Document Controller (m/w/d)

Langdock

HELP US CHANGE THE WAY THE WORLD WORKS BUILD SOMETHING THAT MATTERS. Langdock exists to change the way the world works, bridging the gap between what technology can do and what people actually do with it. We bring all leading AI models into one secure, model-agnostic platform and make them usable across entire organizations. Over 6,000 companies use our platform every day, from fast-growing startups to some of Europe's largest enterprises. Their employees open Langdock to draft strategies, analyze documents, or automate workflows - helping them to work smarter, think more creatively, and reach their full potential. THE ROLE Platform Engineers at Langdock work on shared backend systems that many product features depend on. This includes the AI engine, queues, document processing, integrations, code execution, authentication, and billing. The job is to make these systems reliable and understandable enough that other engineers can build on them. That means designing clear APIs, choosing the right data models, handling failure cases, writing tests for important invariants, adding useful observability, and keeping abstractions simple enough to maintain. Typical problems include deciding which parts of a long conversation to keep in context, retrying background jobs without running the same side effect twice, handling model-provider failures during streaming responses, refreshing integration tokens before they expire, and enforcing tenant boundaries in shared services. WHAT YOU WILL WORK ON Examples of the kind of systems Platform Engineers own: * The AI engine at the core of the platform. It handles the prompts users send through Langdock and abstracts over providers such as OpenAI, Anthropic, Google, Azure, Bedrock, Mistral, and open-source models. The work includes prompt caching, routing, failover across model deployments, and normalizing provider-specific behavior behind a stable internal interface. * The workflow runtime. Workflows need to execute reliably across agent steps, conditions, loops, structured-output extraction, human-in-the-loop pauses, and actions across hundreds of integrations. The platform work is about making that execution model predictable, observable, and safe to extend. * Context-window optimization. Long conversations, uploaded files, and tool calls need to stay correct while model costs stay under control. This is one of the most cost-sensitive parts of the platform. * A code execution service for running untrusted customer code. Today this means JavaScript in some places, but the direction includes broader execution environments such as Bash. The hard part is clear isolation: secrets, filesystem access, outbound network access, and tenant boundaries need to be controlled explicitly. * A flexible integration layer for connecting Langdock to external services. Most integrations are standard REST APIs, but the platform also needs to support industry standards for tools and agents, including Model Context Protocol (MCP) and agent-to-agent (A2A) communication. You will pick up a platform area over time and can shape where it goes next. TECH STACK * TypeScript across a Turborepo monorepo * Next.js, React, and Tailwind on the front end * Node.js services and workers on the back end * PostgreSQL with Prisma; Redis with BullMQ * A multi-provider model abstraction across OpenAI, Anthropic, Google, Azure, Bedrock, Mistral, and open-source models * Sandboxed Node.js for code execution * Multi-cloud storage abstraction over AWS S3, Azure File Share, and GCS * Terraform for infrastructure orchestration * Kubernetes for workloads that need portable deployment across cloud providers * Linear for ticket management * Datadog and Sentry for observability You should be familiar with most of this. We trust you to pick up the rest quickly. HOW WE SHIP * Small temporary squads of 2 to 3 engineers around a topic. Squads form, ship, and dissolve. * Every change is linked to a Linear ticket and ships via PR. CI runs lint, tests, and AI review. * We deploy continuously to production. * We use AI tools heavily in engineering. You have freedom in the tools to use (eg. Cursor, Claude, Codex). We are building a strong harness that allows engineers to move fast while shipping high quality software. * We are building a strong operating system around AI-assisted shipping: clear ticket context, focused branches, AI review before human review, explicit rollout notes for risky changes, and production verification after release. * The engineer who ships a change owns it in production. If something breaks, you lead the fix. WHAT WE ARE LOOKING FOR * 3 to 6 years of experience building back-end systems that handle real load: queues, caches, databases, streaming pipelines, distributed schedulers. You can talk through failure modes and tradeoffs from systems you have actually run. * Strong in TypeScript and Node. Opinionated about API design, abstractions, and where boundaries should sit. * Some infrastructure experience: Terraform, Kubernetes, cloud deployments, networking, or operating services across AWS, Azure, or GCP. * Very driven. You have high standards for yourself, move fast without needing to be pushed, and want to do the best work of your career. * Working knowledge of the LLM ecosystem at a technical level: context windows, tool calling, streaming protocols, provider quirks, prompt caching. * Habit of adding metrics, traces, and structured logs because you have been on call before and know you will need them. * Security-first mindset. Multi-tenant data isolation is a design constraint, not a postscript. * Heavy user of AI tooling in your own development workflow, with opinions on what works and what does not. We are looking for people who are already compounding their output with AI. WORKING HERE We work from one office in Berlin, Greifswalder Str. 212. Engineering is fully in person; we believe the hardest problems get solved faster at a whiteboard than in a Slack thread. Most engineers start around 8:30. Lunch and dinner are together when people stay. Running and gym are part of the routine for many of us. COMPENSATION Top of market, transparent levels, all roles include equity. Levels are tied to scope, not negotiation or years of experience. We narrow down the range early in the process. NEXT STEPS If this sounds like your kind of work, we would like to meet you. We move fast. Most processes complete within two weeks.

