing on both iOS and Android devices

Location: 100% remote from US or Argentina (BsAs, CBA, or Rosario)

Hiring modality: Contractor & USD salary 

Join us ! 

We are looking for a Kotlin Engineer (Buenos Aires based) to join Arion's team!

We are seeking a Senior Software Engineer to anchor the Mobile Service Layer (MSL), the Backend-for-Frontend (BFF) that serves as the orchestration brain for premium travel applications.
This isn’t a traditional CRUD backend role or a pixel-pushing UI position. We seek for an engineer who understands the native mobile lifecycle deeply enough to architect high-performance, mobile-optimized APIs at scale. You will be the technical bridge between native Android and iOS teams and a complex web of travel data partners, ensuring every mobile interaction is fast, reliable, and secure.

If you thrive in a fast-paced, collaborative environment and appreciate leveraging your team's expertise to deliver high-quality solutions, this role might be for you!

What you'll do:

● Architect the Orchestration Layer: Design and maintain scalable, Kotlin-based APIs that aggregate data from multiple enterprise sources into lean, performant payloads purpose-built for mobile consumption, respecting device constraints like battery, bandwidth, and lifecycle state.
● Own the Integration Contract: Define and evolve the formal API contracts and schema governance that decouple upstream mobile release cycles from internal platform iteration, enabling independent team velocity without sacrificing stability.
● Drive System Performance: Proactively identify and resolve bottlenecks across the API and integration tiers, targeting sub-second response times and high availability within a travel ecosystem that demands real-time pricing, availability, and booking confirmation.
● Collaborative Technical Leadership: Engage in high-level architectural discussions and partner with cross-functional teams (iOS, Android, QA, and external partners) to define, design, and ship features that meet enterprise security and compliance standards.


What we're looking for:

● The Hybrid Edge: 7+ years of professional software development experience, including substantial work in server-side Kotlin and deep familiarity with the Android SDK. You understand mobile constraints well enough to build backend services that respect them.
● BFF Pattern Mastery: Proven track record implementing the BFF pattern with RESTful APIs or GraphQL in high-traffic production environments, not toy projects, but systems handling millions of requests with real SLA pressure.
● Architectural Discipline: Comfort operating within established enterprise architectures, navigating complex dependency chains and downstream service tiers, with the judgment to evolve them incrementally without breaking production.
● Modern Stack Proficiency: Deep skill in Kotlin Coroutines and Spring Boot, with the ability to design solutions spanning multiple database systems and asynchronous workflows.
● Agile Execution: You thrive in Agile/Kanban environments and bring the collaborative instincts needed to work alongside external clients, partners, and vendors with competing priorities.
● Ownership Mentality: You don’t wait for tickets. You see systemic issues, propose solutions, and drive them to completion.
● Advanced English level.

We are on the lookout for a strategic and dynamic Product Manager to lead and innovate in managing the full lifecycle of our digital products. This role involves crafting strategic roadmaps, deeply understanding user needs through diligent research, and leading a team of developers and designers. The ideal candidate will be experienced in driving multiple products from conception to launch, adept at iterating based on real user feedback, and skilled at managing cross-functional teams to deliver high-quality products on schedule.

Responsibilities:

• Strategic Leadership: Develop clear, actionable roadmaps that articulate the long-term vision and immediate plans for our products.
• Lifecycle Management: Oversee the entire product lifecycle, from ideation and development through to launch and iterative enhancements based on user feedback.
• Team Management: Lead and manage a squad consisting of developers, project managers and designers, fostering a collaborative and productive environment.
• Data-Driven Management: Define and track success metrics for product initiatives, guiding the team toward achieving key performance indicators and business goals.
• Stakeholder Engagement: Effectively communicate with stakeholders across and outside the organization to secure buy-in and ensure alignment with broader business objectives.

Required Skills and Competencies:

• 5+ years of experience in product management, ideally with some exposure to AI solutions
• Proven Leadership: Demonstrated ability to lead product teams and manage comprehensive product development cycles.
• Discovery & Experimentation: A track record of running lean experiments and working through ambiguity to validate ideas early.
• Strong Analytical Skills: Expertise in setting and evaluating product metrics to ensure that the product delivers on performance and quality.
• Robust Communication: Exceptional communication and negotiation skills, capable of inspiring teams and engaging stakeholders.
• Agile Methodology: Proficient in agile project management, ensuring flexible and efficient product development processes.
• User-Centric Design Understanding: Deep knowledge of user research practices and their application in product design and development.