Alten

We’re ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life-saving medical devices to building autonomous electric vehicles. With 3,000+ experts across North America, we partner with leading companies in aerospace, medical devices, robotics, automotive, commercial vehicles, EVs, rail, and more. As part of the global ALTEN Group—57,000+ engineers in 30 countries—we deliver across the entire product development cycle, from consulting to full project outsourcing. When you join ALTEN Technology USA, you’ll collaborate on some of the world’s toughest engineering challenges, supported by mentorship, career growth opportunities, and comprehensive benefits. We take pride in fostering a culture where employees feel valued, supported, and inspired to grow. Summary The Principal Electronics Engineer will be responsible for the research, analysis, design, development, testing, debugging and modification of electronics equipment such as VFMDs (Variable Frequency Motor Drives) for vacuum generators and air compressors (ACIM/BLDC), AC/DC Power Converters (3-Φ), 28V DC Valve Controllers, and W&W System Controllers for the commercial aerospace industry. The Principal Electronics Engineer will take ownership and/or support technical engineering teams and projects related to W&W System Components. Using sound engineering principles, this engineer will interface with cross-functional groups (internal and external) to ensure robust, airworthy designs are attained which meet budget, schedule and internal requirements and goals. This leadership position will be responsible for participating in and leading improvement activities at a group and/or company level. Essential Duties and Responsibilities * Analyze customer requirements and validate them by analysis/modeling/prototyping or based on previous product performance * Create and maintain hardware requirements specification and hardware interface control documents * Performs SPICE analysis of circuits using Altium/OrCAD PSPICE  tools * Performs analysis and MATLAB/Simulink modeling to generate control algorithms * Analyze and designs magnetics for EMI filter, boost/buck inductors and other input/output filters * Performs component selection & obsolescence management * Performs circuit design and schematic capture using Altium/OrCAD tools * Creates hardware design document that covers design analysis, notes, and specific guidelines followed * Provides inputs to PCB layout design * Performs worst case load analysis (DC Load Analysis) on the circuit designs * Performs component derating and thermal analysis * Performance design performance margin analysis * Performs PCB board bring-up per the circuit design * Creates PCB board level functional test procedures per circuit functional blocks * Creates design verification test procedure (DVTP) document * Performs electronics hardware testing to make sure that requirements are met and generate test reports (DVTR) * Independently finds or creates solutions to problems requiring research, resourcefulness and creativity * Understands, follows, and promotes, ZWWS policies and procedures * Review and process engineering changes in the development of water and waste systems and equipment * Review, process and recommend engineering changes in the development of W&W equipment * Utilizes sound technical problem solving to own or support ongoing and new products * Follows sound engineering principles to ensure designs meet airworthiness standards, customer requirements and ZWWS internal standards * Perform research and/or testing for new development * Present technical findings and trade studies * Assesses and creates standard work and leads or support improvement projects (group or company level) * Independently owns, or leads a team for small/medium size projects.  * Able to review, check and approve work done by peers and lower level engineers. * Provides guidance and training to lower level engineers. * Understands how various groups (engineering, industrialization, operations) work together and able to navigate through the company. * Able to interface with existing suppliers and OEM customers * May Interface with new suppliers and OEM customers * Approve, review, and process any engineering changes and data produced in functional group * Utilizes sound technical problem solving to lead ongoing and new projects * Perform research and/or testing for new development * Present technical findings and trade studies * Follows sound engineering principles to ensure designs meet airworthiness standards, customer requirements and ZWWS internal standards * Provides mentoring, guidance and training to lower level engineers * Assesses and creates standard work and leads or support improvement projects (group or company level) * Interfaces with various groups (internal and external) to support new business and bring projects to completion   Salary Range: $140,000-$160,000/K The actual salary offered is dependent on various factors including, but not limited to, location, the candidate’s combination of job-related knowledge, qualifications, skills, education, training, and experience  All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, age, genetic information, or pregnancy. Please beware of job seeker scams and see this important notice on our careers page for more information about our recruiting process. Compliance Notice: Alten USA is a federal contractor subject to the requirements of the Vietnam Era Veterans’ Readjustment Assistance Act (VEVRAA) and Executive Order 11246. We are an Equal Opportunity Employer and consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status. Drug Screening Requirement: As a federal contractor, Alten USA maintains a drug-free workplace. All candidates selected for employment will be required to successfully complete a pre-employment drug screening as a condition of hire.