Preferred Qualifications:

• Industry Experience: Prior experience in product-focused companies, dealing with products at various stages of their lifecycle.
• Technical Proficiency: Familiarity with the latest product development technologies, particularly in AI and responsive design.

We are looking for a Senior Machine Learning Engineer to join our AI Labs dynamic team!

Our team comprises motivated individuals who collaborate to achieve remarkable feats daily. Together, we tackle challenges and emerge victorious, contributing to something monumental! If you thrive in a fast-paced collaborative environment, value and harness your teammates' opinions & expertise to deliver excellence, then come be a part of our team!

What You'll Do:

• Develop and implement fast proof of concept (POCs) focused on LLM automations (prompt engineering, LLM based workflows and/or Agents for processing complex documents with legislation (either digitally native or scanned documentation, including tables, figures, etc).
• Implement solutions with multimodal VLMs (Vision-Language Models, such as GPT4o-vision or Mistral OCR) for OCR and to extract accurate data from tables.
• Ensure quality in your delivery by following strictly CI/CD practices and ensuring proper integration of the features you implement.
• Design prototypes of solutions for challenging business problems, with a focus on scalability and continuous improvement.
• Collaborate with cross-functional teams to gather requirements and ensure solutions meet business needs.
• Test, evaluate, and prompt engineer models to improve accuracy and performance of response systems.
• Provide support for other technical duties, e.g. performing technical interviews for other ML and AI positions or collaborating in high level designs of AI/ML solutions during pre-sales.
• Stay updated with advancements in AI and generative technologies to incorporate best practices into projects.
• Document processes, learnings, and outcomes to support iterative development and knowledge sharing across teams.

What We're Looking For:

• Software engineering degree or similar, with excellent software development skills (please, do not apply unless you consider yourself an above-average engineer with AI skills!)
• Experience implementing LLM workflows (e.g. wizards integrating multiple LLMs prompt-engineered for specific requirements, or applications with multiple LLM based features that take human feedback into account) and/or Agents (autonomous LLM based agents that have multiple tools available and apply one or another based in context) using Langchain and OpenAI models.
• Experience developing and deploying AI/ML solutions in AWS infrastructure.
• Experience developing AI solutions in Python using OpenAI models and building scrappy UIs using Streamlit
• Excellent Prompt Engineering skills.
• Previous experience working with Agile methodologies
• Experience working in multidisciplinary development teams, with multiple roles involved (frontend, backend, PM, QA)
• Master level skills in Python and Git.
• Excellent communication in English, both written and oral.
• Proactivity and creativity

Nice to have:

• Proven experience developing production-ready applications using voice-to-text and text-to-voice interfaces is a plus.
• Experience in traditional NLP (before LLMs)
• Experience using MLOps tools like MLFlow or other platforms for monitoring performance of AI/ML solutions
• Vibe coding experience in tools like v0.dev, generating baseline UIs for POCs.
• Experience in any other fields of machine learning (deep learning, predictive models, recommendation engines, time series analysis, computer vision)
• Experience doing live demos for customers
• Experience implementing good MLOps practices
• If you have implemented some degree of test driven development in your career for AI/ML solutions, let the team know!
• Previous client facing positions

We are seeking a highly skilled and experienced Senior Ruby Engineer to join our team. You will play a pivotal role in shaping and delivering high-quality solutions while mentoring and coaching the development team to achieve technical excellence. If you thrive in a fast-paced, collaborative environment and are passionate about driving innovation in Ruby on Rails development, we encourage you to apply.

WHAT YOU'LL DO

• Implementation of scalable and high-performance solutions using Ruby on Rails, optimizing application performance for various scenarios.
• Develop architectural solutions to facilitate seamless integration of client/third-party services and APIs within our applications.
• Create and maintain comprehensive documentation of the application architecture, ensuring all team members have a clear understanding of design decisions and implementation details.
• Stay updated on the latest industry trends, emerging technologies, and best practices in Ruby on Rails development, incorporating them into our architecture as appropriate to drive continuous improvement.