Alten

We’re ALTEN Technology USA, an engineering company helping clients bring groundbreaking ideas to life—from advancing space exploration and life-saving medical devices to building autonomous electric vehicles. With 3,000+ experts across North America, we partner with leading companies in aerospace, medical devices, robotics, automotive, commercial vehicles, EVs, rail, and more. As part of the global ALTEN Group—57,000+ engineers in 30 countries—we deliver across the entire product development cycle, from consulting to full project outsourcing. When you join ALTEN Technology USA, you’ll collaborate on some of the world’s toughest engineering challenges, supported by mentorship, career growth opportunities, and comprehensive benefits. We take pride in fostering a culture where employees feel valued, supported, and inspired to grow. Summary The Sr. Electronics Engineer will be responsible for the research, analysis, design, development, testing, debugging and modification of electronics equipment such as VFMDs (Variable Frequency Motor Drives) for vacuum generators and air compressors (ACIM/BLDC), AC/DC Power Converters (3-Φ), 28V DC Valve Controllers, and W&W System Controllers for the commercial aerospace industry. The Sr. Electronics Engineer will take ownership and/or support technical engineering teams and projects related to W&W System Components. Using sound engineering principles, this engineer will interface with cross-functional groups (internal and external) to ensure robust, airworthy designs are attained, which meet budget, schedule, and internal requirements and goals. This leadership position will be responsible for participating in and leading improvement activities at a group and/or company level. Essential Duties and Responsibilities * Analyze customer requirements and validate them by analysis/modeling/prototyping or based on previous product performance * Create and maintain hardware requirements specification and hardware interface control documents * Performs SPICE analysis of circuits using Altium/OrCAD PSPICE  tools * Performs analysis and MATLAB/Simulink modeling to generate control algorithms * Analyze and designs magnetics for EMI filter, boost/buck inductors and other input/output filters * Performs component selection & obsolescence management * Performs circuit design and schematic capture using Altium/OrCAD tools * Creates hardware design document that covers design analysis, notes, and specific guidelines followed * Provides inputs to PCB layout design * Performs worst case load analysis (DC Load Analysis) on the circuit designs * Performs component derating and thermal analysis * Performance design performance margin analysis * Performs PCB board bring-up per the circuit design * Creates PCB board level functional test procedures per circuit functional blocks * Creates design verification test procedure (DVTP) document * Performs electronics hardware testing to make sure that requirements are met and generate test reports (DVTR) * Independently finds or creates solutions to problems requiring research, resourcefulness and creativity * Understands, follows, and promotes, ZWWS policies and procedures * Review and process engineering changes in the development of water and waste systems and equipment * Review, process and recommend engineering changes in the development of W&W equipment * Utilizes sound technical problem solving to own or support ongoing and new products * Follows sound engineering principles to ensure designs meet airworthiness standards, customer requirements and ZWWS internal standards * Perform research and/or testing for new development * Present technical findings and trade studies * Assesses and creates standard work and leads or support improvement projects (group or company level) * Independently owns, or leads a team for small/medium size projects.  * Able to review, check and approve work done by peers and lower level engineers. * Provides guidance and training to lower level engineers. * Understands how various groups (engineering, industrialization, operations) work together and able to navigate through the company. * Able to interface with existing suppliers and OEM customers * May Interface with new suppliers and OEM customers Competencies * Analysis/Modeling Skills – Ability to use electrical circuit simulation tools such as PSPICE and system level simulation tools such as PSIM/MATLAB/Simulink. * Design – Experience in analog and digital control systems and applications. Superior design skills in DC-DC converter, Active Rectifiers, Gate Drives, Voltage/Current Sensor Circuit designs, EMI filter designs. * Hands on experience – Using design/simulation tools such as Altium/OrCAD, MATLAB/Simulink, PSIM, PSPICE etc. and test  equipment such as programmable power supplies, high speed digital oscilloscopes, logic analyzers etc. * Protocols –  Design level understanding of communication protocols such as CAN, ARINC, SPI,  RS-232 etc., * Standards – Experience in applying aerospace regulations such as RTCA/DO-160 and RTCA/DO-254 guidelines to electronics designs * Knowledge in major aerospace OEM electronics design guidelines * Design & develop instrumentation capabilities for product electrical parameter characterization and validation * Interpersonal Skills – Possess a strong work ethic, and commitment to excellence. Ability to communicate, ability to work in a team environment.  Ability to provide leadership to other members of the engineering team  Qualifications * Bachelor's Degree in electrical engineering from a recognized ABET accredited institution or equivalent * 5 + years of electronics experience with a desire for mixed signal design experience * Physical Demands – While performing the duties of this Job, the employee is regularly required to move around the office. * Travel – Periodical travel is minimal and may be 5-10 days per quarter. Salary Range: $125,000-$145,000/K The actual salary offered is dependent on various factors including, but not limited to, location, the candidate’s combination of job-related knowledge, qualifications, skills, education, training, and experience  All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, age, genetic information, or pregnancy. Please beware of job seeker scams and see this important notice on our careers page for more information about our recruiting process. Compliance Notice: Alten USA is a federal contractor subject to the requirements of the Vietnam Era Veterans’ Readjustment Assistance Act (VEVRAA) and Executive Order 11246. We are an Equal Opportunity Employer and consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status. Drug Screening Requirement: As a federal contractor, Alten USA maintains a drug-free workplace. All candidates selected for employment will be required to successfully complete a pre-employment drug screening as a condition of hire.