WHAT WE NEED FROM YOU

• Bachelor's or Master's degree in Computer Science or a related field, or equivalent experience.
• Minimum of 10 years of overall software development experience, with at least 6 years of hands-on experience with Ruby on Rails.
• Strong expertise in Ruby on Rails development, with a focus on writing clean, maintainable code.
• Proficiency in JavaScript, particularly in the frontend development using modern frameworks/libraries such as Reactjs or Vuejs.
• Excellent communication skills in English, both oral and written.
• Familiarity with agile development methodologies and practices.
• Great to have: Experience in coaching and mentoring development teams, guiding them to success.

Sr. Backend Developer 

Are you someone who loves turning bold ideas into reality? Does the thought of experimenting with cutting-edge tech and creating quick Proof of Concepts (POCs) excite you? At Arionkoder, our Innovation Team is searching for a Backend Developer who thrives on pushing boundaries and sharing their journey through impactful communication. If you’re passionate about reshaping what’s possible with technology, we’d love to meet you.

What You’ll Do

• Experiment and Build: Rapidly prototype and iterate on backend solutions, creating POCs to explore new ideas and validate use cases.
• Collaborate Creatively: Partner with frontend developers, ML engineers, and domain experts to design and deliver innovative solutions.
• Integrate Thoughtfully: Integrate AI/ML models into backend systems, optimizing their performance for scalable, real-world applications.
• Optimize and Secure: Build scalable, secure systems using AWS services and adhere to industry best practices.
• Mentor and Lead: Guide team members, sharing your knowledge and fostering a culture of curiosity and experimentation.

What We’re Looking For

• Curiosity and Passion: You’re eager to explore emerging backend technologies and stay ahead of the curve.
• Hands-On Problem-Solver: You’re driven to create, prototype, and refine solutions quickly, learning from successes and failures alike.
• Great Communicator: You excel at making technical ideas accessible, inspiring your team and the broader organization.
• Team-Oriented Mindset: You succeed in multidisciplinary teams and believe innovation is strongest when perspectives combine.
• Technical Expertise:
• Proficiency in Python and FastAPI for backend development.
• Strong experience with AWS services (Lambda, API Gateway, RDS, S3, etc.).
• Familiarity with integrating AI/ML models into backend systems.
• Solid understanding of CI/CD pipelines, RESTful APIs, and GraphQL.

Extra skills that can make you stand out:

• Experience with monitoring and observability tools (e.g., CloudWatch, Datadog).
• Familiarity with conversational AI, natural language processing (NLP), Computer Vision or ML based predictive models is nice to have.
• Knowledge of Docker, containerization, and debugging tools.
• Exposure to event-driven architectures and message queues (e.g., SQS, SNS, Kafka).
• Knowledge of Infrastructure-as-Code tools like Terraform or AWS CDK.
• Understanding of database optimization and performance tuning for both SQL and NoSQL databases.

Why Join Us? 

At Arionkoder, innovation isn’t just a buzzword; it’s our way of working. As a Back-End Developer on our Innovation Team, you’ll have the freedom to experiment with cutting-edge technologies, build Proof of Concepts, and deliver impactful solutions that shape the future. From integrating advanced AI models to solving real-world challenges, you’ll work at the forefront of technology in a team that values creativity, learning, and collaboration.

Ready to build the backbone of tomorrow’s innovations? Apply now!

We are looking for a Rust Engineer to join Arion's team!

Our remote Tech Tribe team is expanding, and we are seeking a skilled Rust Engineer to join us. If you thrive in a fast-paced, collaborative environment and appreciate leveraging your team's expertise to deliver high-quality solutions, this role might be for you!

WHAT WE NEED FROM YOU:

• Excellent oral and written English communication skills.
• Advanced proficiency in the Rust programming language.
• Experience working in Agile environments.
• Backend developers, as Sr as possible with 1 or 2 years of experience in Rust, and ideally have worked with other technologies such as Node, Python.
• AWS and its tools.